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