反应详情

Obtained as a yellow solid (28% yield, two steps) from 3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazolo[1,5-a]pyrazine (Preparation 29a) according to the experimental procedure as described in Preparation 27b followed by purification by flash chromatography (2:8 ethyl acetate/hexane).

1. customfollowed by purification by flash chromatography (2:8 ethyl acetate/hexane)