A catalytic highly enantioselective allene approach to oxazolines
作者:Hongwen Luo、Zheng Yang、Weilong Lin、Yangguangyan Zheng、Shengming Ma
DOI:10.1039/c7sc04079b
日期:——
heterocyclic compounds. However, catalytic enantioselective syntheses are very limited. Here, a highly enantioselective palladium-catalyzed coupling-cyclization of readily available N-(buta-2,3-dienyl) amides with aryl or 1-alkenyl iodides has been developed for the asymmetric construction of oxazoline derivatives. Many synthetically useful functional groups are tolerated in this reaction. The absolute configuration
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.