4.8 Article

Catalytic Asymmetric Construction of Spirocyclopentaneoxindoles by a Combined Ru-Catalyzed Cross-Metathesis/Double Michael Addition Sequence

Journal

ORGANIC LETTERS
Volume 13, Issue 23, Pages 6200-6203

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ol202624f

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Funding

  1. NSFC [20962023, 21162034]
  2. Program for New Century Excellent Talents in University [NCET-10-0907]

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Biologically important and synthetically challenging spirocyclopentaneoxindoles with four contiguous stereocenters including one spiroquaternary stereocenter have been constructed In good yields (72-87%) with excellent dlastereoselectIvity (16:1-30:1 dr) and enantloselectivity (93 -> 99% ee) by a combined Ru-catalyzed cross-metathesis/organocatalyzed asymmetric double-Michael addition sequence.

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