作者:Stefan Kamlage、Michael Sefkow、Nicole Zimmermann、Martin G. Peter
DOI:10.1055/s-2002-19339
日期:——
The synthesis of optically active β-benzyl-γ-butyrolactones from butynediol via four transition metal catalysed reactions is reported. Key reactions are the hitherto unknown enantioselective hydrogenation of 2-benzyl-2-buten-1,4-diols using Ir(I)-phosphinooxazoline catalysts and the regiocontrolled oxidation of the resulting 2-benzyl-1,4-butanediols to the β-substituted butyro-lactones.
报道了通过四种过渡金属催化反应从丁炔二醇合成光学活性 β-苄基-γ-丁内酯。关键反应是迄今为止未知的使用 Ir(I)-膦基恶唑啉催化剂对 2-苄基-2-丁烯-1,4-二醇进行对映选择性氢化,以及将所得 2-苄基-1,4-丁二醇区域控制氧化为 β-取代的丁内酯。