Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2951197852', 'doi': 'https://doi.org/10.3987/com-94-6999', 'title': 'Diels-Alder Reactions of a Hydrazonocrotonate with Bromonaphthoquinones', 'display_name': 'Diels-Alder Reactions of a Hydrazonocrotonate with Bromonaphthoquinones', 'publication_year': 1995, 'publication_date': '1995-01-01', 'ids': {'openalex': 'https://openalex.org/W2951197852', 'doi': 'https://doi.org/10.3987/com-94-6999', 'mag': '2951197852'}, 'language': 'en', 'primary_location': {'is_oa': True, 'landing_page_url': 'https://doi.org/10.3987/com-94-6999', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S27298842', 'display_name': 'Heterocycles', 'issn_l': '0385-5414', 'issn': ['0385-5414', '1881-0942'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320990', 'host_organization_name': 'Elsevier BV', 'host_organization_lineage': ['https://openalex.org/P4310320990'], 'host_organization_lineage_names': ['Elsevier BV'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref'], 'open_access': {'is_oa': True, 'oa_status': 'gold', 'oa_url': 'https://doi.org/10.3987/com-94-6999', 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5010363069', 'display_name': 'Houda Fillion', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210144972', 'display_name': 'Laboratoire de Chimie Organique', 'ror': 'https://ror.org/04db3be62', 'country_code': 'FR', 'type': 'facility', 'lineage': ['https://openalex.org/I190752583', 'https://openalex.org/I2746051580', 'https://openalex.org/I4210144972', 'https://openalex.org/I98910050']}, {'id': 'https://openalex.org/I100532134', 'display_name': 'Université Claude Bernard Lyon 1', 'ror': 'https://ror.org/029brtt94', 'country_code': 'FR', 'type': 'education', 'lineage': ['https://openalex.org/I100532134', 'https://openalex.org/I203339264']}], 'countries': ['FR'], 'is_corresponding': False, 'raw_author_name': 'Houda Fillion', 'raw_affiliation_strings': ['Laboratoire de Chimie Organique, Instihlt &s Sciences Pharmaceutiques et Biologiques. Universit6 Claude Bernard, 8 avenue Rockefeller, 69373 Lyon Cedex 08, France'], 'affiliations': [{'raw_affiliation_string': 'Laboratoire de Chimie Organique, Instihlt &s Sciences Pharmaceutiques et Biologiques. Universit6 Claude Bernard, 8 avenue Rockefeller, 69373 Lyon Cedex 08, France', 'institution_ids': ['https://openalex.org/I4210144972', 'https://openalex.org/I100532134']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5020506749', 'display_name': 'Leila Chaker', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210144972', 'display_name': 'Laboratoire de Chimie Organique', 'ror': 'https://ror.org/04db3be62', 'country_code': 'FR', 'type': 'facility', 'lineage': ['https://openalex.org/I190752583', 'https://openalex.org/I2746051580', 'https://openalex.org/I4210144972', 'https://openalex.org/I98910050']}, {'id': 'https://openalex.org/I100532134', 'display_name': 'Université Claude Bernard Lyon 1', 'ror': 'https://ror.org/029brtt94', 'country_code': 'FR', 'type': 'education', 'lineage': ['https://openalex.org/I100532134', 'https://openalex.org/I203339264']}], 'countries': ['FR'], 'is_corresponding': False, 'raw_author_name': 'Leila Chaker', 'raw_affiliation_strings': ['Laboratoire de Chimie Organique, Instihlt &s Sciences Pharmaceutiques et Biologiques. Universit6 Claude Bernard, 8 avenue Rockefeller, 69373 Lyon Cedex 08, France'], 'affiliations': [{'raw_affiliation_string': 'Laboratoire de Chimie Organique, Instihlt &s Sciences Pharmaceutiques et Biologiques. Universit6 Claude Bernard, 8 avenue Rockefeller, 69373 Lyon Cedex 08, France', 'institution_ids': ['https://openalex.org/I4210144972', 'https://openalex.org/I100532134']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5111871781', 'display_name': 'Félix Pautet', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I4210144972', 'display_name': 'Laboratoire de Chimie Organique', 'ror': 'https://ror.org/04db3be62', 'country_code': 'FR', 'type': 'facility', 'lineage': ['https://openalex.org/I190752583', 'https://openalex.org/I2746051580', 'https://openalex.org/I4210144972', 'https://openalex.org/I98910050']}, {'id': 'https://openalex.org/I100532134', 'display_name': 'Université Claude Bernard Lyon 1', 'ror': 'https://ror.org/029brtt94', 'country_code': 'FR', 'type': 'education', 'lineage': ['https://openalex.org/I100532134', 'https://openalex.org/I203339264']}], 