beta,beta-Disilylated Sulfones as Versatile Building Blocks in Organic Chemistry - A New Sulfonyl Carbanion Transmetalation

[摘要]：1,3-Bis(trimethylsilyl) propyl phenyl sulfone undergoes, in contrast to all reported sulfones bearing alpha-hydrogen atoms, an initial ortho metalation to an aryllithium at low temperature, which transmetalates quantitatively to the corresponding alpha-sulfonyl organolithium intermediate. Both organolithiums react selectively with aldehydes to give the corresponding products in good to excellent yields with high selectivity.

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