The impact of immobilization of oxazaborolidines supported on silica via different substituents on the boron and nitrogen atoms is evaluated in the enantioselective reduction of acetophenone. The performances of the homogeneous analog oxazaborolidines and silica supported-ones are compared by varying different parameters. This article deals with the synthesis, characterization and catalytic evaluation of silica-supported oxazaborolidines, their recycling capabilities and regeneration limitations.
在对映体选择性还原
苯乙酮的过程中,评估了通过
硼原子和氮原子上的不同取代基将
噁唑硼烷固定在
二氧化硅上的影响。通过改变不同的参数,比较了均相类似
噁唑硼烷和
二氧化硅支撑酮的性能。本文论述了
二氧化硅支撑的
噁唑硼烷的合成、表征和催化评估,以及它们的回收能力和再生限制。