Optical Resolution and Asymmetric Transformation of (<i>RS</i>)-<i>N</i>-Alkyl- and (<i>RS</i>)-<i>N,N</i>-Dialkyl-2-phenylglycines
作者:Tadashi Shiraiwa、Yoshihisa Baba、Hideya Miyazaki、Shinji Sakata、Seiko Kawamura、Masashi Uehara、Hidemoto Kurokawa
DOI:10.1246/bcsj.66.1430
日期:1993.5
Optical resolution of (RS)-N-methyl-2-phenylglycine [(RS)-Mpg] and (RS)-N-ethyl-2-phenylglycine [(RS)-Epg] was carried out by using (1S)-10-camphorsulfonic acid [(S)-CS] as resolving agents, and that of (RS)-N-ethyl-N-methyl-2-phenylglycine [(RS)-Emp] by (R)- and (S)-1-phenylethylamine. Racemization rates of optically active Mpg, Epg, Emp, N,N-dimethyl-2-phenylglycine [Dmp], and six α-amino acids were
(RS)-N-甲基-2-苯基甘氨酸 [(RS)-Mpg] 和 (RS)-N-乙基-2-苯基甘氨酸 [(RS)-Epg] 的光学拆分使用 (1S)-10 进行-樟脑磺酸 [(S)-CS] 作为拆分剂,以及 (RS)-N-乙基-N-甲基-2-苯基甘氨酸 [(RS)-Emp] 通过 (R)- 和 (S)-1 -苯乙胺。通过在羧酸中加热来测量光学活性 Mpg、Epg、Emp、N,N-二甲基-2-苯基甘氨酸 [Dmp] 和六种 α-氨基酸的外消旋化率。供电子氨基酸侧链和N-取代烷基降低了抑制中间碳负离子形成的速率,而吸电子侧链增加了它。(RS)-Mpg, (RS)-Epg 的不对称变换,