2,4-DIAMINO-1-THIA-3-AZABUTADIENES, INTERMEDIATES IN HETEROCYCLIC SYNTHESIS
作者:C. Friot、A. Reliquet、F. Reliquet、J. C. Meslin
DOI:10.1080/10426500008044998
日期:2000.1
Abstract 2,4-Diamino-1-thia-3-azabutadienes 1 were studied. Methylation occured at sulfur and acylation at nitrogen bound to the 2 position. Alkylation by α-bromoketones gave rise to 2-amino-5-acylthiazoles. Upon treatment with acrylic dienophiles compounds 1 reacted either as diazadiene or as thiazadiene yielding tetrahydropyrimidinethiones or 6H-1,3-thiazines respectively.