1,1-Dimethoxyethyl(dimethyl)amine → tert-Butyl 4-(5-bromo-3-((1-(dimethylamino)ethylidene)amino)pyrazin-2-yl)piperazine-1-carboxylate

Participants

Reaction Steps

A 100 mL round bottom flask was charged with tert-butyl 4-(3-amino-5-bromopyrazin-2-yl)piperazine-1-carboxylate (1.0 g, 2.8 mmol), N,N-dimethylacetamide dimethyl acetal (0.44 g, 3.3 mmol) and toluene (20 mL). The mixture was heated at reflux for 11 h. Work-up: the solvent was evaporated to dryness. The product was used in the next step without further purification.

Provenance & Evidence