Enantioselective epoxidation of cyclic 1,3-dienes catalyzed by a sterically and electronically optimized (salen)Mn complex
作者:Sukbok Chang、Richard M Heid、Eric N Jacobsen
DOI:10.1016/s0040-4039(00)75786-8
日期:1994.1
Chiral (salen)Mn(III)Cl complexescatalyze epoxidation of cyclic 1,3-dienes with moderate-to-good enantioselectivity. A new catalyst (2), bearing sterically hindered and electrondonating OSi(iPr)3 (OTIPS) substituents, induces up to 12% higher selectivity than the previously-reported tert-butyl substituted analog 1.