Two methods for the preparation of 2-cyclohexenones from resin-bound 1,3-cyclohexanedione
作者:Mark E. Fraley、Robert S. Rubino
DOI:10.1016/s0040-4039(97)00631-x
日期:1997.5
The addition of organolithium or Grignard reagents to vinylogous ester resin 1 followed by mild hydrolysis of product resins 2 provides 3-alkyl-2-cyclohexenones in high purity (>95%). Alternatively, conversion of 1 to vinyl triflate resin 4 followed by palladium-mediated couplings with aryl boronic acids and hydrolysis furnishes 3-aryl-2-cyclohexenones in lower yield, but exceptional purity.
将有机锂或格氏试剂添加到乙烯基酯树脂1中,然后产物树脂2的温和水解提供了高纯度(> 95%)的3-烷基-2-环己烯酮。或者,将1转化为三氟甲基丙烯酸酯树脂4,然后与芳基硼酸进行钯介导的偶联并水解,从而以较低的收率提供了3-芳基-2-环己酮,但纯度却很高。