Palladium catalyzed couplings of enol triflates with alkynes under very mild conditions - the stereoselective synthesis of dienediynes from bis(enoltriflates)
摘要:
The stereoselectively accessible E-bis(enoltriflate) 6 couples under Pd(O)/CuI catalysis with two equiv. of alkyne giving E configuration dienediynes 7 with complete retention of stereochemistry.