Incomplete deprotonation of racemic 2-substituted cyclohexanones (d1-4) by chiral lithium amides (2) in the presence of trimethylsilyl chloride was found to give the corresponding trimethylsilyl enol ethers (5) and the unreacted ketones (4) in reasonably high enantiomeric excesses.
外消旋的2-取代的
环己酮(D1-的不完全去质子化4)通过手性
氨基化
锂(2)中的三
甲基氯硅烷的存在下,发现以得到相应的三甲基甲
硅烷的烯醇醚(5)和未反应的酮(4在相当高的对映体过量) 。