Ruthenium-catalyzed regioselective [2 + 2 + 2] cyclotrimerization of trifluoromethyl group substituted internal alkynes |
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| Authors: | Kawatsura Motoi Yamamoto Mitsuaki Namioka Junya Kajita Koji Hirakawa Takuya Itoh Toshiyuki |
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| Affiliation: | Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, Koyama, Tottori, Japan. kawatsur@chem.tottori-u.ac.jp |
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| Abstract: | It found that the Ru(3)(CO)(12) coordinated with 2-(diphenylphosphino)benzonitrile (2-DPPBN) to effectively catalyze the [2 + 2 + 2] cyclotrimerization of the trifluoromethyl group substituted internal alkynes in high yields with up to >98% regioselectivity. Isolation of a ruthenacyclopentadiene was successful and confirmed that the complex is a reaction intermediate. |
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