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Studies in the synthesis and interconversion of isomeric triazolothienopyrimidines
Author(s) -
Shishoo C. J.,
Devani M. B.,
Ullas G. V.,
Ananthan S.,
Bhadti V. S.
Publication year - 1981
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570180109
Subject(s) - chemistry , triethyl orthoformate , formic acid , stereochemistry , medicinal chemistry , organic chemistry , catalysis
Abstract 4‐Hydrazinothieno[2,3‐ d ]pyrimidines were cyclized with triethyl orthoformate and formic acid to give 1,2,4‐triazolo[4,3‐ c ]thieno[3,2‐ e ]pyrimidines and 1,2,4‐triazolo[2,3‐ c ]thieno[3,2‐ e ]pyrimidines depending on the reaction conditions employed.