Desilylative activation of TMSCN in chemoselective Strecker–Ugi type reaction: functional fused imidazoles as building blocks as an entry route to annulated purines
作者:Sankar K. Guchhait、Vikas Chaudhary
DOI:10.1039/c4ob00882k
日期:——
and DABCO–THF as an appropriate system for activation in a chemoselective Strecker–Ugi type reaction, has rendered ethyl glyoxalate and various heterocyclic-2-amidines as feasible substrates, and afforded the successful synthesis of 3-amino-2-carboxyethyl substituted fused imidazoles as useful building blocks. This class of functional scaffold has provided, via construction of the fused pyrimidinone