HRID429917

反应详情

EQUATION

反应方程式

HRID 429917 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

According to example 142, 3.27 g of tert-butyl (2R, 3S)-(−)-6-oxo-2,3-diphenyl-4-morpholinecarboxylate was alkylated with 2.23 g of 3-(3-pentyl)benzyl bromide in 70 mL of anhydrous TBF using 9.71 mL of 1 M sodium bis(trimethylsilyl)amide in THF. The crude product was subjected to flash chromatography on silica gel (9:1 hexane:EtOAc) and then recrystallization from EtOH-water to afford 2.26 g (48%) of tert-butyl (2R,3S,5S)-6-oxo-2,3-diphenyl-5-(3-(3-pentyl)benzyl)4-morpholinecarboxylate as a white crystalline solid, m.p. 143-144° C.

WORKUP

后处理

  1. customrecrystallization from EtOH-water