Selenocyclisations of homoallylic sulfonamides: A highly stereoselective route to both cis- and trans-2,5-dihydropyrroles
摘要:
Overall 5-endo-trig selenocyclisations of homoallylic sulfonamides proceed smoothly and highly stereoselectively, under a selection of conditions, to give excellent yields of selenopyrrolidines and the related trans- or cis-2,5-dihydropyrroles, after oxidation and elimination. (C) 1999 Elsevier Science Ltd. All rights reserved.