((5,8-Dimethyl-[1,2,4]triazolo[1,5-c]pyrimidin-2-yl)methyl)triphenylphosphonium chloride 、
2-methyl-5-(2-methyl-pyrrolidin-1-yl)-2H-[1,2,4]triazole-3-carbaldehyde 以affording 5,8-dimethyl-2-{(E)-2-[2-methyl-5-(2-methyl-pyrrolidin-1-yl)-2H-[1,2,4]triazol-3-yl]-vinyl}-[1,2,4]triazolo[1,5-c]pyrimidine (190 mg, 73.6%) as a bright yellow solid的产率得到5,8-dimethyl-2-{(E)-2-[2-methyl-5-(2-methyl-pyrrolidin-1-yl)-2H-[1,2,4]triazol-3-yl]-vinyl}-[ 1,2,4]triazolo[1,5-c]pyrimidine