A highly practical instant catalyst for cyclotrimerization of alkynes to substituted benzenes |
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Authors: | Saino Naoko Amemiya Fumihiro Tanabe Emi Kase Kouki Okamoto Sentaro |
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Affiliation: | Department of Applied Chemistry, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan. |
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Abstract: | [reaction: see text] A 2-(2,6-diisopropylphenyl)iminomethylpyridine (1a)/CoCl(2).6H(2)O/Zn reagent has been developed as an effective instant catalyst for the intra- and intermolecular cyclotrimerization of alkynes to substituted benzenes, making the method extremely practical since the reagent, 1a/CoCl(2).6H(2)O/Zn, is inexpensive and easy to handle and the reaction is less sensitive to moisture and is reasonably general. |
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