Active low-valent niobium catalysts from NbCl5 and hydrosilanes for selective intermolecular cycloadditions |
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| Authors: | Satoh Yasushi Obora Yasushi |
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| Affiliation: | Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, Suita, Osaka 564-8680, Japan. |
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| Abstract: | An active niobium catalyst was developed via a simple and nontoxic reduction method from NbCl(5)/hydrosilane and utilized for the selective [2 + 2 + 2] cycloaddition reaction of terminal alkynes and alkenes/α,ω-dienes, to give 1,3-cyclohexadiene derivatives in high yields with excellent chemo- and regioselectivity. |
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