Journal
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
Volume 2004, Issue 3, Pages 643-646Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.200300299
Keywords
alkynes; cyclotrimerization; palladium; regioselectivity; supercritical fluids
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The cyclotrimerization process of different substituted alkynes occurred smoothly in supercritical carbon dioxide for the first time. The reactions are catalyzed by palladium chloride. High yields and regioselectivities were observed when 2 equiv. of CuCl2 and 5 mL of MeOH were added. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004).
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