摘要
Rhodobacter sphaeroide as a new biocatalysts were investigated in the asymmetric reduction of ketones to chiral alcohols. The cells were used in an aqueous system for the asymmetric reduction of acetophenone to prepare (S)-1-phenyl-ethanol by photo-electron-transfer reactions. It is found that higher product yield and product enantiomeric excess could be achieved. The results show that the enantiomer excess of the chiral alcohols was up to 99%(e.e.) and the yield is more than 90%. The effects of DCMU and the optimal reaction conditions on the reaction were investigated. The results show that the reaction was controlled by light completely, the optimal substrate concentration is 17.0 mmol/L, the optimal cell mass concentration is \{0.2 g/mL,\} the optimal pH is 7—8, the optimal reaction time was 72 h.
Rhodobacter sphaeroide as a new biocatalysts were investigated in the asymmetric reduction of ketones to chiral alcohols. The cells were used in an aqueous system for the asymmetric reduction of acetophenone to prepare （S）-1-phenyl-ethanol by photo-electron-transfer reactions. It is found that higher product yield and product enantiomeric excess could be achieved. The results show that the enantiomer excess of the chiral alcohols was up to 99% （e. e. ） and the yield is more than 90%. The effects of DCMU and the optimal reaction conditions on the reaction were investigated. The results show that the reaction was controlled by light completely, the optimal substrate concentration is 17.0 mmoL/L, the optimal cell mass concentration is 0. 2 g/mL, the optimal pH is 7-8, the optimal reaction time was 72 h.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第9期1686-1688,共3页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:20171030)资助
关键词
光合细菌
不对称还原
光电子传递
苯乙酮
手性醇
Photosynthetic bacteria
Asymmetric reduction
Photo electron-transfer
Acetophenone
Chiral alcohols
