The conjugate addition of a silyl group to enones and its removal with copper(<scp>II</scp>) bromide: a protecting group for the αβ-unsaturation of αβ-unsaturated ketones
作者:David J. Ager、Ian Fleming、Shailesh K. Patel
DOI:10.1039/p19810002520
日期:——
copper(I) salts react with enones, including esters and aldehydes, to give β-silyl carbonyl compounds in good yield. The β-silylketones can be used in synthesis without risk to the silyl group and the enone group can be restored by bromination-desilylbromination with copper(II) bromide. The principle is illustrated with syntheses of carvone and dihydrojasmone.
与铜(I)盐混合的甲硅烷基锂试剂与烯酮(包括酯和醛)反应,以高收率得到β-甲硅烷基羰基化合物。β-甲硅烷基酮可用于合成而没有甲硅烷基基团的风险,并且烯酮基团可通过用溴化铜(II)进行溴化-脱甲硅烷基溴化来恢复。香芹酮和二氢茉莉酮的合成说明了该原理。