Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2069541791', 'doi': 'https://doi.org/10.1039/c3cc44059a', 'title': 'Organocatalyzed asymmetric vinylogous Michael addition of α,β-unsaturated γ-butyrolactam', 'display_name': 'Organocatalyzed asymmetric vinylogous Michael addition of α,β-unsaturated γ-butyrolactam', 'publication_year': 2013, 'publication_date': '2013-01-01', 'ids': {'openalex': 'https://openalex.org/W2069541791', 'doi': 'https://doi.org/10.1039/c3cc44059a', 'mag': '2069541791', 'pmid': 'https://pubmed.ncbi.nlm.nih.gov/24000339'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1039/c3cc44059a', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S152760256', 'display_name': 'Chemical Communications', 'issn_l': '1359-7345', 'issn': ['1359-7345', '1364-548X'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320556', 'host_organization_name': 'Royal Society of Chemistry', 'host_organization_lineage': ['https://openalex.org/P4310320556'], 'host_organization_lineage_names': ['Royal Society of Chemistry'], '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/A5042376958', 'display_name': 'Jinlong Zhang', 'orcid': 'https://orcid.org/0000-0002-1031-5183'}, 'institutions': [{'id': 'https://openalex.org/I76214153', 'display_name': 'Lanzhou University', 'ror': 'https://ror.org/01mkqqe32', 'country_code': 'CN', 'type': 'education', 'lineage': ['https://openalex.org/I76214153']}], 'countries': ['CN'], 'is_corresponding': False, 'raw_author_name': 'Jinlong Zhang', 'raw_affiliation_strings': ['Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China'], 'affiliations': [{'raw_affiliation_string': 'Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China', 'institution_ids': ['https://openalex.org/I76214153']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5034363091', 'display_name': 'Xihong Liu', 'orcid': 'https://orcid.org/0000-0002-9695-5631'}, 'institutions': [{'id': 'https://openalex.org/I76214153', 'display_name': 'Lanzhou University', 'ror': 'https://ror.org/01mkqqe32', 'country_code': 'CN', 'type': 'education', 'lineage': ['https://openalex.org/I76214153']}], 'countries': ['CN'], 'is_corresponding': False, 'raw_author_name': 'Xihong Liu', 'raw_affiliation_strings': ['Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China'], 'affiliations': [{'raw_affiliation_string': 'Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China', 'institution_ids': ['https://openalex.org/I76214153']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5076484241', 'display_name': 'Xiaojuan Ma', 'orcid': 'https://orcid.org/0000-0001-5927-2658'}, 'institutions': [{'id': 'https://openalex.org/I76214153', 'display_name': 'Lanzhou University', 'ror': 'https://ror.org/01mkqqe32', 'country_code': 'CN', 'type': 'education', 'lineage': ['https://openalex.org/I76214153']}], 'countries': ['CN'], 'is_corresponding': False, 'raw_author_name': 'Xiaojuan Ma', 'raw_affiliation_strings': ['Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China'], 'affiliations': [{'raw_affiliation_string': 'Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China', 'institution_ids': ['https://openalex.org/I76214153']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5100431254', 'display_name': 'Rui Wang', 'orcid': 'https://orcid.org/0000-0002-4719-9921'}, 'institutions': [{'id': 'https://openalex.org/I76214153', 'display_name': 'Lanzhou University', 'ror': 'https://ror.org/01mkqqe32', 'country_code': 'CN', 'type': 'education', 'lineage': ['https://openalex.org/I76214153']}], 'countries': ['CN'], 'is_corresponding': False, 'raw_author_name': 'Rui Wang', 'raw_affiliation_strings': ['Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China'], 'affiliations': [{'raw_affiliation_string': 'Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China', 'institution_ids': ['https://openalex.org/I76214153']}]}], 'institution_assertions': [], 'countries_distinct_count': 1, 'institutions_distinct_count': 1, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': None, 'apc_paid': None, 'fwci': 6.105, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 86, 'citation_normalized_percentile': {'value': 0.99996, 'is_in_top_1_percent': True, 'is_in_top_10_percent': True}, 'cited_by_percentile_year': {'min': 97, 'max': 98}, 'biblio': {'volume': '49', 'issue': '81', 'first_page': '9329', 