New synthetic routes to conjugated diallenes from bromoallenes and prop-2-ynyl acetates. Novel C–C coupling with copper(I) chloride
Abstract
The reactions of the bromoallenes (1) and the prop-2-ynyl acetates (3) with CuCl in dimethylformamide (DMF) at room temperature both afford the conjugated diallenes (2) in good yield.