N,N'-diphenyl-N,N'-bis-[2-(2,2,6,6-tetramethyl-tetrahydro-8λ5-[1,3,2]oxazaphospholo[2,3-b][1,3,2]oxazaphosphol-8-yloxy)-ethyl]-terephthalamide
3,3,7,7-tetramethyl 1-phenoxy 2,8-dioxa 5-aza 1-phosphav bicyclo(3.3.0) octane
4,4,8,8-tetramethyl 6-benzoyl 2-oxo perhydro 1,3,6,2 ?4 λ5 dioxazaphosphocine
2,2,6,6-Tetramethyl-8-(2-phenyl-2-thioxo-2λ5-[1,3,6,2]dioxazaphosphocan-6-yl)-tetrahydro-8λ5-[1,3,2]oxazaphospholo[2,3-b][1,3,2]oxazaphosphole
2,2,6,6-Tetramethyl-8-[2-(2-phenyl-2-thioxo-2λ5-[1,3,2]oxazaphospholidin-3-yl)-ethoxy]-tetrahydro-8λ5-[1,3,2]oxazaphospholo[2,3-b][1,3,2]oxazaphosphole