128893-72-1

Basic information

• Product Name: Phosphonic acid, [[3,5-bis(1,1-dimethylethyl)-4-oxo-2,5-cyclohexadien-1-ylidene]methyl]-, diethyl ester
• CAS NO: 128893-72-1
• Molecular Formula: C19H31O4P
• Molecular Weight: 354.426
• Mol File: 128893-72-1.mol
• Article Data: 3

Chemical Properties

• CAS DataBase Reference: Phosphonic acid, [[3,5-bis(1,1-dimethylethyl)-4-oxo-2,5-cyclohexadien-1-ylidene]methyl]-, diethyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Phosphonic acid, [[3,5-bis(1,1-dimethylethyl)-4-oxo-2,5-cyclohexadien-1-ylidene]methyl]-, diethyl ester(128893-72-1)
• EPA Substance Registry System: Phosphonic acid, [[3,5-bis(1,1-dimethylethyl)-4-oxo-2,5-cyclohexadien-1-ylidene]methyl]-, diethyl ester(128893-72-1)

Safety Data

• Hazardous Substances Data: 128893-72-1(Hazardous Substances Data)

Upstream product

• 88-27-7 N,N-dimethyl-(3,5-di-tert-butyl-4-hydroxybenzyl)amine 
• 51917-73-8 3,5-Di-tert-butyl-4-hydroxybenzyltrimethylammonium iodide 
• 976-56-7 diethyl 4-hydroxy-3,5-di-tert-butylbenzylphosphonate 

Downstream Products

• 58186-36-0 tetraethyl (3,5-di-tert-butyl-4-hydroxyphenyl)methylenediphosphonate 

Relevant articles and documents

7-substituted quinone methides as inhibitors for unsaturated monomers

Ethylenically unsaturated monomers are protected from premature polymerization during manufacture and storage by the incorporation therein of an effective stabilizing amount of a 7-substituted quinone methide compound.

α-SUBSTITUIERTE PHOSPHONATE 55. EIN NEUES TRIPHOSPHONAT AUS BISPHOSPHONO-CHINONMETHID UND DIALKYLPHOSPHIT

By oxidation of 3,5-di-tert-butyl-4-hydroxyphenylmethanephosphonate (4) or the analogous arylsubstituted bisphosphonate (5) with PbO2 the hitherto unknown 7-mono- or 7.7-bisphosphonylated quinonemethides (13) or (11), resp., are formed in good yields.The quinonemethides simply added dialkylphosphite to form the bisphosphonate (5) or the trisphosphonate (13), the latter having a remarkable stability.The structures of the quinonemethides (13) and (11) as well as of the tris-phosphonate (12) could be proved unambiguously by IR-, 1H-, 13C- and 31P-NMR spectra.