AbstractAn efficient protocol for the synthesis of oxazoline and bisoxazoline derivatives via electrophilic cyclization of N‐(buta‐2,3‐dienyl)amides with N‐bromosuccinimide (NBS) at room temperature has been developed. Synthetic transformations of the obtained oxazolines have been successfully performed due to the presence of vinyl bromide units comprising an elimination reaction and a copper(I)‐catalyzed CN coupling reaction using diethylamine (Et2NH) as the ligand.magnified image
Studies on Electrophilic Cyclization of<i>N</i>-(Buta-2,3-dienyl)amides with<i>N</i>-Bromosuccinimide and its Applications
作者:Nan Wang、Bo Chen、Shengming Ma
DOI:10.1002/adsc.201300959
日期:2014.2.10
AbstractAn efficient protocol for the synthesis of oxazoline and bisoxazoline derivatives via electrophilic cyclization of N‐(buta‐2,3‐dienyl)amides with N‐bromosuccinimide (NBS) at room temperature has been developed. Synthetic transformations of the obtained oxazolines have been successfully performed due to the presence of vinyl bromide units comprising an elimination reaction and a copper(I)‐catalyzed CN coupling reaction using diethylamine (Et2NH) as the ligand.magnified image
Efficient synthesis of N-(buta-2,3-dienyl) amides from terminal N-propargyl amides and their synthetic potential towards oxazoline derivatives
作者:Bo Chen、Nan Wang、Wu Fan、Shengming Ma
DOI:10.1039/c2ob26291f
日期:——
A series of N-allenyl amides was prepared conveniently from N-propargyl amides in good to excellent yields via a modified procedure developed in this group. The palladium-catalyzed coupling–cyclization of these prepared N-allenyl amides in the presence of organic iodides has been developed affording the oxazoline derivatives efficiently.