Oxazolidinones were effectively prepared from N-carbamylamino alcohols by treatment with nitrous acid, via N-nitroso compound as the intermediate. A new route to (R)-4-benzyloxazolidinone was developed starting from dl-phenylalanine, utilizing d-hydantoinase-catalyzed enantioselective hydrolysis of 5-benzylhydantoin under the dynamic kinetic resolution conditions, and the subsequent reduction to the precursor for the above-mentioned cyclization reaction, by taking advantage of the intermediates bearing an N-carbamylamino functionality.
以 N-亚
硝基化合物为中间体,通过
亚硝酸处理从 N-
氨基甲酰
氨基醇有效地制备了
噁唑烷酮。以 dl-苯丙
氨酸为起点,利用 d-海因酶催化的
5-苄基海因在动态动力学解析条件下的对映选择性
水解,随后利用带有 N-
氨甲酰
氨基官能团的中间体还原成上述环化反应的前体,开发出了一条制备 (R)-4-benzyloxazolidinone 的新途径。