'countries': ['FR'], 'is_corresponding': False, 'raw_author_name': 'Félix Pautet', 'raw_affiliation_strings': ['Laboratoire de Chimie Organique, Instihlt &s Sciences Pharmaceutiques et Biologiques. Universit6 Claude Bernard, 8 avenue Rockefeller, 69373 Lyon Cedex 08, France'], 'affiliations': [{'raw_affiliation_string': 'Laboratoire de Chimie Organique, Instihlt &s Sciences Pharmaceutiques et Biologiques. Universit6 Claude Bernard, 8 avenue Rockefeller, 69373 Lyon Cedex 08, France', 'institution_ids': ['https://openalex.org/I4210144972', 'https://openalex.org/I100532134']}]}], 'institution_assertions': [], 'countries_distinct_count': 1, 'institutions_distinct_count': 2, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': None, 'apc_paid': None, 'fwci': 1.898, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 19, 'citation_normalized_percentile': {'value': 0.69863, 'is_in_top_1_percent': False, 'is_in_top_10_percent': False}, 'cited_by_percentile_year': {'min': 83, 'max': 84}, 'biblio': {'volume': '41', 'issue': '6', 'first_page': '1169', 'last_page': '1169'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T12356', 'display_name': 'Bioactive Compounds and Antitumor Agents', 'score': 0.9958, 'subfield': {'id': 'https://openalex.org/subfields/3005', 'display_name': 'Toxicology'}, 'field': {'id': 'https://openalex.org/fields/30', 'display_name': 'Pharmacology, Toxicology and Pharmaceutics'}, 'domain': {'id': 'https://openalex.org/domains/1', 'display_name': 'Life Sciences'}}, 'topics': [{'id': 'https://openalex.org/T12356', 'display_name': 'Bioactive Compounds and Antitumor Agents', 'score': 0.9958, 'subfield': {'id': 'https://openalex.org/subfields/3005', 'display_name': 'Toxicology'}, 'field': {'id': 'https://openalex.org/fields/30', 'display_name': 'Pharmacology, Toxicology and Pharmaceutics'}, 'domain': {'id': 'https://openalex.org/domains/1', 'display_name': 'Life Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/diels–alder-reaction', 'display_name': 'Diels–Alder reaction', 'score': 0.6534811}, {'id': 'https://openalex.org/keywords/reactivity', 'display_name': 'Reactivity', 'score': 0.5021465}, {'id': 'https://openalex.org/keywords/crotonaldehyde', 'display_name': 'Crotonaldehyde', 'score': 0.4641069}], 'concepts': [{'id': 'https://openalex.org/C185592680', 'wikidata': 'https://www.wikidata.org/wiki/Q2329', 'display_name': 'Chemistry', 'level': 0, 'score': 0.9260297}, {'id': 'https://openalex.org/C59759590', 'wikidata': 'https://www.wikidata.org/wiki/Q2275927', 'display_name': 'Regioselectivity', 'level': 3, 'score': 0.79803616}, {'id': 'https://openalex.org/C2779940776', 'wikidata': 'https://www.wikidata.org/wiki/Q375669', 'display_name': 'Diels–Alder reaction', 'level': 3, 'score': 0.6534811}, {'id': 'https://openalex.org/C2780378348', 'wikidata': 'https://www.wikidata.org/wiki/Q25351438', 'display_name': 'Ring (chemistry)', 'level': 2, 'score': 0.5640485}, {'id': 'https://openalex.org/C71240020', 'wikidata': 'https://www.wikidata.org/wiki/Q186011', 'display_name': 'Stereochemistry', 'level': 1, 'score': 0.5215011}, {'id': 'https://openalex.org/C2780643102', 'wikidata': 'https://www.wikidata.org/wiki/Q412382', 'display_name': 'Quinone', 'level': 2, 'score': 0.5078533}, {'id': 'https://openalex.org/C2776910235', 'wikidata': 'https://www.wikidata.org/wiki/Q18574', 'display_name': 'Reactivity (psychology)', 'level': 3, 'score': 0.5021465}, {'id': 'https://openalex.org/C2775910738', 'wikidata': 'https://www.wikidata.org/wiki/Q60193372', 'display_name': 'Crotonaldehyde', 'level': 3, 'score': 0.4641069}, {'id': 'https://openalex.org/C155647269', 'wikidata': 'https://www.wikidata.org/wiki/Q243455', 'display_name': 'Medicinal chemistry', 'level': 1, 'score': 0.33263195}, {'id': 'https://openalex.org/C178790620', 'wikidata': 'https://www.wikidata.org/wiki/Q11351', 'display_name': 'Organic chemistry', 'level': 1, 'score': 0.27284247}, {'id': 'https://openalex.org/C161790260', 'wikidata': 'https://www.wikidata.org/wiki/Q82264', 'display_name': 'Catalysis', 'level': 2, 'score': 0.10442552}, {'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': 1, 'locations': [{'is_oa': True, 'landing_page_url': 'https://doi.org/10.3987/com-94-6999', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S27298842', 'display_name': 'Heterocycles', 'issn_l': '0385-5414', 'issn': ['0385-5414', '1881-0942'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320990', 