Carbon Dioxide → Benzo[c]cinnoline

Participants

Reaction Steps

160 mg of 2,2'-diazidobiphenyl was dissolved in a small amount of diethyl ehter and then the solution thus obtained was dissolved in 500 ml of glycerol and the resultant solution was poured into a quarty cylindrical cell. The cell was dipped into a mixed coolant of ethyl alcohol and solid carbon dioxide to convert the solution to low-temperature rigid solution. The cell was irradiated with light in the same manner set forth in Example 1. After the irradiation, the cell was taken out of the coolant. After fluidized, the reaction product was extracted with 2l of diethyl ether. Diethyl ether was removed off by distillation. 62 mg of pure benzo[C]cinnoline was obtained by recrystallization of the residue using a mixed solvent of hexane and diethyl ether. Yield was about 52%.

Provenance & Evidence