Proazaphosphatrane 1a was found to be an efficient catalyst for synthesis of beta-hydroxynitriles via the reaction of trimethylsilylacetonitrile (TMSAN) with aldehydes under mild reaction conditions and typically low catalyst loading (ca. 2 mol %). A variety of functional groups were tolerated, and good to excellent product yields were obtained.
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Wadhwa et al. (2009) studied this question.
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