3,4,8,9-tetramethylene-2,7-di-p-tolyl-1,6-dioxecane
2,7-bis(4-fluorophenyl)-4,9-dimethylene-1,6-dioxecane
2,7-bis(4-fluorophenyl)-3,4,8,9-tetramethylene-1,6-dioxecane
3,4,8,9-tetramethylene-2,7-diphenyl-1,6-dioxecane
2,7-bis(3-methoxyphenyl)-3,4,8,9-tetramethylene-1,6-dioxecane