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Synthesis and structural characterization of (pyrazolyl)alkenyl Fischer carbene complexes of chromium and tungsten
Gu, KC; Chen, JZ; Zheng, ZY; Wu, SZ; Wu, XW; Han, XW; Yu, ZK; Yu ZK(余正坤); Yu ZK(余正坤)
关键词Fischer Carbene Pyrazole Michael Addition Chromium Tungsten
刊名POLYHEDRON
2005-01-06
DOI10.1016/j.poly.2004.11.012
24期:1页:173-180
收录类别SCI
文章类型Article
部门归属2,5
项目归属203,502
产权排名1;1
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Inorganic & Nuclear ; Crystallography
研究领域[WOS]Chemistry ; Crystallography
关键词[WOS]TRANSITION-METAL-COMPLEXES ; ORGANIC SYNTHESES ; ALKYNYLCARBENE COMPLEXES ; ANNULATION REACTIONS ; MICHAEL ADDITION ; TRIPLE BOND ; IMINES ; LIGAND ; STEREOCHEMISTRY ; CYCLOADDITION
英文摘要Michael addition of substituted pyrazoles 2 to 1-alkynyl Fischer carbene complexes (CO)(5)M=C(OEt)(CdropCPh) (1) (a, M = Cr and b M = W) afforded (pyrazolyl)alkenyl Fischer carbene complexes (CO)(5)M=C(OEt)(CH=C(R(1)R(2)R(3)pz)Ph) (R(1)R(2)R(3)pz = pyrazolyl) 3 (M = Cr) and 4 (M = W), respectively, with an exclusive (E)-configuration in mild to excellent yields. The reaction of la and 3,5-dimethylpyrazole (2b) was monitored to demonstrate the formation and decomposition of complex 3b by H-1 NMR measurements in CDCl3 at 23degreesC. Complexes 3 and 4 were characterized with H-1, C-13{H-1} NMR, IR spectroscopies and elemental analysis. When the substituted pyrazoles were 3-methylpyrazole (2a) and 3,5-di-tert-butylpyrazole (2d), molecular structures of the corresponding (pyrazolyl)alkenyl Fischer carbene complexes 3a and 4d were characterized by X-ray crystallographic study. (C) 2004 Elsevier Ltd. All rights reserved.
语种英语
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WOS记录号WOS:000226542200017
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/93059
专题中国科学院大连化学物理研究所
通讯作者Yu ZK(余正坤); Yu ZK(余正坤)
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China
推荐引用方式
GB/T 7714
Gu, KC,Chen, JZ,Zheng, ZY,et al. Synthesis and structural characterization of (pyrazolyl)alkenyl Fischer carbene complexes of chromium and tungsten[J]. POLYHEDRON,2005,24(1):173-180.
APA Gu, KC.,Chen, JZ.,Zheng, ZY.,Wu, SZ.,Wu, XW.,...&余正坤.(2005).Synthesis and structural characterization of (pyrazolyl)alkenyl Fischer carbene complexes of chromium and tungsten.POLYHEDRON,24(1),173-180.
MLA Gu, KC,et al."Synthesis and structural characterization of (pyrazolyl)alkenyl Fischer carbene complexes of chromium and tungsten".POLYHEDRON 24.1(2005):173-180.
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