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Synthesis of Some New Derivatives of Thiazolo[4,3-b]- and Thiazolo[2,3-b] quinazolone

โœ Scribed by Hamed A. Daboun; Mahfouz A. Abdel Aziz


Publisher
John Wiley and Sons
Year
1983
Tongue
English
Weight
304 KB
Volume
316
Category
Article
ISSN
0365-6233

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โœฆ Synopsis


A.R. Egypt Eingegangen am 30. Man 1982 The new 5H-thiazolo[4,3-b]quinazoline-3,5(lH)-diones 3, ~II-C, 5a-c and 5H-thiazolo[2,3-b]quinazoline-3,5(2H)-diones 9ac, 11were prepared by reaction of anthranilic acid with the 2-thiazolidinone-4-thione derivatives lb, h, 7a-c and the 5-substituted 2-(alkylmercapto)-2-thiazolin-4-ones 8a-c, l h -c , respectively. Darstellung verschiedener neuec Thirzolo[4,3-b]and 'Zbinzolo[2,3-b]~olon-Derivate Die neuen 5H-Thiazolo[4,3-b]chinazolin-3,5(lH)-dione 3, 4n-q 5a-c und 5H-Thiazolo[2,3-b]chinazolin-3,5(2H)-dione !kc, 11werden durch Umsetzung von Anthranilsaure mit den 2-Thiazolidinon-4-thion-Derivaten lb, 6a-c, 7a-c und den 5-substituierten 2-Alkylmercapto-2-thiazolin-4-onen 8-, 10synthetisiert.


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4b) (2 g, 63 %); this has m.p. and mixed m.p. 275-277 "C (cf. [TI).