作者:Michael S. Bernatowicz、Hann-Guang Chao、Gary R. Matsueda
DOI:10.1016/0040-4039(94)88310-6
日期:1994.3
their (±)-1-(4-methoxyphenyl)ethyl (Mpe) esters in good yields by condensation with (±)-1-(4-methoxyphenyl)ethanol under mild conditions. The Mpe esters were rapidly and quantitatively cleavable by either 1% TFA in CH2Cl2 or 10% DCA in CH2Cl2, conditions which leave Boc, t-butyl ester and ether intact. An Mpe ester was removed by hydrogenolysis much more slowly than the analogous benzyl ester.
通过在温和的条件下与(±)-1-(4-甲氧基苯基)乙醇缩合,可将未受阻的羧酸以高收率转化为它们的(±)-1-(4-甲氧基苯基)乙基(Mpe)酯。将MPE酯是快速,定量裂解通过在CH任1%TFA 2氯2或10%DCA在CH 2氯2,其离开的Boc,叔丁基酯和醚完好的条件。通过氢解作用除去Mpe酯的速度比类似的苄基酯慢得多。