M. Baenziger, Estelle Durantie, C. Mathes
Jan 31, 2017
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Influential Citations
8
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Journal
Synthesis
Abstract
Abstract 3-Aminoimidazo[1,2-a]pyrazine is an important scaffold that is found in many drugs. This scaffold is rapidly accessible through a Groebke–Blackburn–Bienaymé cyclisation starting from an aminopyrazine, an aldehyde and an isocyanide. A scale-up process of this multicomponent reaction has been achieved in high yield and with excellent purity. The scope and limitations of this process leading to various 3-aminoimidazo[1,2-a]pyrazines are disclosed.