Catalytic and stereoselective iodination of prochiral C–H bonds
摘要:
Oxazo lines were employed,as cyclic chiral directing groups for stereoselective C-H activation. Oxazoline-directed cleavage of the P-C-H bonds followed by reaction with I, gave a wide range of iodinated products. A large range of functional groups are tolerated. PdI2 was isolated in the reaction and found to be converted to Pd(OAc)(2) upon treatment with a combination Of I-2 and PhI(OAC)(2) in situ to achieve catalytic turnover. Diastereoselective iodination of prochiral C-H bonds were also investigated. (c) 2005 Elsevier Ltd. All rights reserved.
[EN] CATALYTICS ASYMMETRIC ACTIVATION OF UNACTIVATED C-H BONDS, AND COMPOUNDS RELATED THERETO [FR] ACTIVATION CATALYTIQUE ASYMETRIQUE DE LIAISONS C-H INACTIVEES ET COMPOSES ASSOCIES
Pd-Catalyzed Stereoselective Oxidation of Methyl Groups by Inexpensive Oxidants under Mild Conditions: A Dual Role for Carboxylic Anhydrides in Catalytic CH Bond Oxidation