a Chemical Diversity Research Institute, 2a Rabochaya Street, Moscow Region, Khimki 141400, Russia b Department of Organic and Biological Chemistry, L. N. Tolstoy State Pedagogical University, 125 Lenin Avenue, Tula 300026, Russia
Abstract:
tert-Butyl isocyanide can serve as the convertible reagent in Groebke-Blackburn multi-component reactions. The effective removal of the tert-butyl group from the resulting imidazo1,2-a]azines and -azoles is achieved on a gram scale in two steps without chromatographic purification.