The reaction of N-R-2-cyanothioacetamides with ethyl[(aryl)hydrazono] chloroacetates
Depending on the nature of the substituents in the starting reagents and the basicity of the medium the cyclization of N-R-2-cyanothioacetamides with ethyl [(aryl)hydrazono]chloroacetates gives 3-aryl-2-cyanomethylidene-5- ethoxycarbonyl-1,3,4-thiadiazoles, 5-arylhydrazono-2-cyanomethylidene-3-phenyl- thiazolidin-4-ones, di[(aryl)hydrazono](ethoxycarbonylmethyl) sulfides, and 5-amino-3-cyano-2-phenyl-amino-4-(N-phenylaminothiocarbonyl)thiophene.
Britsun,Bodnar,Lozinskii
p. 93 - 97
(2007/10/03)
TRANSFORMATIONS OF N-ARYLCYANOTHIOACETAMIDES TO SUBTITUTED THIOPHENES IN THE PRESENCE OF AMINES
When heated in the presence of catalytic amounts of amines, N-arylcyanothioacetamides give 2-amino-3-arylthiocarbamoyl-4-cyano-5-arylaminothiophenes.
Kulaeva, L. N.,Pel'kis, P. S.,Lozinskii, M. O.,Kalinin, V. N.
p. 106 - 108
(2007/10/02)
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