Synlett 2005(18): 2759-2762  
DOI: 10.1055/s-2005-918949
LETTER
© Georg Thieme Verlag Stuttgart · New York

Allylic Amination via Decarboxylative C-N Bond Formation

Shelli R. Mellegaard-Waetzig, Dinesh Kumar Rayabarapu, Jon A. Tunge*
Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS 66045-7582, USA
Fax: +1(785)8645396; e-Mail: tunge@ku.edu;
Further Information

Publication History

Received 17 August 2005
Publication Date:
12 October 2005 (online)

Abstract

This manuscript details the development of a palladium-catalyzed allylic amination that proceeds via decarboxylation of ­allylic carbamates. Both saturated and aromatic heterocycles undergo decarboxylative rearrangement in good yields. The mechanism of allylation of heteroaromatic amines involves the formation of π-allyl palladium complexes followed by decarboxylation of the ­carbamate. Finally, the heteroaromatic anion equivalent is allylated to provide allylic amines.

12

Our attempts to utilize Ni(0) catalysts for decarboxylative allylation yielded mainly 1,5-dienes via allyl homodimerization.