Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W3197605613', 'doi': 'https://doi.org/10.1002/anie.202108258', 'title': 'Mild Intermolecular Synthesis of a Cyclopropane‐Containing Tricyclic Skeleton: Unusual Reactivity of Isobenzopyryliums', 'display_name': 'Mild Intermolecular Synthesis of a Cyclopropane‐Containing Tricyclic Skeleton: Unusual Reactivity of Isobenzopyryliums', 'publication_year': 2021, 'publication_date': '2021-08-31', 'ids': {'openalex': 'https://openalex.org/W3197605613', 'doi': 'https://doi.org/10.1002/anie.202108258', 'mag': '3197605613', 'pmid': 'https://pubmed.ncbi.nlm.nih.gov/34342934'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1002/anie.202108258', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S67393510', 'display_name': 'Angewandte Chemie International Edition', 'issn_l': '1433-7851', 'issn': ['1433-7851', '1521-3773'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320595', 'host_organization_name': 'Wiley', 'host_organization_lineage': ['https://openalex.org/P4310320595'], 'host_organization_lineage_names': ['Wiley'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref', 'pubmed'], 'open_access': {'is_oa': False, 'oa_status': 'closed', 'oa_url': None, 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5022152256', 'display_name': 'Shuxuan Liu', 'orcid': 'https://orcid.org/0000-0002-5841-4463'}, 'institutions': [{'id': 'https://openalex.org/I4210153482', 'display_name': 'Changzhou University', 'ror': 'https://ror.org/04ymgwq66', 'country_code': 'CN', 'type': 'education', 'lineage': ['https://openalex.org/I4210153482']}], 'countries': ['CN'], 'is_corresponding': False, 'raw_author_name': 'Shuxuan Liu', 'raw_affiliation_strings': ['Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China'], 'affiliations': [{'raw_affiliation_string': 'Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China', 'institution_ids': ['https://openalex.org/I4210153482']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5056021110', 'display_name': 'Hui Qian', 'orcid': 'https://orcid.org/0000-0002-5606-9213'}, 'institutions': [{'id': 'https://openalex.org/I200769079', 'display_name': 'Hong Kong University of Science and Technology', 'ror': 'https://ror.org/00q4vv597', 'country_code': 'CN', 'type': 'education', 'lineage': ['https://openalex.org/I200769079']}, {'id': 'https://openalex.org/I889458895', 'display_name': 'University of Hong Kong', 'ror': 'https://ror.org/02zhqgq86', 'country_code': 'HK', 'type': 'education', 'lineage': ['https://openalex.org/I889458895']}], 'countries': ['CN', 'HK'], 'is_corresponding': False, 'raw_author_name': 'Hui Qian', 'raw_affiliation_strings': ['Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China'], 'affiliations': [{'raw_affiliation_string': 'Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China', 'institution_ids': ['https://openalex.org/I200769079', 'https://openalex.org/I889458895']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5100425833', 'display_name': 'Tianyu Zhang', 'orcid': 'https://orcid.org/0000-0001-5647-6014'}, 'institutions': [{'id': 'https://openalex.org/I4210153482', 'display_name': 'Changzhou University', 'ror': 'https://ror.org/04ymgwq66', 'country_code': 'CN', 'type': 'education', 'lineage': ['https://openalex.org/I4210153482']}], 'countries': ['CN'], 'is_corresponding': False, 'raw_author_name': 'Tianyu Zhang', 'raw_affiliation_strings': ['Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China'], 'affiliations': [{'raw_affiliation_string': 'Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China', 'institution_ids': ['https://openalex.org/I4210153482']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5049263897', 'display_name': 'Hongling Xie', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210153482', 'display_name': 'Changzhou University', 'ror': 'https://ror.org/04ymgwq66', 'country_code': 'CN', 'type': 'education', 'lineage': ['https://openalex.org/I4210153482']}], 'countries': ['CN'], 'is_corresponding': False, 'raw_author_name': 'Hongling Xie', 