تفاعل #1726674

معادلة التفاعل

hydrogen

methyl benzoyl formate

(−) cinchonidine

→

(R)-methyl mandelate

المردود 99.7%

المذيبات

toluene

ظروف التفاعل

المعالجة

1. 1
   workup.ADDITIONwere mixed in an autoclave
2. 2
   أخرىwas removed by filtration
3. 3
   أخرىafter the reaction
4. 4
   تركيزThe filtrate was concentrated
5. 5
   أخرىthe residue was purified

الإجراء التجريبي

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.

المصدر