2011 Fiscal Year Final Research Report
Low-valent Niobium Catalyzed Efficient Transformation Using Simple Alkenes
| Project/Area Number |
21605011
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Element strategy
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| Research Institution | Kansai University |
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Principal Investigator |
OBORA Yasushi 関西大学, 化学生命工学部, 准教授 (50312418)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 低原子価ニオブ / 1, 3-シクロヘキサジエン / アルケン / 環化付加 |
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| Research Abstract |
Transition-metal-catalyzed[2+2+2] cycloaddition of unsaturated compounds has been extensively studied for the formation of various aromatic and unsaturated cyclic compounds. In this study, we reported that thermally stable low-vallent Nb(III) compounds, NbCl_3(DME) or NbCl_5/(TMS)_3SiH provide as an efficient catalysts for the multi-component coupling[2+2+2] intermolecular cycloaddition reaction of terminal alkynes, internal alkynes and alkenes leading to 1, 3-cyclohexadiene derivatives as the desired products in excellent yield and chemo/regioselectivity.
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