Remote stereocontrol mediated by the sulfinyl group: hydrocyanation of 2-p-tolylsulfinyl benzaldehyde
摘要:
Enantiomerically pure cyanohydrins derived from 2-p-tolyisulfinyl benzaldehyde can be obtained by reaction with different hydrocyanating reagents in the presence of Yb(OTf)(3) or Y(OTf)(3). (c) 2005 Elsevier Ltd. All rights reserved.
Remote stereocontrol mediated by the sulfinyl group: hydrocyanation of 2-p-tolylsulfinyl benzaldehyde
摘要:
Enantiomerically pure cyanohydrins derived from 2-p-tolyisulfinyl benzaldehyde can be obtained by reaction with different hydrocyanating reagents in the presence of Yb(OTf)(3) or Y(OTf)(3). (c) 2005 Elsevier Ltd. All rights reserved.
New Strategy for the Asymmetric Synthesis of Phenyl Ketone Cyanohydrins: Quaternization of Cyanohydrins Derived from 2-<i>p</i>-Tolylsulfinyl Benzaldehyde
作者:José Luis García Ruano、Ana M. Martín-Castro、Francisco Tato、César J. Pastor
DOI:10.1021/jo051029u
日期:2005.9.1
Optically pure functionalized cyanohydrins derivedfrom1-[2-(p-tolylsulfinyl)phenyl] ethanone can be obtained by the reaction of 2-p-tolylsulfinyl benzaldehyde derived cyanohydrins with bases and further treatment with suitable electrophiles. High yields and excellent stereoselectivities (up to de >98%) were obtained for these remote 1,4-asymmetric induction processes controlled by a sulfinyl chiral