The invention relates to an N2-substituted 1,2,3-
triazole derivative for a Cu (I) ligand as well as a preparation method and an application of the N2-substituted 1,2,3-
triazole derivative. The derivative has the structural general formula as shown in the specification, wherein R is
alkyl or
aryl, R' is H atom,
alkyl or
aryl, and X is CH or N atom. The preparation method comprises the following steps: mixing NH-1,2,3-
triazole, halogenated
hydrocarbon and K2CO3, stirring, reacting, extracting and
drying after the reaction is ended, and filtering and concentrating to obtain a coarse product; separating and purifying through thin-layer
column chromatography on
silica gel, thus obtaining the product; or mixing NH-1,2,3-triazole, halogenated
aromatic hydrocarbon, CuX and K2CO3, by taking DMF as a
solvent, heating, reacting, extracting and
drying after the reaction is ended, filtering and concentrating to obtain a coarse product, separating and purifying through thin-layer
column chromatography on
silica gel, thus obtaining the product. The invention has the advantages that the N2-substituted 1,2,3-triazole derivative is simple in synthesis and stable in property and has the characteristics of small catalyst amount, mild
reaction conditions, high product yield and high substrate adaptability.