<i>Z</i>-Selective Metathesis Homocoupling of 1,3-Dienes by Molybdenum and Tungsten Monoaryloxide Pyrrolide (MAP) Complexes
作者:Erik M. Townsend、Richard R. Schrock、Amir H. Hoveyda
DOI:10.1021/ja303220j
日期:2012.7.18
Molybdenum or tungsten monoaryloxide pyrrolide (MAP) complexes that contain OHIPT as the aryloxide (hexaisopropylterphenoxide) are effective catalysts for homocoupling of simple (E)-1,3-dienes to give (E,Z,E)-trienes in high yield and with high Z selectivities. A vinylalkylidene MAP species was shown to have the expected syn structure in an X-ray study. MAP catalysts that contain OHMT (hexamethylterphenoxide)
包含 OHIPT 作为芳基氧化物(六异丙基三苯醚)的钼或钨单芳基氧化物吡咯化物 (MAP) 配合物是简单 (E)-1,3-二烯均偶联以高产率得到 (E,Z,E)-三烯的有效催化剂高 Z 选择性。在 X 射线研究中显示出乙烯基亚烷基 MAP 物质具有预期的顺式结构。含有 OHMT(六甲基三苯醚)的 MAP 催化剂效率相对较低。