Transformations of 4-hydroxy-5,6,7,8-tetrafluorocoumarin derivatives with monoamines / Shcherbakov Konstantin V.,Burgart Yanina V.,Saloutin Victor I.,Chupakhin Oleg N. // HETEROCYCLES. - 2006. - V. 69, l. 1. - P. 319+.

ISSN/EISSN:

0385-5414 / нет данных

Type:

Article

Abstract:

The 4-hydroxy-5,6,7,8-tetrafluorocoumarin reacts with the monoamines to form salts under the mild conditions or the 4-alkyl(aryl)aminocoumarins on refluxing in o-xylene. The 3-acetyl-4-hydroxy5,6,7,8-tetrafluorocoumarin reacts with the strong basic amines in the polar solvents to give salts that can be transformed into the 3-alkylaminoethylidene-5,6,7,8-tetrafluorobenzopyran-2,4-diones. The latter can be obtained by reaction of the 3-acetylcoumarin with different amines. The reactions of the 3-acety1coumarin with the strong basic amines in dimethyl sulfoxide lead to the 7-alkylamino-3-alkylaminoethylidene-5,6,8-triflurobenzopyrandiones. The 3-acetimidoyl-4-hydroxy-5,6,7,8-tetrafluorocournarin affords the 3-alkylaminoethylidenebenzopyrandiones with the monoamines, but in dimethyl sulfoxide the 7-substituted 3-acetimidoyl5,6,8-trifluorobenzopyrandiones or the 7-alkylamino-3-alkylaminoethylidene5,6,8-triflurobenzopyrandiones can be obtained.

Author keywords:

4-hydroxycoumarin; fluorinated; substitution; condensation; amine

DOI:

нет данных

Web of Science ID:

ISI:000243651000031

Соавторы в МНС:

Другие поля

Поле	Значение
Month	DEC 1
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Address	THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Language	English
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
Number-of-Cited-References	5
Journal-ISO	Heterocycles
Doc-Delivery-Number	128II