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Reaction of theN-sulfonyl heterocyclic enamines (1a/b) under asymmetric epoxidation and dihydroxylation reaction conditions leads to 2,3-dihydroxypyrrolidines and piperidines, (2a) and (2b). Only diols are observed under aminohydroxylation conditions, but Mn-mediated aziridination of (1a) provides a route to the 3-amino-2-methoxypyrrolidine derivatives (6) and (7).
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