Photochemical reaction of 3-cyclohexyl-4-phenylsydnone (4) in nitrogen atmosphere afforded 2-cyclohexyl-4, 5-diphenyl-1, 2, 3-triazole (5), 1, 2-biscyclohexylazo-1, 2- diphenylethylene (6) and 4-cyclohexyl-2-phenyl-Δ 2-1, 3, 4-oxadiazoline-5-one (7). The results showed that the reaction of 4 in the presence of carbon dioxide, carbon disulfide and dimethyl acetylenedicarboxylate proceeded via nitrile imine intermediate. Irradiation of 3-t- ...
