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Selenium heterocycles. XV. Reaction of 2‐aminoselenazoles and 2‐amino‐1,3,4‐selenadiazoles with acetylenic compounds
Author(s) -
Shafiee A.,
Lalezari I.
Publication year - 1975
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.5570120413
Subject(s) - chemistry , dimethyl acetylenedicarboxylate , acetylenedicarboxylate , medicinal chemistry , selenium , organic chemistry , catalysis , cycloaddition
2‐Aminoselenazoles with ethyl propiolate or dimethyl acetylenedicarboxylate gave 7 H ‐selenazolo[3,2‐ a ]pyrimidin‐7‐ones. 2‐Amino‐1,3,4‐selenadiazoles with dimethyl acetylenedicarboxylate gave 7 H ‐1,3,4‐selenadiazolo[3,2‐ a ]pyrimidin‐7‐ones; with ethyl propiolate the reaction took an unusual path and 2‐carbethoxy‐5 H ‐selenazolo[3,2‐ a ]pyrimidin‐5‐one was isolated. The assignment of the structures were supported by spectra analysis.