Application of chiral cyclic diols to asymmetric alkylation
摘要:
Chiral cyclic (6- or 7-membered ring) diols were found to be excellent chiral auxiliaries for asymmetric alkylation of cyclic (or acyclic) beta-keto esters.
Application of chiral cyclic diols to asymmetric alkylation
摘要:
Chiral cyclic (6- or 7-membered ring) diols were found to be excellent chiral auxiliaries for asymmetric alkylation of cyclic (or acyclic) beta-keto esters.
Asymmetric alkylation using chiral cyclic diols to prepare a quaternary carbon
作者:Keisuke Kato、Hiroshi Suemune、Kiyoshi Sakai
DOI:10.1016/s0040-4020(01)87012-5
日期:1994.3
Asymmetric alkylation of cyclic and acyclic beta-keto ester acetals (4, 5, 13, 14, and 18) with C-2-symmetric cycloalkane-1,2-dioxy moiety proceeded in a highly diastereoselective manner to afford enol ethers (9-12, 15-17, 19a-c) with a chiral quaternary carbon.