Highly regio and stereoselective preparation of Z silyl enol ethers and Z enol esters from ketones via manganese enolates
作者:Gérard Cahiez、Bruno Figadère、Patrick Cléry
DOI:10.1016/s0040-4039(00)73415-0
日期:1994.8
Mn-enolates are easily and quantitatively obtained under mild conditions (THF, −10°C to rt, 1h) by treatment of ketones with aromatic Mn-amides such as Ph(Me)NMnZ. They allow to prepare Z silyl enol ethers and Z enol esters in high yields and with an excellent regio- and stereoselectivity (kinetic product: ≥ 99%, Z/E: to ).
在温和条件下(THF,-10°C到rt,1h)通过用芳香族Mn-酰胺(如Ph(Me)NMnZ)处理酮,可以轻松而定量地获得Mn-烯醇盐。它们允许以高收率和极佳的区域选择性和立体选择性(动力学产物:≥99%,Z / E:至)制备Z甲硅烷基烯醇醚和Z烯醇酯。