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题名: Biscarbene complexes from the reactions of O-ethyl lactim and 1-alkynyl Fischer carbene complexes of chromium and tungsten
作者: Zheng, Zhaoyan;  Yu, Zhengkun;  Wang, Liandi;  He, Wei;  Liu, Zishuang;  Han, Xiuwen
关键词: Fischer carbene ;  O-ethyl lactim ;  biscarbene ;  chromium ;  tungsten
刊名: JOURNAL OF ORGANOMETALLIC CHEMISTRY
发表日期: 2006-11-15
DOI: 10.1016/j.jorganchem.2006.08.056
卷: 691, 期:23, 页:5007-5015
收录类别: SCI ;  IC
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Inorganic & Nuclear ;  Chemistry, Organic
研究领域[WOS]: Chemistry
英文摘要: Reactions of O-ethyl lactim similar to(CH2)(3)-N=C(OEt)similar to with 1-alkynyl Fischer carbene complexes (OC)(5)M=C(OEt)C equivalent to CPh (M = Cr, W) afforded biscarbene complexes with an azabicyclo[3.2.0]heptene core. Under a nitrogen atmosphere, the resultant chromium biscarbene complex gave a SiO2-promoted rearrangement complex in 86% yield. Thermal annelation of the rearrangement product followed by hydrolysis over SiO2 formed a cyclopentenone derivative. A cyclopentadiene derivative was obtained as a rare example of intermediate Fischer carbene species, suggesting a possible reaction pathway for the thermal annelation of the rearrangement complex. Stepwise oxidation of the chromium biscarbene complexes with an azabicyclo[3.2.0]heptene core with pyridine-N-oxide (PNO) under mild controlled conditions generated partially and completely demetalated carbonyl products, respectively. The key carbene complexes and demetalated compounds were structurally characterized by X-ray crystallographic studies. (c) 2006 Elsevier B.V. All rights reserved.
关键词[WOS]: TRANSITION-METAL-COMPLEXES ;  RAY CRYSTAL-STRUCTURE ;  ORGANIC SYNTHESES ;  REACTIVITY ;  REARRANGEMENT ;  DEMETALATION ;  ANIONS ;  BOND
语种: 英语
WOS记录号: WOS:000242304900025
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140364
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Zheng, Zhaoyan,Yu, Zhengkun,Wang, Liandi,et al. Biscarbene complexes from the reactions of O-ethyl lactim and 1-alkynyl Fischer carbene complexes of chromium and tungsten[J]. JOURNAL OF ORGANOMETALLIC CHEMISTRY,2006,691(23):5007-5015.
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