55860-88-3

Basic information

• Product Name: 4-(α-Methylstyryl)-2,2,3-triphenyl-1,2λ⁵-oxaphosphetan-2-on
• CAS NO: 55860-88-3
• Molecular Weight: 436.49
• Mol File: 55860-88-3.mol

Chemical Properties

• CAS DataBase Reference: 4-(α-Methylstyryl)-2,2,3-triphenyl-1,2λ⁵-oxaphosphetan-2-on(CAS DataBase Reference)
• NIST Chemistry Reference: 4-(α-Methylstyryl)-2,2,3-triphenyl-1,2λ⁵-oxaphosphetan-2-on(55860-88-3)
• EPA Substance Registry System: 4-(α-Methylstyryl)-2,2,3-triphenyl-1,2λ⁵-oxaphosphetan-2-on(55860-88-3)

Safety Data

• Hazardous Substances Data: 55860-88-3(Hazardous Substances Data)

Upstream product

• 1499-21-4 Diphenylphosphinic chloride 
• 92-29-5 hydrobenzamide 
• 76202-74-9 N,N'-Bis-[(diphenyl-phosphinoyl)-phenyl-methyl]-C-phenyl-methanediamine 
• 101-39-3 2-methyl-3-phenyl-2-propenal 
• 17507-57-2 (diphenylphosphinyl)phenyldiazomethane 

Relevant articles and documents

Carbenes, 22. Phosphenes: Trapping Reactions of (Diphenylmethylene)phenylphosphane Oxide by -Cycloaddition with Aldehydes

The photolysis of (diazobenzyl)diphenylphosphane oxide (5) in benzene yields the short-lived (diphenylmethylene)phenylphosphane oxide (15) via the carbene 12.The heterocumulene is trapped by aromatic aldehydes, which are added to the reaction mixture, in a -cycloaddition reaction with formation of the 1,2λ5-oxaphosphetanes 16a-e.Carbene reactions with the solvent (formation of the norcaradiene 13) as well as with the trapping reagents (formation of the C/H-insertion products 10a and b) cannot be avoided.With the α,β-unsaturated aldehydes 22a-c, the 1,2λ5-oxaphosphetanes 23a-c are primarily formed.They undergo a complete or a partial photofragmentation to the 1,3-butadienes 24a-c and phenylphosphane dioxide (25).