作者:M. Carmen Carreño、José L. García Ruano、Miguel A. Toledo
DOI:10.1002/(sici)1521-3765(20000117)6:2<288::aid-chem288>3.0.co;2-2
日期:2000.1.17
A convergent enantioselective synthesis of (+)-royleanone (1) is described starting from enantiomerically pure (S)-3-hydroxy-2-isopropyl-5-tert-butylsulfinyl-p-benzoquinone, which is readily available from 3-isopropyl-1,2,4-trimethoxybenzene and 1,3,3-trimethyl-2-vinylcyclohexene. The key step is a tandem asymmetric Diels-Alder reaction/pyrolytic sulfoxide elimination process.
描述了从对映体纯的(S)-3-羟基-2-异丙基-5-叔丁基亚磺酰基-对苯醌开始的会聚对映体选择性合成(+)-丙酮酸酮(1),其可从3-异丙基- 1,2,4-三甲氧基苯和1,3,3-三甲基-2-乙烯基环己烯。关键步骤是串联不对称Diels-Alder反应/热解亚砜消除过程。