KMnO4-Mediated Oxidation as a Continuous Flow Process
摘要:
An efficient and easily scalable transformation of alcohols and aldehydes to carboxylic acids and nitroalkane derivatives to the corresponding carbonyls and carboxylic acids using permanganate as the oxidant within a continuous flow reactor is reported. Notably, the generation and downstream processing of MnO2 slurries was not found to cause any blocking of the reactor when ultrasound pulses were applied to the flow system.
Transglutaminase was first used to catalyze Henry reactions of aliphatic, aromatic and hetero-aromatic aldehydes with nitroalkanes. The reactions were carried out at room temperature, and the corresponding nitro alcohols were obtained in yields Lip to 96%. (C) 2009 Elsevier B.V. All rights reserved.