'last_page': '9329'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10013', 'display_name': 'Asymmetric Catalysis', '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/T10013', 'display_name': 'Asymmetric Catalysis', '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/T11549', 'display_name': 'Olefin Metathesis Chemistry', 'score': 0.9991, '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/T13124', 'display_name': 'Chemistry and Pharmacology of Amaryllidaceae Alkaloids', 'score': 0.9989, '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/squaramide', 'display_name': 'Squaramide', 'score': 0.9814059}, {'id': 'https://openalex.org/keywords/michael-reaction', 'display_name': 'Michael reaction', 'score': 0.8934895}, {'id': 'https://openalex.org/keywords/asymmetric-synthesis', 'display_name': 'Asymmetric Synthesis', 'score': 0.530608}, {'id': 'https://openalex.org/keywords/organocatalysis', 'display_name': 'Organocatalysis', 'score': 0.522074}], 'concepts': [{'id': 'https://openalex.org/C2776700668', 'wikidata': 'https://www.wikidata.org/wiki/Q7581974', 'display_name': 'Squaramide', 'level': 5, 'score': 0.9814059}, {'id': 'https://openalex.org/C112423150', 'wikidata': 'https://www.wikidata.org/wiki/Q642233', 'display_name': 'Michael reaction', 'level': 3, 'score': 0.8934895}, {'id': 'https://openalex.org/C185592680', 'wikidata': 'https://www.wikidata.org/wiki/Q2329', 'display_name': 'Chemistry', 'level': 0, 'score': 0.69186485}, {'id': 'https://openalex.org/C66972969', 'wikidata': 'https://www.wikidata.org/wiki/Q898995', 'display_name': 'Organocatalysis', 'level': 4, 'score': 0.5358329}, {'id': 'https://openalex.org/C2780639532', 'wikidata': 'https://www.wikidata.org/wiki/Q7041427', 'display_name': 'Nitro', 'level': 3, 'score': 0.43556646}, {'id': 'https://openalex.org/C178790620', 'wikidata': 'https://www.wikidata.org/wiki/Q11351', 'display_name': 'Organic chemistry', 'level': 1, 'score': 0.40740868}, {'id': 'https://openalex.org/C146686406', 'wikidata': 'https://www.wikidata.org/wiki/Q898628', 'display_name': 'Enantioselective synthesis', 'level': 3, 'score': 0.36939353}, {'id': 'https://openalex.org/C161790260', 'wikidata': 'https://www.wikidata.org/wiki/Q82264', 'display_name': 'Catalysis', 'level': 2, 'score': 0.2688353}, {'id': 'https://openalex.org/C2780263894', 'wikidata': 'https://www.wikidata.org/wiki/Q335268', 'display_name': 'Alkyl', 'level': 2, 'score': 0.0}], 'mesh': [{'descriptor_ui': 'D007769', 'descriptor_name': 'Lactams', 'qualifier_ui': 'Q000737', 'qualifier_name': 'chemistry', 'is_major_topic': True}, {'descriptor_ui': 'D000577', 'descriptor_name': 'Amides', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D000577', 'descriptor_name': 'Amides', 'qualifier_ui': 'Q000737', 'qualifier_name': 'chemistry', 'is_major_topic': False}, {'descriptor_ui': 'D002384', 'descriptor_name': 'Catalysis', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D018360', 'descriptor_name': 'Crystallography, X-Ray', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D007555', 'descriptor_name': 'Isoxazoles', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D007555', 'descriptor_name': 'Isoxazoles', 'qualifier_ui': 'Q000737', 'qualifier_name': 'chemistry', 'is_major_topic': False}, {'descriptor_ui': 'D007659', 'descriptor_name': 'Ketones', 'qualifier_ui': 'Q000737', 'qualifier_name': 'chemistry', 'is_major_topic': False}, {'descriptor_ui': 'D007659', 'descriptor_name': 'Ketones', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D007769', 'descriptor_name': 'Lactams', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D008968', 'descriptor_name': 'Molecular Conformation', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D011803', 'descriptor_name': 'Quinine', 'qualifier_ui': 'Q000737', 'qualifier_name': 'chemistry', 'is_major_topic': False}, {'descriptor_ui': 'D011803', 'descriptor_name': 'Quinine', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}, {'descriptor_ui': 'D013237', 'descriptor_name': 'Stereoisomerism', 'qualifier_ui': '', 'qualifier_name': None, 'is_major_topic': False}], 'locations_count': 2, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1039/c3cc44059a', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S152760256', 'display_name': 'Chemical Communications', 'issn_l': '1359-7345', 'issn': ['1359-7345', '1364-548X'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320556', 