asymmetric synthesis and molecular oxygen oxidation are combined with continuous reaction. Using a glass microreactor
a continuous reaction for asymmetric
α
-hydroxylation of
β
-keto ester compound is oxidized by
1
O
2
under visible light. The reaction is catalyzed by cinchona alkaloid phase transfer catalyst in gas-liquid-liquid heterogeneous system. The desired product is obtained in high yield (95%) and good enantio selectivity (87.0%) in microreactor. Compared with the batch reaction
continuous reaction greatly reduces reaction residence time from 30 min to 1.08 min and maintains high stereo selectivity. The method has the advantages of fast
low energy consumption
continuous and high efficiency
and has good industrialization pros
pects.
关键词
Keywords
references
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