'raw_affiliation_strings': ['Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China'], 'affiliations': [{'raw_affiliation_string': 'Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China', 'institution_ids': ['https://openalex.org/I4210153482']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5043840831', 'display_name': 'Zhengyu Han', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210153482', 'display_name': 'Changzhou University', 'ror': 'https://ror.org/04ymgwq66', 'country_code': 'CN', 'type': 'education', 'lineage': ['https://openalex.org/I4210153482']}], 'countries': ['CN'], 'is_corresponding': False, 'raw_author_name': 'Zhengyu Han', 'raw_affiliation_strings': ['Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China'], 'affiliations': [{'raw_affiliation_string': 'Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China', 'institution_ids': ['https://openalex.org/I4210153482']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5078095351', 'display_name': 'Wengang Guo', 'orcid': 'https://orcid.org/0000-0001-8887-9352'}, 'institutions': [{'id': 'https://openalex.org/I4210153482', 'display_name': 'Changzhou University', 'ror': 'https://ror.org/04ymgwq66', 'country_code': 'CN', 'type': 'education', 'lineage': ['https://openalex.org/I4210153482']}], 'countries': ['CN'], 'is_corresponding': False, 'raw_author_name': 'Wengang Guo', 'raw_affiliation_strings': ['Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China'], 'affiliations': [{'raw_affiliation_string': 'Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China', 'institution_ids': ['https://openalex.org/I4210153482']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5037315684', 'display_name': 'Hongjun Zhu', 'orcid': 'https://orcid.org/0000-0002-9732-1454'}, 'institutions': [{'id': 'https://openalex.org/I4210153482', 'display_name': 'Changzhou University', 'ror': 'https://ror.org/04ymgwq66', 'country_code': 'CN', 'type': 'education', 'lineage': ['https://openalex.org/I4210153482']}], 'countries': ['CN'], 'is_corresponding': True, 'raw_author_name': 'Hai Huang', 'raw_affiliation_strings': ['Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China'], 'affiliations': [{'raw_affiliation_string': 'Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China', 'institution_ids': ['https://openalex.org/I4210153482']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5024502174', 'display_name': 'Jianwei Sun', 'orcid': 'https://orcid.org/0000-0002-2470-1077'}, 'institutions': [{'id': 'https://openalex.org/I4210153482', 'display_name': 'Changzhou University', 'ror': 'https://ror.org/04ymgwq66', 'country_code': 'CN', 'type': 'education', 'lineage': ['https://openalex.org/I4210153482']}, {'id': 'https://openalex.org/I200769079', 'display_name': 'Hong Kong University of Science and Technology', 'ror': 'https://ror.org/00q4vv597', 'country_code': 'CN', 'type': 'education', 'lineage': ['https://openalex.org/I200769079']}, {'id': 'https://openalex.org/I889458895', 'display_name': 'University of Hong Kong', 'ror': 'https://ror.org/02zhqgq86', 'country_code': 'HK', 'type': 'education', 'lineage': ['https://openalex.org/I889458895']}], 'countries': ['CN', 'HK'], 'is_corresponding': True, 'raw_author_name': 'Jianwei Sun', 'raw_affiliation_strings': ['Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China', 'Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China'], 'affiliations': [{'raw_affiliation_string': 'Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China', 'institution_ids': ['https://openalex.org/I4210153482']}, {'raw_affiliation_string': 'Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China', 'institution_ids': ['https://openalex.org/I200769079', 'https://openalex.org/I889458895']}]}], 'countries_distinct_count': 2, 'institutions_distinct_count': 3, 'corresponding_author_ids': ['https://openalex.org/A5037315684', 'https://openalex.org/A5024502174'], 'corresponding_institution_ids': ['https://openalex.org/I4210153482', 'https://openalex.org/I4210153482', 'https://openalex.org/I200769079', 