Highly Diastereoselective Synthesis of the 1,1‘-Binaphthol Unit on a Bile Acid Template
作者:Achintya K. Bandyopadhyaya、N. M. Sangeetha、Uday Maitra
DOI:10.1021/jo000703z
日期:2000.12.1
The use of 7-deoxycholic acid as a chiral template in the asymmetric syntheses of 1,1'-binaphthyl-2,2'-diol derivatives is reported. Intramolecular coupling of compounds 7 and 11 have been carried out with Mn(acac)(3) in CH(3)CN to afford coupled binaphthol products 8 and 12 with 65% and >99% diastereoselectivity, respectively. In both cases the predominant formation of the (S) isomers were predicted
据报道在1,1′-联萘-2,2′-二醇衍生物的不对称合成中使用7-脱氧胆酸作为手性模板。用CH(3)CN中的Mn(acac)(3)进行了化合物7和11的分子内偶联,从而分别制得了具有65%和> 99%非对映选择性的联萘酚产物8和12。在两种情况下,通过计算机模型研究预测了(S)异构体的主要形成。在化合物12的情况下证实了这一点。