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A highly enantioselective sulfa‐Michael addition (SMA) of various thiols to α,β‐ unsaturated N ‐ acylated oxazolidinones has been achieved with a chiral squaramide catalyst under very mild reaction ...
of transformations. 1−4 High diastereoselectivity induced by N ‐acyloxazolidin‐ 2 ‐ones in alkylation, acylation , and aldol reactions has frequently been observed. 1,5,6 N ‐Enoyloxazolidin‐ 2 ‐ones have been successfully ...
with little success [58]. Wang et al. have described two types of asymmetric [3 + 6] cycloaddition of imino esters with readily available fulvenes or 2 - acyl cycloheptatrienes catalysed by Cu/TF-BiphamPhos ...
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