'https://openalex.org/I889458895'], 'apc_list': {'value': 5250, 'currency': 'USD', 'value_usd': 5250, 'provenance': 'doaj'}, 'apc_paid': None, 'fwci': 0.332, 'has_fulltext': False, 'cited_by_count': 3, 'citation_normalized_percentile': {'value': 0.471446, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 73, 'max': 77}, 'biblio': {'volume': '60', 'issue': '39', 'first_page': '21272', 'last_page': '21276'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T11611', 'display_name': 'Catalytic Carbene Chemistry in Organic Synthesis', 'score': 1.0, 'subfield': {'id': 'https://openalex.org/subfields/1605', 'display_name': 'Organic Chemistry'}, 'field': {'id': 'https://openalex.org/fields/16', 'display_name': 'Chemistry'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, 'topics': [{'id': 'https://openalex.org/T11611', 'display_name': 'Catalytic Carbene Chemistry in Organic Synthesis', 'score': 1.0, 'subfield': {'id': 'https://openalex.org/subfields/1605', 'display_name': 'Organic Chemistry'}, 'field': {'id': 'https://openalex.org/fields/16', 'display_name': 'Chemistry'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T10871', 'display_name': 'Gold Catalysis in Organic Synthesis', 'score': 0.9927, 'subfield': {'id': 'https://openalex.org/subfields/1605', 'display_name': 'Organic Chemistry'}, 'field': {'id': 'https://openalex.org/fields/16', 'display_name': 'Chemistry'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T10354', 'display_name': 'Transition-Metal-Catalyzed C–H Bond Functionalization', 'score': 0.9843, 'subfield': {'id': 'https://openalex.org/subfields/1605', 'display_name': 'Organic Chemistry'}, 'field': {'id': 'https://openalex.org/fields/16', 'display_name': 'Chemistry'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/cyclopropane', 'display_name': 'Cyclopropane', 'score': 0.9043705}, {'id': 'https://openalex.org/keywords/carbenoid', 'display_name': 'Carbenoid', 'score': 0.62716526}, {'id': 'https://openalex.org/keywords/cyclopropanation', 'display_name': 'Cyclopropanation', 'score': 0.556915}, {'id': 'https://openalex.org/keywords/reactivity', 'display_name': 'Reactivity (psychology)', 'score': 0.5259669}, {'id': 'https://openalex.org/keywords/brønsted–lowry-acid–base-theory', 'display_name': 'Brønsted–Lowry acid–base theory', 'score': 0.46727383}], 'concepts': [{'id': 'https://openalex.org/C2779200411', 'wikidata': 'https://www.wikidata.org/wiki/Q80250', 'display_name': 'Cyclopropane', 'level': 3, 'score': 0.9043705}, {'id': 'https://openalex.org/C59759590', 'wikidata': 'https://www.wikidata.org/wiki/Q2275927', 'display_name': 'Regioselectivity', 'level': 3, 'score': 0.7802705}, {'id': 'https://openalex.org/C185592680', 'wikidata': 'https://www.wikidata.org/wiki/Q2329', 'display_name': 'Chemistry', 'level': 0, 'score': 0.766357}, {'id': 'https://openalex.org/C2779664164', 'wikidata': 'https://www.wikidata.org/wiki/Q898648', 'display_name': 'Cycloaddition', 'level': 3, 'score': 0.72338504}, {'id': 'https://openalex.org/C50027330', 'wikidata': 'https://www.wikidata.org/wiki/Q908086', 'display_name': 'Electrophile', 'level': 3, 'score': 0.68673843}, {'id': 'https://openalex.org/C2776920668', 'wikidata': 'https://www.wikidata.org/wiki/Q1035476', 'display_name': 'Carbenoid', 'level': 4, 'score': 0.62716526}, {'id': 'https://openalex.org/C178907741', 'wikidata': 'https://www.wikidata.org/wiki/Q745930', 'display_name': 'Nucleophile', 'level': 3, 'score': 0.56303495}, {'id': 'https://openalex.org/C2776910235', 'wikidata': 'https://www.wikidata.org/wiki/Q18574', 'display_name': 'Reactivity (psychology)', 'level': 3, 'score': 0.5259669}, {'id': 'https://openalex.org/C21951064', 'wikidata': 'https://www.wikidata.org/wiki/Q899212', 'display_name': 'Combinatorial chemistry', 'level': 1, 'score': 0.48806322}, {'id': 'https://openalex.org/C166950319', 'wikidata': 'https://www.wikidata.org/wiki/Q245031', 'display_name': 'Intermolecular force', 'level': 3, 'score': 0.4826294}, {'id': 'https://openalex.org/C79878483', 'wikidata': 'https://www.wikidata.org/wiki/Q556036', 'display_name': 'Brønsted–Lowry