作者:Steven J. Mansfield、Craig D. Campbell、Michael W. Jones、Edward A. Anderson
DOI:10.1039/c4cc07876d
日期:——
A flexible, modular ynamide synthesis is reported that uses a wide range of amides and electrophiles, including acyclic carbamates, hindered sulfonamides, and aryl amides.
[2,3]-Sigmatropic Rearrangement of Ynamides: Preparation of α-Amino Allenephosphonates
作者:Filipe Gomes、Antoine Fadel、Nicolas Rabasso
DOI:10.1021/jo300790m
日期:2012.6.15
synthesized from unprotected 1-bromopropargyl alcohols using a copper(II) catalyzed coupling reaction. In the second step, the previously prepared ynamides were transformed directly to allenes through a [2,3]-sigmatropic rearrangement of propargyl phosphites. This efficient method led to the formation of a series of α-amino allenephosphonates with diverse substituents on the amine, the phosphonate, and the