Enantioselective Equilibration−Access to Chiral Aldol Adducts of Mandelic Acid Esters
作者:Stefan Scholtis、Andreas Ide、Rainer Mahrwald
DOI:10.1021/ol062252w
日期:2006.11.9
[Structure: see text] Syn-configured aldol products of mandelic acid esters and aldehydes were synthesized by the catalytic use of amines in the presence of titanium(IV) tert-butoxide. Used along with chiral N-methylephedrine, anti-configured alpha,beta-dihydroxyesters were isolated with a high degree of enantioselectivity for the first time.
[结构:见正文]在叔丁醇钛(IV)的存在下,通过胺的催化合成了扁桃酸酯和醛的顺式构筑的羟醛产物。与手性N-甲基麻黄碱一起使用时,首次以高对映选择性分离了抗构型的α,β-二羟基酯。