Highly Enantioselective One‐Pot Copper‐Catalyzed 1,4 Addition/Organocatalyzed α‐Substitution of Enals
摘要:
AbstractThe asymmetric copper‐catalyzed addition of dialkylzinc to enals followed by organocatalyzed one‐pot aldehyde α‐functionalization has been accomplished providing CC, CCl or CF bond formation. These simple procedures led to the creation of two contiguous stereocenters in excellent enantioselectivities (typical ee=99%). This methodology has been applied in the synthesis of (2S,3S) isomer of Valnoctamide®.