Controlled Rh-Catalyzed Mono and Double Decarbonylation of Alkynyl α-Diones to Form Conjugated Ynones and Disubstituted Alkynes

摘要

A Rh-catalyzed controlled decarbonylation of alkynyl α-diones is described. By using different ligand and solvent combinations, mono and double decarbonylation can be selectively achieved to give conjugated ynones and disubstituted alkynes, respectively. A fundamental study on catalytic activation of un-strained C−C bonds under non-oxidative conditions is presented.