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The first cobalt catalyzed [2 + 2 + 2] alkyne cyclotrimerization in aqueous medium at room temperature

2002; Royal Society of Chemistry; Issue: 23 Linguagem: Inglês

10.1039/b207978j

1364-548X

Yong Li, Holger Butenschön,

Cyclopropane Reaction Mechanisms

Chelate complex 1 (5 mol%) was found to catalyze the [2 + 2 + 2] cyclization of terminal alkynes in good yields in a 80/20 mixture of water and ethanol at room temperature without further activation.