A cobalt-catalyzed aerobic oxysulfonylation of styrenes with sulfonyl chlorides was developed for the synthesis of β-hydroxylsulfones, which employed inexpensive cobalt as the catalyst and molecular oxygen as the oxidant
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A highly efficient transfer hydrogenation of α-aryl selenomethyl ketones to chiral β-hydroxy selenides catalysed by chiral diamine-derived ruthenium complex with a mixture of formic acid and triethylamine as a hydrogen source is described.
A highly efficient transfer hydrogenation of α-aryl selenomethyl ketones, using readily available chiral diamine-derived ruthenium complex as a catalyst and a mixture of formic acid and triethylamine as a hydrogen source in dichloromethane under ambient conditions, is described. A wide range of chiral β-hydroxy selenides was obtained in 90–99% ee values and moderate to good yields. The practicability is also demonstrated by a gram-scale synthesis and downstream derivatization.Zum Volltext
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