Z-selective metathesis homocoupling of 1,3-dienes by molybdenum and tungsten monoaryloxide pyrrolide (MAP) complexes.

Z-selective metathesis homocoupling of 1,3-dienes by molybdenum and tungsten monoaryloxide pyrrolide (MAP) complexes.
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DOI:
10.1021/ja303220j
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发表时间:
2012-07-18
影响因子:
15
通讯作者:
Hoveyda, Arnir H.
Hoveyda, Arnir H.
中科院分区:
化学1区
文献类型:
--
作者:
Townsend, Erik M.;Schrock, Richard R.;Hoveyda, Arnir H.

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含有OHIPT作为芳氧化物(六异丙基三苯氧基化物)的钼或钨MAP络合物是简单(E)-1,3-二烯均偶联以高产率和高Z选择性得到(E,Z,E)-三烯的有效催化剂。在X射线研究中,乙烯基亚烷基MAP物质显示出具有预期的顺式结构。含有OHMT(六甲基三苯氧基化物)的MAP催化剂相对低效。
Molybdenum or tungsten 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) are relatively inefficient.
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