Direct β-C(sp<sup>3</sup>)–H Functionalization of Aliphatic Amines to α,β-Unsaturated Imines, Aldehydes, and Chromenes
作者:Sumana Mandal、Sujit Mahato、Chandan K. Jana
DOI:10.1021/acs.orglett.5b01744
日期:2015.8.7
functionalization of aliphatic amine was developed. The method is based on a reaction that yields enamine directly from the corresponding aliphatic amine, which otherwise requires the aid of metallic reagent and/or external oxidant. The reaction is operationally simple, general, and highly efficient in functionalizing both cyclic and acyclic amines. Structurally diverse unsaturated imines were obtained from N-heterocycles
C–H functionalization of cyclic amines: redox-annulations with α,β-unsaturated carbonyl compounds
作者:YoungKu Kang、Matthew T. Richers、Conrad H. Sawicki、Daniel Seidel
DOI:10.1039/c5cc03390j
日期:——
Cyclic amines such as pyrrolidine and 1,2,3,4-tetrahydroisoquinoline undergo redox-annulations with [small alpha],[small beta]-unsaturated aldehydes and ketones. Carboxylic acid promoted generation of a conjugated azomethine ylide is followed by 6[small pi]-electrocylization, and, in some...