Реакция #1726674

Уравнение реакции

hydrogen

methyl benzoyl formate

(−) cinchonidine

→

(R)-methyl mandelate

Выход 99.7%

Растворители

toluene

Условия реакции

Обработка

1. 1
   workup.ADDITIONwere mixed in an autoclave
2. 2
   Другоеwas removed by filtration
3. 3
   Другоеafter the reaction
4. 4
   КонцентрированиеThe filtrate was concentrated
5. 5
   Другоеthe residue was purified

Методика

The cross-linked Ir—Pt cluster composition obtained in Example 13 (20.2 mg), methyl benzoyl formate (164.2 mg, 1.0 mmole), (−) cinchonidine (3.8 mg, 0.013 mmole) and toluene (5 ml) were mixed in an autoclave and agitated for five hours at room temperature in a hydrogen atmosphere at a pressure of 50 atmospheres. The cross linked Ir—Pt cluster composition was removed by filtration after the reaction. The filtrate was concentrated, and the residue was purified using PTLC to obtain (R)-methyl mandelate (165.6 mg, 99.7% yield). The asymmetric yield was 62.6% ee.

Источник