439863-90-8Relevant articles and documents
Synthesis of heterocyclic systems by the reaction of zwitterionic compounds with isocyanates and thiophosgene
Zaleska, Barbara,Karelus, Marcin
, p. 1831 - 1834 (2007/10/03)
The reaction of various isocyanates or thiophosgene with zwitterionic pyrimidinylium and 1,3-diazepinylium derivatives has led to the formation of unusually substituted [1,3]oxazolo[3,4-a]pyrimidines and novel heterocyclic system such as [1,3]oxazolo[3,4-