Synthesis and reactions of furocondensed systems containing indole skeleton

Autor:	Anna Koreňová, Miloslava Dandárová, Jaroslav Kováč, Alžbeta Krutošíková
Rok vydání:	1984
Předmět:	Indole test chemistry.chemical_classification chemistry.chemical_compound Polycyclic compound chemistry Stereochemistry Hydrazine General Chemistry
Zdroj:	Collection of Czechoslovak Chemical Communications. 49:1529-1535
ISSN:	1212-6950 0010-0765
Popis:	The new 1,2,4-triazolo[3''', 4''':6'', 1'']-1,2,4-triazino[4'', 5'':4,5]furo[3,2-b]indoles V and 1-acetyl-9H-pyrrolo[2',3':4,5]furo[3,2-b]indole (IX) were prepared from 1,9-dihydropyrrolo[2',3':4,5]furo[3,2-b]indole-2-carboxhydrazide I and 2-(2-nitrophenyl)-4H-furo[3,2-b]pyrrole-5-carboxylic acid, respectively. Compound I gave with triethyl orthoformate or with triethyl orthoacetate 1,2-dihydro-1,2,4-triazino[4'',5'':1',5']pyrrolo[2',3':4,5]furo[3,2-b]indol-1-one or its methyl analogue II. Substances II afforded with phosphorus pentasulfide thiones III reacting with hydrazine to furnish IV. Cyclization of the latter with triethylorthoformate or orthoacetate led to V. Compounds II and III can also be obtained by a deoxygenative cyclization of VI and VII with triethyl phosphite.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::21b4a7242eed02bfde7b86459656eaea https://doi.org/10.1135/cccc19841529 Zobrazit plný text záznamu