Journal
GREEN CHEMISTRY
Volume 15, Issue 2, Pages 490-495Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2gc36584g
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Funding
- Grants-in-Aid for Scientific Research [24590015] Funding Source: KAKEN
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Copper catalysts supported on chelate resins bearing iminodiacetate moieties (DIAION CR11) or polyamine moieties (DIAION CR20) as chelating functional groups (12% Cu/CR11 and 7% Cu/CR20, respectively) were developed. 12% Cu/CR11 effectively catalyzed the Huisgen cycloaddition of mono-substituted alkynes to azides in the presence of triethylamine under totally solvent-free conditions to afford the corresponding 1,4-disubstituted 1,2,3-triazoles in excellent yields and in a completely regioselective manner. Furthermore, the Huisgen cycloaddition was found to effectively proceed without addition of triethylamine by the use of 7% Pd/CR20 as a catalyst.
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