acid–base theory', 'level': 3, 'score': 0.46727383}, {'id': 'https://openalex.org/C147597530', 'wikidata': 'https://www.wikidata.org/wiki/Q369472', 'display_name': 'Computational chemistry', 'level': 1, 'score': 0.3578068}, {'id': 'https://openalex.org/C71240020', 'wikidata': 'https://www.wikidata.org/wiki/Q186011', 'display_name': 'Stereochemistry', 'level': 1, 'score': 0.3240785}, {'id': 'https://openalex.org/C161790260', 'wikidata': 'https://www.wikidata.org/wiki/Q82264', 'display_name': 'Catalysis', 'level': 2, 'score': 0.30322927}, {'id': 'https://openalex.org/C2780378348', 'wikidata': 'https://www.wikidata.org/wiki/Q25351438', 'display_name': 'Ring (chemistry)', 'level': 2, 'score': 0.30100173}, {'id': 'https://openalex.org/C178790620', 'wikidata': 'https://www.wikidata.org/wiki/Q11351', 'display_name': 'Organic chemistry', 'level': 1, 'score': 0.25999004}, {'id': 'https://openalex.org/C32909587', 'wikidata': 'https://www.wikidata.org/wiki/Q11369', 'display_name': 'Molecule', 'level': 2, 'score': 0.24115011}, {'id': 'https://openalex.org/C521398313', 'wikidata': 'https://www.wikidata.org/wiki/Q1087', 'display_name': 'Rhodium', 'level': 3, 'score': 0.108543605}, {'id': 'https://openalex.org/C71924100', 'wikidata': 'https://www.wikidata.org/wiki/Q11190', 'display_name': 'Medicine', 'level': 0, 'score': 0.0}, {'id': 'https://openalex.org/C204787440', 'wikidata': 'https://www.wikidata.org/wiki/Q188504', 'display_name': 'Alternative medicine', 'level': 2, 'score': 0.0}, {'id': 'https://openalex.org/C142724271', 'wikidata': 'https://www.wikidata.org/wiki/Q7208', 'display_name': 'Pathology', 'level': 1, 'score': 0.0}], 'mesh': [], 'locations_count': 2, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1002/anie.202108258', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S67393510', 'display_name': 'Angewandte Chemie International Edition', 'issn_l': '1433-7851', 'issn': ['1433-7851', '1521-3773'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320595', 'host_organization_name': 'Wiley', 'host_organization_lineage': ['https://openalex.org/P4310320595'], 'host_organization_lineage_names': ['Wiley'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, {'is_oa': False, 'landing_page_url': 'https://pubmed.ncbi.nlm.nih.gov/34342934', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4306525036', 'display_name': 'PubMed', 'issn_l': None, 'issn': None, 'is_oa': False, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1299303238', 'host_organization_name': 'National Institutes of Health', 'host_organization_lineage': ['https://openalex.org/I1299303238'], 'host_organization_lineage_names': ['National Institutes of Health'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [], 'grants': [{'funder': 'https://openalex.org/F4320321001', 'funder_display_name': 'National Natural Science Foundation of China', 'award_id': '91956114'}, {'funder': 'https://openalex.org/F4320321001', 'funder_display_name': 'National Natural Science Foundation of China', 'award_id': '22071210'}, {'funder': 'https://openalex.org/F4320321920', 'funder_display_name': 'Innovation and Technology Commission', 'award_id': 'ITC-CNERC14SC01'}], 'datasets': ['https://openalex.org/W4397618611'], 'versions': [], 'referenced_works_count': 56, 'referenced_works': ['https://openalex.org/W1552045685', 'https://openalex.org/W1964284609', 'https://openalex.org/W1968623910', 'https://openalex.org/W1976280089', 'https://openalex.org/W1979710492', 'https://openalex.org/W1980051414', 'https://openalex.org/W1987778120', 'https://openalex.org/W2009213125', 'https://openalex.org/W2044856625', 'https://openalex.org/W2049114404', 'https://openalex.org/W2054473656', 'https://openalex.org/W2057024062', 'https://openalex.org/W2058045100', 'https://openalex.org/W2076592603', 'https://openalex.org/W2088025861', 'https://openalex.org/W2102580813', 'https://openalex.org/W2108218973', 'https://openalex.org/W2139383250', 'https://openalex.org/W2141267958', 'https://openalex.org/W2150762230', 'https://openalex.org/W2154549148', 