Abstract
A recyclable siloxy- l-serine organocatalyst has been developed to catalyze asymmetric direct aldol reactions in [bmim][BF 4], furnishing the β-hydroxy carbonyl scaffold in high enantio- and diastereoselectivities using a selection of aromatic aldehydes and cycloalkanes. The siloxy serine organocatalyst in the ionic liquid can be reused for up to four successive cycles with comparable enantioselectivities.
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