Synthesis of C2-symmetric trans-2,6-diarylpiperidinones via aryl cuprate addition: an unexpected stereochemical outcome
作者:Christopher L. Hamblett、David L. Sloman、Laura T. Kliman、Bruce Adams、Richard G. Ball、Matthew G. Stanton
DOI:10.1016/j.tetlet.2007.01.135
日期:2007.3
An efficient procedure for the preparation of trans-2,6-diaryl piperidinones has been developed. Addition of aryl Grignard reagents to 2-aryl dihydropyridones under catalytic copper promoted conditions generates the trans isomer exclusively, an unprecedented stereochemical event. The X-ray structures of both starting material and product have been solved and shed light on the steric constraints and
已经开发了制备反式-2,6-二芳基哌啶子酮的有效方法。在催化性铜促进条件下,将芳基格氏试剂与2-芳基二氢吡啶酮加成,将仅产生反式异构体,这是前所未有的立体化学事件。起始原料和产物的X射线结构均已解决,并阐明了空间限制和导致观察到产物的底物几何形状。反应条件容许各种芳族亲核试剂以良好的总产率产生C 2-对称产物。