Synthesis of Racemic and Enantiomerically Pure (R*,R*,R*)-Tris(α-methylbenzyl)phosphane− X-ray Crystal Structures of the Phosphane Oxides and Borane Complexes
作者:Paul Wyatt、Helen Eley、Jonathan Charmant、Berian J. Daniel、Anob Kantacha
DOI:10.1002/ejoc.200300396
日期:2003.11
An asymmetric synthesis of C3-symmetric phosphane 1 has been achieved. Two of the α-methylbenzyl groups were introduced as nucleophiles (using an α-methylbenzyl Grignard reagent), and asymmetry was introduced by resolution using (R)-α-methylbenzylamine. The final α-methylbenzyl group was introduced as an electrophile (α-methylbenzyl iodide) in a modestly selective reaction. (© Wiley-VCH Verlag GmbH
已实现 C3 对称磷烷 1 的不对称合成。将两个 α-甲基苄基作为亲核试剂引入(使用 α-甲基苄基格氏试剂),并通过使用 (R)-α-甲基苄胺拆分引入不对称性。最后的 α-甲基苄基作为亲电子试剂(α-甲基苄基碘)在适度选择性反应中引入。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)