'https://openalex.org/W2166403448', 'https://openalex.org/W2313758642', 'https://openalex.org/W2331986332', 'https://openalex.org/W2334283927', 'https://openalex.org/W2335074326', 'https://openalex.org/W2422726141', 'https://openalex.org/W2491509983', 'https://openalex.org/W2570783998', 'https://openalex.org/W2597272766', 'https://openalex.org/W2611749692', 'https://openalex.org/W2734779846', 'https://openalex.org/W2767448496', 'https://openalex.org/W2890406878', 'https://openalex.org/W2892330472', 'https://openalex.org/W2894084535', 'https://openalex.org/W2898818980', 'https://openalex.org/W2947052058', 'https://openalex.org/W2949933079', 'https://openalex.org/W2949968007', 'https://openalex.org/W2950980422', 'https://openalex.org/W2952548000', 'https://openalex.org/W2952960836', 'https://openalex.org/W2960186284', 'https://openalex.org/W2975735405', 'https://openalex.org/W2976400918', 'https://openalex.org/W3019790436', 'https://openalex.org/W3038688283', 'https://openalex.org/W3165510554', 'https://openalex.org/W4235944363', 'https://openalex.org/W4238132065', 'https://openalex.org/W4239019332', 'https://openalex.org/W4243121634', 'https://openalex.org/W4247027661', 'https://openalex.org/W4249624203', 'https://openalex.org/W4251583391'], 'related_works': ['https://openalex.org/W3048887533', 'https://openalex.org/W2952671732', 'https://openalex.org/W2952548000', 'https://openalex.org/W2949349993', 'https://openalex.org/W2037201782', 'https://openalex.org/W2013476695', 'https://openalex.org/W2005734445', 'https://openalex.org/W2001701721', 'https://openalex.org/W1984412065', 'https://openalex.org/W144716335'], 'abstract_inverted_index': {'Abstract': [0], 'Cyclopropanes': [1], 'embedded': [2], 'in': [3, 72, 95], 'a': [4, 9, 25, 109, 119], 'polycyclic': [5], 'bridged': [6], 'architecture': [7], 'are': [8, 142], 'versatile': [10, 114], 'structural': [11], 'motif,': [12], 'but': [13], 'such': [14, 33], 'complex': [15], 'frameworks': [16], 'often': [17], 'impose': [18], 'substantial': [19], 'synthetic': [20, 147], 'challenges.': [21], 'Herein': [22], 'we': [23], 'introduce': [24], 'new': [26, 110], 'approach': [27], 'for': [28, 134], 'the': [29, 45, 55, 64, 76, 83, 90, 96, 99, 113, 129], 'expedient': [30], 'access': [31], 'to': [32, 74, 128, 144], 'spring‐loaded': [34], 'strained': [35, 140], 'systems': [36], 'via': [37], 'an': [38], 'exceptionally': [39], 'mild': [40], 'intermolecular': [41], 'convergent': [42], 'process': [43, 106], 'between': [44, 89], 'readily': [46], 'available': [47], 'isobenzopyryliums': [48], 'and': [49, 79, 93, 132], 'vinyl': [50], 'boronic': [51], 'acids.': [52], 'Different': [53], 'from': [54, 98], 'typical': [56], 'conventional': [57], 'approaches,': [58], 'our': [59], 'protocol': [60], 'does': [61], 'not': [62], 'involve': [63], 'highly': [65], 'active': [66], 'carbenoid': [67], 'intermediates': [68], 'or': [69], 'strong': [70], 'conditions': [71], 'order': [73], 'overcome': [75], 'disfavored': [77], 'kinetic': [78], 'thermodynamic': [80], 'problems.': [81], 'Instead,': [82], 'key': [84], 'cyclopropane': [85], 'ring': [86], 'was': [87], 'formed': [88], 'well‐positioned': [91], 'nucleophile': [92], 'electrophile': [94], 'adduct': [97], 'regioselective': [100], '[4+2]': [101], 'cycloaddition.': [102], 'Thus,': [103], 'this': [104, 135], 'unusual': [105], 'also': [107], 'represents': [108], 'reactivity': [111], 'of': [112, 118], 'isobenzopyryliums.': [115], 'The': [116, 139], 'choice': [117], 'Brønsted': [120], 'acid': [121], 'catalyst': [122], 'with': [123], 'proper': [124], 'acidity': [125], 'is': [126], 'crucial': [127], 'high': [130], 'efficiency': [131], 'selectivity': [133], 'multiple': [136], 'bond‐forming': [137], 'process.': [138], 'products': [141], 'precursors': [143], 'other': [145], 'useful': [146], 'building': [148], 'blocks.': [149]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W3197605613', 'counts_by_year': [{'year': 2024, 'cited_by_count': 1}, {'year': 2023, 'cited_by_count': 2}], 'updated_date': '2024-09-13T16:06:32.264012', 'created_date': '2021-09-13'}