67106-82-5

Upstream product

• 67106-85-8 ((1R,2R)-1,2-Dibromo-1-phenyl-propyl)-phosphonic acid dimethyl ester 
• 67106-85-8 dimethyl erythro-1-phenyl-1,2-dibromopropylphosphonate 
• 10602-61-6 erythro-1-phenyl-1,2-dibromopropylphosphonic acid 
• 10562-87-5 Z-1-phenyl-1-propenylphosphonic acid 

Downstream Products

• 31026-78-5 cis-1-bromo-2-methyl-1-phenylethene 
• 80572-47-0 sodium methyl 3-oxo-1-cyclohexenyl phosphate 

Relevant academic research and scientific papers

MASS SPECTROMETRY OF 1-PHENYL-1,2-DIBROMOPROPYLPHOSPHONIC ACID AND ITS METHYL ESTERS

erythro-1-Phenyl-1,2-dibromopropylphosphonic acid is known to decompose rapidly into the monomeric metaphosphate anion(PO3(1-)), 1-phenyl-1-bromopropene, and bromide ion in protic or aprotic solvents in the presence of a hindered tertiary amine.The present study compares the behavior of this phosphonic acid in solution and in the gas phase.The gas-phase thermolysis of the acid involves mainly the loss of bromine and of the phosphoryl group, -P(O)(OR)(OR') (R=R'=H).The same type of pathway is followed in the ionization/excitation processes ("cationic reactions") that follow from electron impact in mass spectrometry.The thermal and cationic reactions of the monomethyl and dimethyl esters of the phosphoric acids (R=H, R'=CH3 and R=R'=CH3, respectively, in -P(O)(OR)(OR')) are entirely analogous to those of the free dibasic acid.

Reactions of the Monomeric Metaphosphate Anion Generated from Different Sources

The reactions of 0.2 M acetonitrile solutions of 2,4-dinitrophenyl dihydrogen phosphate and erythro-1-phenyl-1,2-dibromopropylphosphonic acid containing 2 molar equiv of diisopropylethylamine have been studied at 25 deg C by means of 31P NMR spectrometry