📜(S)-4-Benzyl-3-Phenylacetyl-2-Oxazolidinone置于lithium Hydroxide,二甲基硫,二苯基磷酸,双氧水,Sodium Hexamethyldisilazane,三乙胺体系中,用 四氢呋喃,二氯甲烷,水,甲苯,三氟乙酸 用作溶剂,化学反应 13.0H,反应生成(3S)-3-{[(苄氧基)羰基]氨基}-3-苯丙酸
参考文献:A General Method For The Synthesis Of Enantiomerically Pure β-Substituted,β-Amino Acids Through α-Substituted Succinic Acid Derivatives
标题:A General Method For The Synthesis Of Enantiomerically Pure β-Substituted,β-Amino Acids Through α-Substituted Succinic Acid Derivatives
摘要:A General Procedure For The Synthesis Of Enantiopure Beta-Substituted,Beta-Amino Acids Is Presented. Alkylation Of The Sodium Enolates Derived From Chiral N-Acyloxazolidinone Imides 2 (R = Me,I-Pr,T-Bu,Ph,Bn) With Tert-Butyl Bromoacetate Afforded The 2-Substituted Succinate Derivatives 3 In Good Yields (82-89%) And With High Selectivity (Greater Than Or Equal To 93:7). Following Hydrolysis,Curtius Rearrangement Of The Resulting Carboxylic Acid Provided The Enantiopure Benzyloxycarbonyl (Cbz)-Protected Beta-Amino Esters 6 In Good Yields (74-79%).
Doi:10.1021/jo990756K