发明名称 Method for resolution of D,L-alpha-phenethylamine with D(-)mandelic acid
摘要 A process for recovering optically pure D(+)alpha-phenethylamine which comprises addition of the racemic mixture to a water/acid solution, and as a resolving agent, optically active D(-)mandelic acid. An optically pure D(+)alpha-PEA mandelate salt is formed, crystallized out of solution and washed with water. The salt is broken with sodium hydroxide, or a similar base, and the D(+)PEA liberated is extracted with toluene. The D(+) PEA recovered by vacuum distillation is recovered in high yield, shows high enantiomeric purity.
申请公布号 US4983771(A) 申请公布日期 1991.01.08
申请号 US19890408290 申请日期 1989.09.18
申请人 HEXCEL CORPORATION 发明人 BRYKER, WILLIAM;AVILA, LUIS A.
分类号 C07C209/88 主分类号 C07C209/88
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