'host_organization_name': 'Royal Society of Chemistry', 'host_organization_lineage': ['https://openalex.org/P4310320556'], 'host_organization_lineage_names': ['Royal Society of Chemistry'], '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/24000339', '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': [{'score': 0.48, 'id': 'https://metadata.un.org/sdg/14', 'display_name': 'Life below water'}], 'grants': [], 'datasets': ['https://openalex.org/W4397161360', 'https://openalex.org/W4397238477'], 'versions': [], 'referenced_works_count': 57, 'referenced_works': ['https://openalex.org/W1965449936', 'https://openalex.org/W1966240392', 'https://openalex.org/W1969352190', 'https://openalex.org/W1970687288', 'https://openalex.org/W1975526993', 'https://openalex.org/W1985260683', 'https://openalex.org/W1986107937', 'https://openalex.org/W1988053219', 'https://openalex.org/W1997203762', 'https://openalex.org/W1997255088', 'https://openalex.org/W1997766953', 'https://openalex.org/W2005619234', 'https://openalex.org/W2009277585', 'https://openalex.org/W2018441181', 'https://openalex.org/W2024050097', 'https://openalex.org/W2030314990', 'https://openalex.org/W2032044417', 'https://openalex.org/W2033246600', 'https://openalex.org/W2033760386', 'https://openalex.org/W2035491253', 'https://openalex.org/W2036221794', 'https://openalex.org/W2039638815', 'https://openalex.org/W2045718325', 'https://openalex.org/W2055930298', 'https://openalex.org/W2060443747', 'https://openalex.org/W2062590568', 'https://openalex.org/W2066769418', 'https://openalex.org/W2069384115', 'https://openalex.org/W2075711137', 'https://openalex.org/W2091542646', 'https://openalex.org/W2092718467', 'https://openalex.org/W2107035748', 'https://openalex.org/W2107936731', 'https://openalex.org/W2115871346', 'https://openalex.org/W2126012796', 'https://openalex.org/W2129114705', 'https://openalex.org/W2132477542', 'https://openalex.org/W2133124577', 'https://openalex.org/W2133930842', 'https://openalex.org/W2137821538', 'https://openalex.org/W2138098341', 'https://openalex.org/W2159438921', 'https://openalex.org/W2167061786', 'https://openalex.org/W2316719614', 'https://openalex.org/W2321820222', 'https://openalex.org/W2326724804', 'https://openalex.org/W2949157137', 'https://openalex.org/W2949769245', 'https://openalex.org/W2949808664', 'https://openalex.org/W2949987011', 'https://openalex.org/W2950394943', 'https://openalex.org/W2950850627', 'https://openalex.org/W2951018594', 'https://openalex.org/W2951293778', 'https://openalex.org/W2952840244', 'https://openalex.org/W2952871089', 'https://openalex.org/W4250996253'], 'related_works': ['https://openalex.org/W4239713345', 'https://openalex.org/W3016092402', 'https://openalex.org/W2951893013', 'https://openalex.org/W2949398055', 'https://openalex.org/W2909302493', 'https://openalex.org/W2841110989', 'https://openalex.org/W2171756248', 'https://openalex.org/W2090780669', 'https://openalex.org/W2012360919', 'https://openalex.org/W2006565722'], 'abstract_inverted_index': {'Highly': [0], 'efficient': [1], 'asymmetric': [2], 'vinylogous': [3], '1,6-Michael': [4], 'addition': [5, 13], 'of': [6], 'α,β-unsaturated': [7], 'γ-butyrolactam': [8], 'to': [9, 14, 34], '3-methyl-4-nitro-5-alkenyl-isoxazoles': [10], 'and': [11, 31, 39], 'Michael': [12], 'trichloromethyl': [15], 'ketones': [16], 'by': [17], 'using': [18], 'a': [19], 'chiral': [20], 'quinine-derived': [21], 'squaramide': [22], 'organocatalyst': [23], 'were': [24], 'described,': [25], 'giving': [26], 'products': [27], 'with': [28], 'high': [29], 'diastereo-': [30], 'enantioselectivities': [32], '(up': [33], '>25': [35], ':': [36], '1': [37], 'dr': [38], '96%': [40], 'ee).': [41]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2069541791', 'counts_by_year': [{'year': 2024, 'cited_by_count': 1}, {'year': 2023, 'cited_by_count': 3}, {'year': 2022, 'cited_by_count': 3}, {'year': 2021, 'cited_by_count': 4}, {'year': 2020, 'cited_by_count': 6}, {'year': 2019, 'cited_by_count': 9}, {'year': 2018, 'cited_by_count': 10}, {'year': 2017, 'cited_by_count': 10}, {'year': 2016, 'cited_by_count': 7}, {'year': 2015, 'cited_by_count': 19}, {'year': 2014, 'cited_by_count': 13}, {'year': 2013, 'cited_by_count': 1}], 'updated_date': '2024-09-24T04:44:02.925717', 'created_date': '2016-06-24'}