Catalyzed reactions of α-amino diazoketones with allyl sulfides: a new synthetic protocol for α-amino homoallyl ketones en route to 3-piperidinol alkaloids

Cu(acac)2-catalyzed reactions of enantiopure α-amino diazoketones with allyl sulfides provide a facile synthetic route to α-amino homoallyl ketones via 2,3-sigmatropic rearrangements of the derived allyl sulfonium ylides.