Cross-Alkyne Cyclotrimerization Using Liquid Enol Ethers
and Acetates

H. Hara; M. Hirano; K. Tanaka

doi:10.1055/s-2008-1078630

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Synfacts 2008(9): 0983-0983
DOI: 10.1055/s-2008-1078630

Metal-Mediated Synthesis

Cross-Alkyne Cyclotrimerization Using Liquid Enol Ethers and Acetates

Contributor(s): Paul Knochel, Tobias Thaler
H. Hara, M. Hirano, K. Tanaka*
Tokyo University of Agriculture and Technology, Japan

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Publication History

Publication Date:
22 August 2008 (online)

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Significance

Cheap liquid enol ethers and acetates were successfully used as gaseous alkyne equivalents in formal cross-cyclotrimerizations. The corresponding reactions proceeded under mild conditions with perfect regioselectivities for both cycloadditions involving 1,6-diynes and two different monoynes.