'host_organization_name': 'Elsevier BV', 'host_organization_lineage': ['https://openalex.org/P4310320990'], 'host_organization_lineage_names': ['Elsevier BV'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}], 'best_oa_location': {'is_oa': True, 'landing_page_url': 'https://doi.org/10.3987/com-94-6999', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S27298842', 'display_name': 'Heterocycles', 'issn_l': '0385-5414', 'issn': ['0385-5414', '1881-0942'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310320990', 'host_organization_name': 'Elsevier BV', 'host_organization_lineage': ['https://openalex.org/P4310320990'], 'host_organization_lineage_names': ['Elsevier BV'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': 'publishedVersion', 'is_accepted': True, 'is_published': True}, 'sustainable_development_goals': [], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 0, 'referenced_works': [], 'related_works': ['https://openalex.org/W2902224843', 'https://openalex.org/W2611701588', 'https://openalex.org/W2163956028', 'https://openalex.org/W2158829507', 'https://openalex.org/W2087700828', 'https://openalex.org/W2071446468', 'https://openalex.org/W2059211520', 'https://openalex.org/W1996200739', 'https://openalex.org/W196931172', 'https://openalex.org/W149996958'], 'abstract_inverted_index': {'a': [0, 14, 98, 136], '-An': [1], 'efficient': [2], 'and': [3, 24, 29, 73, 89, 109, 123], 'regiospecific': [4], 'synthesis': [5, 92], 'of': [6, 49, 57, 65, 151, 159], '4.6-and': [7], '4,9disubstituted': [8], '5.10-benzo[g]quinolinquinone': [9], 'derivatives': [10], 'was': [11], 'performed': [12], 'through': [13], 'hetero': [15, 99, 167], 'Diels-Alder': [16, 100, 168], 'reaction': [17, 101], 'between': [18, 102], 'methyl': [19, 152], '(Ej-4': [20], '1': [21], 'dimethylhydrazono-2-butenoate': [22], '(1)': [23], '2-or': [25], '3-bromo-5-substitued': [26], 'naphthcquinones': [27, 155], '(2)': [28], '(3).According': [30], 'to': [31, 129, 147], 'the': [32, 36, 45, 50, 55, 58, 66, 76, 95, 111, 149, 189], 'experimental': [33], 'conditions': [34], 'used,': [35], 'corresponding': [37], 'dihydro': [38], 'or': [39, 63, 105, 142], 'aromatic': [40, 68], 'compounds': [41], 'were': [42, 85, 116], 'isolated': [43], 'as': [44, 71], 'major': [46], 'products.The': [47], 'regiochemistry': [48], 'cycloadditions': [51], 'is': [52], 'governed': [53], 'by': [54, 183], 'position': [56], 'bromine': [59], 'atom': [60], 'at': [61, 181], 'C-2': [62], 'C-3': [64, 182], 'quinone.Polycyclic': [67], 'alkaloids': [69], 'such': [70], 'sampanginel': [72], 'eupomatidines2': [74], 'possess': [75], 'naphthonaphthy~idin-7one': [77], 'skeleton': [78], '(I).Furthermore,': [79], 'several': [80, 114], 'A-and': [81], 'B-ring': [82], 'substituted': [83], 'sampangines': [84], 'described': [86], 'for': [87, 118, 135], 'antifungal': [88, 141], 'antimycobacterial': [90], 'activitie~.~Their': [91], 'involves': [93], 'in': [94, 166], 'key': [96], 'step': [97], 'crotonaldehyde': [103], 'N,N-dimethylhydrazone': [104], 'its': [106], 'Cmethoxyl': [107], 'derivative': [108], '2-br~mona~hthoquinone.~~~On': [110], 'other': [112], 'hand,': [113], 'pyridazinones': [115], 'known': [117], 'their': [119], 'pharmacological': [120], 'propert~es.5~mongthem,': [121], 'antimitotics': [122], 'cardiotonica': [124], 'activities': [125], 'seem': [126], 'attractive.In': [127], 'order': [128], 'obtain': [130], 'Dring': [131], 'functionalized': [132], 'pyridazinoneazaanthrones': [133], '(11)': [134], 'structure-activity': [137], 'relationship': [138], 'study': [139], 'on': [140], 'antitumor': [143], 'properties,': [144], 'we': [145], 'plan': [146], 'investigate': [148], 'reactivity': [150], '(E)-4-dimethylhybno-2-butenoate': [153], 'towards': [154, 170], '(Scheme': [156], '1).The': [157], 'usefulness': [158], 'a,b-unsaturated': [160], 'N,N-dimethylhybnes': [161], 'has': [162], 'been': [163], 'well': [164], 'exploited': [165], 'reactions': [169], 'q': [171], '~i': [172], 'n': [173, 175], 'o': [174], 'e': [176], 's': [177], '.~-~': [178], 'A': [179], 'substitution': [180], 'an': [184], 'electron': [185], 'releasing': [186], 'goup': [187], 'facilitated': [188]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2951197852', 'counts_by_year': [{'year': 2018, 'cited_by_count': 1}], 'updated_date': '2024-12-27T17:47:03.445358', 'created_date': '2019-06-27'}