Activating Azides and Alkynes for the Click Reaction with [Cu(
<i>a</i>
NHC)
<sub>2</sub>
I] or [Cu(
<i>a</i>
NHC)
<sub>2</sub>
]
<sup>+</sup>
(
<i>a</i>
NHC = Triazole‐Derived Abnormal Carbenes): Structural Characterization and Catalytic Properties
作者:Stephan Hohloch、Damaris Scheiffele、Biprajit Sarkar
DOI:10.1002/ejic.201300150
日期:2013.8.6
single-crystal X-ray diffraction analyses. In 6, the copper(I) center is tricoordinated, and its geometry is in between trigonal planar and T-shaped. In halide-free 11, the copper(I) center is linearly coordinated by two abnormal-carbene ligands. All complexes were tested as catalysts in the Huisgen [3+2] cycloaddition reaction between azides and alkynes, and they showed excellent efficiencies under neat conditions
中性含碘铜 (I) 络合物 [Cu(aNHC)2I] aNHC = 1-benzyl-3-methyl-4-phenyl-1,2,3-triazol-5-ylidene (for 6) 和 3-甲基-1-[2-(甲硫基)苯基]-4-苯基-1,2,3-triazol-5-ylidene (for 7)} 和阳离子、无卤化物的铜 (I) 配合物 [Cu(aNHC)2 ](BF4) aNHC = 1-benzyl-3-methyl-4-phenyl-1,2,3-triazol-5-ylidene (for 8), 3-methyl-1,4-diphenyl-1,2,3 -triazol-5-ylidene (for 9), 3-methyl-1-[2-(methylthio)phenyl]-4-phenyl-1,2,3-triazol-5-ylidene (for 10), and 1-mesityl