TRANSFORMATIONS OF 3-(1-AMINOETHYLIDENE)-5,6,7,8-TETRAFLUOROBENZOPYRAN-2,4-DIONE WITH HYDRAZINES / Shcherbakov Konstantin V.,Burgart Yanina V.,Saloutin Victor I. // HETEROCYCLES. - 2009. - V. 78, l. 2. - P. 347-356.

ISSN/EISSN:

0385-5414 / нет данных

Type:

Article

Abstract:

3-(1-Aminoethylidene)-5,6,7,8-tetrafluorobenzopyran-2,4-dione reacts with the substituted hydrazines depending on hydrazine nucleophilicity and the reaction conditions. 3-R-hydrazinoethylidene-5,6,7,8-tetrafluorobenzopyrandiones are formed as a result of the transamination at aminoethylidene fragment by hydrazine NH(2)-group. In the case of methylhydrazine and hydrazine the transamination can be accompanied by the substitution of fluorine atom at the atom C-7. Benzopyrano{[}2,3-c]pyrazolone derivatives are produced due to the intramolecular addition of the RNH-group at the C-2 atom followed by the intramolecular substitution of fluorine atom by hydroxyl group.

Author keywords:

3-(1-Aminoethylidene)-5,6,7,8-tetrafluorobenzopyran-2,4,-dione Fluorinated; Recyclization; Substitution; Hydrazine DERIVATIVES; 3-ACYL-4-HYDROXYCOUMARINS; CYCLIZATION

DOI:

10.3987/COM-08-11495

Web of Science ID:

ISI:000263714400006

Соавторы в МНС:

Другие поля

Поле	Значение
Month	FEB 1
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Address	THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Language	English
Keywords-Plus	DERIVATIVES; 3-ACYL-4-HYDROXYCOUMARINS; CYCLIZATION
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Organic
Author-Email	saloutin@ios.uran.ru
ResearcherID-Numbers	Burgart, Yanina/T-8025-2017
ORCID-Numbers	Burgart, Yanina/0000-0001-6061-2410
Funding-Acknowledgement	Russian Federation {[}3758.2008.3]
Funding-Text	This work was supported by the State Programme for supporting leading scientific schools of Russian Federation (grant 3758.2008.3).
Number-of-Cited-References	16
Journal-ISO	Heterocycles
Doc-Delivery-Number	412GY