{"doi":"10.1039/p19730000471","title":"Studies on the syntheses of heterocyclic compounds. Part DII. Synthesis of 1-substituted 1,2,3,4-tetrahydrophthalazines by a pictet–spengler-type reaction of 3-hydroxybenzylhydrazine with carbonyl compounds","abstract":null,"journal":"J. Chem. Soc., Perkin Trans. 1","year":1973,"id":645807,"datarank":0.37273599746820013,"base_score":2.4849066497880004,"endowment":2.4849066497880004,"self_citation_contribution":0.37273599746820013,"citation_network_contribution":0.0,"self_endowment_contribution":0.37273599746820013,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":11,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1546804,"name":"Kazuo Kigasawa","orcid":null,"position":1,"is_corresponding":false},{"id":1546805,"name":"Mineharu Hiiragi","orcid":null,"position":2,"is_corresponding":false},{"id":1546807,"name":"Haruhide Ishimaru","orcid":null,"position":3,"is_corresponding":false},{"id":1681768,"name":"Tuneo Uryu","orcid":null,"position":4,"is_corresponding":false},{"id":1681769,"name":"Seiji Haga","orcid":null,"position":5,"is_corresponding":false},{"id":186775,"name":"Tetsuji Kametani","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"Studies on the syntheses of heterocyclic compounds. Part DII. Synthesis of 1-substituted 1,2,3,4-tetrahydrophthalazines by a pictet–spengler-type reaction of 3-hydroxybenzylhydrazine with carbonyl compounds","abstract":"Condensations of 3-hydroxybenzylhydrazine with acetone, ethyl methyl ketone, diethyl ketone, cyclohexanone, and 1-methyl-4-piperidone in the presence of acid gave the 1,1-disubstituted 1,2,3,4-tetrahydrophthalazines (2)–(6). On the other hand, the reactions of 3-hydroxybenzoylhydrazine (7) with acetone, cyclohexanone, and benzalde-hyde gave the Schiff's bases (8)–(10).","is_dataset_classified":null,"base_score":2.4849066497880004,"endowment":2.4849066497880004,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"19767382","pmcid":null,"openalex_id":"https://openalex.org/W2064397104","authors":[],"funders":[],"total_grants":0,"fwci":2.024,"citation_percentile":0.83661097,"influential_citations":0,"citation_trend":[{"year":2012,"count":1},{"year":2013,"count":1},{"year":2018,"count":1},{"year":2020,"count":1}],"oa_status":"closed","license":null,"oa_locations":[{"url":"http://pubs.rsc.org/en/content/articlepdf/1973/P1/P19730000471","host_type":"publisher"},{"url":"https://doi.org/10.1039/p19730000471","host_type":"journal"}],"fields_of_study":["Synthesis and Reactions of Organic Compounds","Synthesis and Biological Evaluation","Synthesis and Characterization of Heterocyclic Compounds"],"mesh_terms":[],"keywords":["Cyclohexanone","Acetone","Chemistry","Ketone","Organic chemistry","Methyl Ketone","Catalysis"],"sdg_mappings":[{"sdg_number":0,"sdg_label":"Clean water and sanitation"}],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-08-09T10:12:56.354123Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}