77995-44-9

Upstream product

• 113246-90-5 2-Amino-4-phenyl-3-(1H-1,2,4-triazol-3-yl)thiophene 
• 64-19-7 acetic acid 
• 113246-86-9 4-Hydrazino-5-phenylthieno<2,3-d>pyrimidine 
• 113246-87-0 9-Phenyl-1,2,4-triazolo<1,5-c>thieno<3,2-e>pyrimidine 
• 113246-89-2 9-Phenyl-1,2,4-triazolo<4,3-c>thieno<3,2-e>pyrimidine 
• 77995-56-3 4-Hydrazino-2-methyl-5-phenylthieno<2,3-d>pyrimidine 
• 78-39-7 Triethyl orthoacetate 
• 77995-39-2 5-Methyl-9-phenyl-thieno[3,2-e][1,2,4]triazolo[4,3-c]pyrimidine 
• 64-18-6 formic acid 

Relevant academic research and scientific papers

Studies on the Synthesis and Interconversion of Isomeric Triazolothienopyrimidines. Part III. Cyclization Reactions of 2-Amino-3-(1H-1,2,4-triazol-3-yl)thiophenes

Isolation of 2-amino-3-(1H-1,2,4-triazol-3-yl)thiophenes in the hydrolytic cleavage reactions of isomeric triazolothienopyrimidines is reported.The 2-amino-3-triazolylthiophenes on reaction with one carbon donors were found to cyclize to 1,2,4-triazolothienopyrimidines, exclusively.

Studies in the Synthesis and Interconversion of Isomeric Triazolothienopyrimidines

4-Hydrazinothienopyrimidines were cyclized with triethyl orthoformate and formic acid to give 1,2,4-triazolothienopyrimidines and 1,2,4-triazolothienopyrimidines depending on the reaction conditions employed.