Managing the Mannich: The first enantioselective vinylogous Mannich reaction of siloxyfurans with ketimines derived from unactivated ketones has been developed. Excellent yields and enantioselectivities were obtained using a new class of readily accessible cinchona alkaloid amide/Cu(OAc)2 catalysts on a range of substrates.
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Hayashi et al. (2013) studied this question.
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