作者:V. A. Mamedov、V. N. Valeeva、L. A. Antokhina、I. A. Nuretdinov
DOI:10.1007/bf00864346
日期:1992.8
The reaction of the title compound with dichloroacetic acid esters in the presence of butyllithium gave esters of 3-thienyl-3-hydroxy-2,2-dichloropropionic acid.
Novel Protocol for the Asymmetric Synthesis of 3-Hydroxy-2-(4-methoxyphenyl)-2,3-dihydro-1,5-benzothiazepin-4(5H)-one via Bakers’ Yeast Reduction
作者:Sadao Tsuboi、Takuzo Komiyama、Yutaka Takaguchi
DOI:10.3987/com-05-s(k)57
日期:——
A novel protocol for the asymmetric synthesis of 3-hydroxy-2-(4-methoxyphenyl)-2,3-dihydro-1,5-benzothiazepin-4(5H)-one is reported. Darzens condensation reactions of anisaldehyde with dichloroacetates, followed substitution reaction of sodium o-nitrophenylthiolate and bakers' yeast reduction furnished 2-hydroxy-3-(4-methoxyphenyl)-3-(2-nitrophenylsulfanyl)-propionates. Further reduction of a nitro