Asymmetric Synthesis of<i>cis</i>- and<i>trans</i>-2-Aryl-6-methylpyrans from<scp>D</scp>-Glucose by Arylation and Inversion of Configuration at the C-2 Position
作者:Kyosuke Michigami、Atsuko Shimazaki、Masahiko Hayashi
DOI:10.1002/ejoc.201301376
日期:2014.1
Asymmetric synthesis of optically active cis- and trans-2-aryl-6-methylpyrans from commercially available tetra-O-acetyl-D-glucopyranosyl bromide has been developed. The reaction proceeds by two important steps. One is the arylation, and the other is deoxygenation at the C-3 position and inversion of configuration at the C-2 position during the preparation of the cis-isomer, when 2-aryl-3-hydroxy-
已经开发了从市售四-O-乙酰基-D-吡喃葡萄糖基溴化物不对称合成光学活性顺式和反式-2-芳基-6-甲基吡喃。该反应通过两个重要步骤进行。一种是芳基化,另一种是顺式异构体制备过程中C-3位脱氧和C-2位构型反转,当2-芳基-3-羟基-6-(羟甲基)吡喃用三甲基氯硅烷和碘化钠处理。