Derivatives of 4-hydroxy-5,6,7,8-tetrafluorocoumarin in reactions with o-aminothiophenol / Bazyl' IT,Kisil' SP,Burgart YV,Saloutin VI // RUSSIAN JOURNAL OF ORGANIC CHEMISTRY. - 2000. - V. 36, l. 6. - P. 904-909.

ISSN/EISSN:

1070-4280 / нет данных

Type:

Article

Abstract:

The derivatives of 4-hydroxy-5,6,7,8-tetrafluorocoumarin in reactions with o-aminothiophenol yield products of S-substitution at C-7 atom, 7-substituted 5,6,8-trifluorocoumarins afford benzothiazoles as a result of cleavage of the pyrone cycle, 2-methyl-3-ethoxycarbonyl-5,6,7,8-tetrafluorochromone undergoes acidic cleavage to 2-(2-hydroxy-3,4,5,6-tetrafluorophenyl)benzothiazole. S-substituted coumarins in alkaline media suffer decomposition to acetophenone. In acidic media 3-iminoacetyl-4-hydroxy-5,6,8-trifluoro-7-(2-aminophenylthio)coumarin affords 2-methyl-5,6,8-trifluoro-7-(2-aminophenylthio)chromone. In condensation of 4-hydroxy-5,6,8-trifluoro-7-(2-aminophenylthio)coumarin in the presence of NaH was isolated 4-hydroxy-5,6-difluoro-2H-pyrano{[}6,5-a]phenothiazin2-one.

Author keywords:

N-NUCLEOPHILES

DOI:

10.1007/BF02757453

Web of Science ID:

ISI:000166138500027

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JUN
Publisher	MAIK NAUKA/INTERPERIODICA
Address	C/O KLUWER ACADEMIC-PLENUM PUBLISHERS, 233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	N-NUCLEOPHILES
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Organic
ResearcherID-Numbers	Burgart, Yanina/T-8025-2017
ORCID-Numbers	Burgart, Yanina/0000-0001-6061-2410
Number-of-Cited-References	10
Usage-Count-Since-2013	1
Journal-ISO	Russ. J. Organ. Chem.
Doc-Delivery-Number	387TT