The Rh-catalysed hydroformylation of isopropylidenecyclohexane derivatives obtained by intramolecular diene cyclisations affords the corresponding aldehydes in good yields and in a completely chemo- and regioselective manner. Diastereoselectivities of ca. 90 % were achieved for all substrates when a bulky phosphite was used as the Rh ligand. Thestereochemical outcomes of the hydroformylation reactions
通过分子内二烯环化获得的
异亚丙基环己烷衍
生物的 Rh 催化加氢甲酰化以良好的收率和完全
化学和区域选择性的方式提供相应的醛。约的非对映选择性。当大的
亚磷酸酯用作 Rh
配体时,所有底物都达到了 90%。加氢甲酰化反应的立体
化学结果通过详细的 NMR 研究确定。还介绍了不同醛的嗅觉评估。(© Wiley-
VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)