25996-12-7

Basic information

• Product Name: Phosphonic acid, [(2E)-3,7-dimethyl-2,6-octadienyl]-, diethyl ester
• CAS NO: 25996-12-7
• Molecular Formula: C14H27O3P
• Molecular Weight: 274.34
• Mol File: 25996-12-7.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Phosphonic acid, [(2E)-3,7-dimethyl-2,6-octadienyl]-, diethyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Phosphonic acid, [(2E)-3,7-dimethyl-2,6-octadienyl]-, diethyl ester(25996-12-7)
• EPA Substance Registry System: Phosphonic acid, [(2E)-3,7-dimethyl-2,6-octadienyl]-, diethyl ester(25996-12-7)

Safety Data

• Hazardous Substances Data: 25996-12-7(Hazardous Substances Data)

Upstream product

• 5389-87-7 1-chloro-3,7-dimethylocta-2,6-diene 
• 122-52-1 triethyl phosphite 

Downstream Products

• 502-65-8 lycopene 
• 57293-25-1 (E)-1-(4,8-dimethylnona-3,7-dienyl)-3-methylbenzene 

Relevant articles and documents

Method of Preparing 2,6,10-Trimethyl-1,1-Dialkoxy-3,5,9-Undecatriene Used as an Intermediate of Lycopene

The present invention describes a novel synthetic method for preparing the key intermediate 2,6,10-trimethyl-1,1-dialkoxy-3,5,9-undecatriene of lycopene. An existing synthetic method have some disadvantages that it is very difficult to gain the raw material dialkyl 4-methyl-5,5-diakoxy-1-pentene-1-phosphonate (10) because no effective synthetic method can be adopted, and furthermore the obtained target compound is composed of several cis/trans isomers. This invention relates to a process comprising a condensation step wherein a starting C10-phosphonate is changed to its carbanion completely at a temperature of ?40?30 under an atmosphere of a non-reactive gas in an organic solvent catalyzed by base, and then C4-dialkyl is added to undergo Wittig-Horner condensation. This invention affords all trans C14-acetal and this method is characterized with the advantages of simple procedure, easy access to raw material and low cost, which makes it has the value of industrial application.