Crossed products: Ortho-substituted benzaldehydes react with other aromatic aldehydes in a highly selective, atom-economical Tishchenko disproportionation (see scheme) in the presence of a readily prepared, inexpensive thiolate-based catalyst. The methodology is of exceptionally wide scope and exhibits a high functional-group tolerance.
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Curran et al. (2012) studied this question.
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