Stereoselective Rhodium-Catalyzed [3 + 2 + 1] Carbocyclization of Alkenylidenecyclopropanes with Carbon Monoxide: Theoretical Evidence for a Trimethylenemethane Metallacycle Intermediate
作者:Shivnath Mazumder、Deju Shang、Daniela E. Negru、Mu-Hyun Baik、P. Andrew Evans
DOI:10.1021/ja305467x
日期:2012.12.26
The theoretically inspired development of a Rh-catalyzed [3 + 2 + 1] carbocyclization of carbon- and heteroatom-tethered alkenylidenecyclopropanes (ACPs) with CO for the stereoselective construction of cis-fused bicyclohexenones is described. This study demonstrates that the ring opening of alkylidenecyclopropane proceeds through a Rh(III)-trimethylenemethane complex, which undergoes rate-determining