Direct asymmetric vinylogous aldol reaction of allyl ketones with isatins: Divergent synthesis of 3-hydroxy-2-oxindole derivatives
KAUST DepartmentChemical Science Program
Homogeneous Catalysis Laboratory (HCL)
KAUST Catalysis Center (KCC)
Physical Science and Engineering (PSE) Division
Online Publication Date2013-05-03
Print Publication Date2013-06-24
Permanent link to this recordhttp://hdl.handle.net/10754/562755
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Abstract6 in 1: The highly enantioselective title reaction is mediated by a bifunctional catalyst and leads to E-configured vinylogous aldol products (see scheme). These products are used as common intermediates in the synthesis of six biologically active 3-hydroxy-2-oxindole derivatives (e.g., CPC-1). Computational studies indicated that the observed stereoselectivity is a result of favorable secondary π-π* and H-bonding interactions in the transition state. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
SponsorsThis work was supported by the NSFC (21072044) and the Program for New Century Excellent Talents in University of the Ministry of Education (NCET-11-0938) to Z.J. and by KAUST to K.-W.H.
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