This method demonstrates stereospecific carbon-carbon bond construction with alcohols in moderate to excellent yield, suggesting efficient recycling of triphenylphosphine oxide.
We report a method for the stereospecific construction of sp³-sp³ carbon-carbon bonds using alcohols and carbanion nucleophiles. The process is based on a circular phosphorus(V) manifold which starts and ends with triphenylphosphine oxide. The redox neutral approach eliminates the need for hazardous diazodicarboxylate oxidants and allows for recovery and recycling of triphenylphosphine oxide. Alcohol activation is achieved in situ through formation of alkoxyphosphonium triflates, which are kinetically stable, and undergo coupling with exogenous carbanion nucleophiles. In this manner, a range of alcohols undergo deoxyalkylation with inversion of configuration in moderate to excellent yield.
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Wood et al. (2025) studied this question.
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