A −CH2CH:C+NR2 synthon: Novel preparations of 1,3-disubstituted allylamines and of 1,2-diaryl pyrroles
摘要:
1-(3-Morpholinoprop-2-enyl)benzotriazole (1) is a useful synthon of the type [(CH2)-C---CH=C(+)NR(2)] as demonstrated by the preparation of allylamines 4. It can also provide a [(+ -) CH-CH=CH+] fragment for the synthesis of 1,2-diarylpyrroles 6.
Allylic Amination via Decarboxylative C-N Bond Formation
作者:Jon A. Tunge、Shelli R. Mellegaard-Waetzig、Dinesh Kumar Rayabarapu
DOI:10.1055/s-2005-918949
日期:——
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 Ï-allyl palladium complexes followed by decarboxylation of the carbamate. Finally, the heteroaromatic anion equivalent is allylated to provide allylic amines.