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Abstract The aim of this investigation was to explore the possibility to perform an asymmetric reduction, utilising a CBS ‐type catalyst, of prochiral aryl methyl ketones under electrochemical conditions to generate the needed BH 3 upon oxidation of NaBH 4 with in situ generated I 2 in the anode compartment. Therefore, various electrochemical parameters were optimised to conduct the desired formation of the chiral secondary alcohols in high to quantitative yields with a high stereochemical induction, although the catalyst loading had to be chosen relatively high to concur with the racemic reduction of the ketones by the electrogenerated BH 3 .
Abraham et al. (2024) studied this question.