Pd(CH3CN)(2)Cl-2-catalyzed I-leek reaction of different heteroaryl halides with olefins is carried out in the absence of both the ligand and base to obtain the corresponding coupling products in good yields. (C) 2011 Elsevier Ltd. All rights reserved.
Nanocrystalline magnesium oxide-stabilized palladium(0): the Heck reaction of heteroaryl bromides in the absence of additional ligands and base
An efficient and user-friendly protocol has been realized for the Heck reaction of heteroaryl bromides by using a reusablenanocrystallinemagnesiumoxide-stabilizedpalladium(0) catalyst without the aid of additional ligands and base. Dimethylamine generated under in situ conditions by the decomposition of DMF serves as the base in this reaction. The catalyst was reused with consistent activity up