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A new and convenient two-step route to aryl-, heteroaryl-, alkenyl-, and alkynylacylsilanes is described. The corresponding aldehyde−benzotriazole−ethanol condensation products are treated with butyllithium and then reacted with trialkylsilyl chlorides to yield the substituted intermediates. Subsequent in-situ mild hydrolysis affords the title compounds in good to excellent yields.
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Katritzky et al. (1996) studied this question.
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