Synthesis Of Novel 5-Methylindeno[2,1E][1,3]Thiazolo[3,2-A]Pyrimidine-1,6(2H,10bH)-Diones
摘要:
Treatment of ethyl 5-aryl-7-methyl-3-oxo-2,3-dihydro-5H-thiazolo[3,2-a]pyrimidine-6-carboxylic acid ethyl ester 1(a-h), with aluminum chloride and acetyl chloride in nitrobenzene gave the corresponding 5-Methylindeno[2,1-e][1,3]thiazolo[3,2-a]pyrimidine-1,6(2H,10bH)-dione derivatives 2(a-h). Yields of the products, after recrystallizing with acetic acid, were of the order of 46-67%. H-1-NMR and C-13-NMR spectroscopy, and elemental analysis were used for identification of these compounds.
An Efficient Synthesis of Some Novel Bicyclic Thiazolopyrimidine Derivatives
作者:Akbar Mobinikhaledi、Mojgan Zendehdel、Mahdia Hamidi Nasab、Mohammad Ali Bodaghi Fard
DOI:10.1515/hc.2009.15.6.451
日期:2009.1
An efficient and rapid synthesis of some thiazolopyrimidine derivatives from pyrimidinthiones and chloroacetyl chloride in refluxing tetrahydrofurane (THF) is described. The method is simple and practical, and generating thiazole derivatives in good isolated yields.