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Synthesis 1988; 1988(10): 813-816
DOI: 10.1055/s-1988-27719
DOI: 10.1055/s-1988-27719
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3,5-Diaminopyrazoles and 1,3,4-Oxadiazoles From Cyanoacetothioimidates
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Publication History
Publication Date:
12 September 2002 (online)
2-Substituted 3-amino-3-(methylthio)acrylonitriles cyanoketene S,N-acetals are synthesized by two convenient methods. The imino esters of their hydrochloride salts are found to be good starting materials for the synthesis of 4-substituted 3,5-diaminopyrazoles and 2,5-disubstituted 1,3,4-oxadiazoles.