Journal
GREEN CHEMISTRY
Volume 12, Issue 1, Pages 45-48Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b917448f
Keywords
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Funding
- Scientific Research Foundation for the State Education Ministry [107108]
- Project of the National Science Foundation of P. R. China [J0730425]
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We report an environmentally friendly, efficient method for transforming terminal acetylenes into 1,3-diynes based on catalytic amounts of a Cu(II) salt and base under solvent-free conditions. The developed process conforms to the principles of 'green' chemistry and addresses the shortage of such methods for the synthesis of 1,3-diynes. The reaction is quite general and results in good yields. Interestingly, the system also allows the synthesis of unsymmetric 1,3-diynes by cross-coupling of two different terminal alkynes. Finally, the catalyst can also be recycled.
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