Chromophoric Lewis Base Adducts of Methyltrioxorhenium: Synthesis, Catalysis and Photochemistry
Chromophoric Lewis Base Adducts of Methyltrioxorhenium: Synthesis, Catalysis and Photochemistry
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甲基三氧铼发色路易斯碱加合物：合成、催化和光化学
DOI：
10.1002/ejic.201000348
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发表时间：
2010
影响因子：
2.3
通讯作者：
F. E. Kühn
中科院分区：
文献类型：
--
作者：
Simone A. Hauser;Valentina Korinth;E. Herdtweck;M. Cokoja;W. Herrmann;F. E. Kühn
研究了一系列甲基三氧化铼（MTO）的发色刘易斯碱加合物。配体是吡啶衍生物，具有不同大小的芳族体系和可变的取代基，从而提供了电子和空间参数的变化。配合物进行了充分的特点（UV/维斯，IR和NMR光谱，单晶X-射线衍射和元素分析），并通过UV/维斯光谱测定其在二氯甲烷中的稳定常数。此外，本报告提出了这些N-供体配体配位到MTO的1-辛烯环氧化催化活性的影响进行了研究。每种化合物测试两次;在避光和日光下的催化反应中。用（17）O-NMR和UV/维斯光谱研究了配合物在紫外光照射下的行为。本文公开的实验旨在探索CTO加合物中发色N-供体配体的潜在有益作用，因为它们可能通过提供额外的能量来削弱催化循环期间必须断裂的键来激活催化系统。
A series of chromophoric Lewis base adducts of methyltrioxorhenium (MTO) was examined. The ligands were pyridine derivatives with different size of the aromatic system and variable substituents, thus providing a variation of electronic and steric parameters. The complexes were fully characterised (UV/Vis, IR and NMR spectroscopy, single-crystal X-ray diffraction and elemental analysis) and their stability constants in dichloromethane were determined by means of UV/Vis spectroscopy. Moreover, this report presents a study of the influence of these N-donor ligands coordinated to MTO on the catalytic activity of epoxidation of 1-octene. Each compound was tested twice; in a catalytic reaction under exclusion of light and in daylight. No significant differences in catalytic performance were found. The behaviour of the complexes under irradiation with UV light was investigated by means of (17)O-NMR and UV/Vis spectroscopy. The herein exposed experiments aimed for probing potential beneficial effects of chromophoric N-donor ligands in MTO adducts, as they might activate the catalytic system by providing additional energy for weakening bonds that have to be broken during the catalytic cycle.
甲基三氧铼和 3-氰基吡啶催化的过氧化氢水溶液对烯烃的有效环氧化。
DOI：
10.1021/jo005623
发表时间：
2000
期刊：
The Journal of organic chemistry
影响因子：
--
作者：
Adolfsson,H;Copéret,C;Chiang,JP;Yudin,AK
通讯作者：
Yudin,AK
影响因子：
16.6
作者：
Kudo, N;Perseghini, M;Fu, GC
通讯作者：
Fu, GC