Ind. Eng. Chem. Prod. Res. Dev. 1984, 23, 629-634 629 cyclo[2.2.2]octane, 1449-91-8; trans-2-chloro-5-(chloromethyl)-5methyl-2-oxo-l,3,2-dioxaphosphorinane, 21071-81-8; cis-2-methoxy-5-(chloromethyl)-5-methyl-2-oxo-l,3,2-dioxaphosphorinane, 28097-12-3; trans-2-methoxy-5-(chloromethyl)-5-methyl-2-oxo-1,3,2-dioxaphosphorinane, 36912-27-3; cis-2-hydroxy-5-(chloromethyl)-5-methyl-2-oxo-1,3,2-dioxaphosphorinane, 36912-29-5; cis-2-phenoxy-5-(chloromethyl)-5-methyl-2-oxo-1,3,2-dioxaphosphorinane, 36912-30-8; trans-2-phenoxy-5-(chloromethyl)-5methyl-2-oxo-1,3,2-dioxaphosphorinane, 36895-18-8; cis-2-(4methoxyphenoxy)-5-(chloromethyl)-5-methyl-2-oxo-l,3,2-dioxaphosphorinane, 36912-31-9; trans-2-(4-methoxyphenoxy)-5-(chloromethyl)-5-methyl-2-oxo-1,3,2-dioxaphosphorinane, 36912-32-0; cis-2-(4-methylphenoxy)-5-(chloromethyl)-5methyl-2-oxo-1,3,2-dioxaphosphorinane, 36912-33-1; trans-2-(4methylphenoxy)-5-(chloromethyl)-5-methyl-2-oxo-1,3,2-dioxaphosphorinane, 36912-34-2; cis-2-(4-bromophenoxy)-5-(chloromethyl)-5-methyl-2-oxo-1,3,2-dioxaphosporinane, 36912-35-3; trans-2-(4-bromophenoxy)-5-(chloromethyl)-5-methyl-2-oxo-1,3,2-dioxaphosphorinane, 36912-36-4; cis-2-(4-nitrophenoxy)-5-(chloromethyl)-5-methyl-2-oxo-l,3,2-dioxaphosphorinane, 36912-37-5; trans-2-(4-nitrophenoxy)-5-(chloromethyl)-5methyl-2-oxo-1,3,2-dioxaphosphorinane, 36912-38-6; cis-2-(2,4dinitrophenoxy)-5-(chloromethyl)-5-methyl-2-oxo-1,3,2-dioxaphosphorinane, 36912-39-7; trans-2-(2,4-dinitrophenoxy)-5-(chloromethyl)-5-methyl-2-oxo-l,3,2-dioxaphosphorinane, 36912-40-0; cis-2-benzoyloxy-5-(chloromethyl)-5-methyl-2-oxo-1,3,2-dioxaphosphosphorinane, 36912-41-1; trans-2-benzoyloxy-5-(chloromethyl)-5-methyl-2-oxo-1,3,2-dioxaphosphorinane, 36912-42-2; cis-2-thiophenoxy-5-(chloromethyl)-5-methyl-2-oxo-1,3,2-dioxaphosphorinane, 36912-43-3; trans-2-thiophenoxy-5-(chloromethyl)-5-methyl-2-oxo-l,3,2-dioxaphosphorinane, 36912-44-4; cis-2-(pentylamino)-5-(chloromethyl)-5-methyl-2oxo-1,3,2-dioxaphosphorinane, 92366-30-8; trans-2-(pentylamino)-5-(chloromethyl)-5-methyl-2-oxo-1,3,2-dioxaphosphorinane, 92366-31-9; trans-2-(4-acetylphenoxy)-5-(chloromethyl)-5methyl-2-oxo-1,3,2-dioxaphosphorinane, 92366-32-0. Literature Cited Bauman, M.; Wadsworth, W. S., Jr. J . Am. Chem. SOC. 1978, 100, 6380. Gillespie, P.; Ramirez, F.; Ugi, 1.; Marquarding, D. Angew. Chem., Int. Ed. Engl. 1973, 12, 91. Rajan, S.; Kang, S.; Gutowsky, H.; Oidfield, E. J . 8/01,

Methyl acetate is one of the main byproducts in the terephthalic acid process. This investigation has been aimed to shed more light on particular aspects concerning this byproduct: the relationship between the ester production and the process variables, methyl acetate behavior in the oxidation vessel, and recycle of the ester to the oxidation. The effect of some parameter variations on the ester formation is reported. Ester formation rate and the decomposition rate constant have been also calculated for operating conditions adopted in our oxidation. The ester decomposition preferably occurs through a hydrolysis reaction. The recycle of the ester to the oxidation appears then to be a valid solution to recover selectively acetic acid from this byproduct and to reduce solvent makeup, while CH3OH decomposes to COx.The air oxidation process of p-xylene in acetic solution and in the presence of a Co-Mn-Br catalytic system is practically the only process applied on an industrial scale all over the world to terephthalic acid production (Hizicata, 1977;Roffia et al., 1980;Pohlmann et al., 1983).This process however has a drawback: part of the acetic acid used as solvent is decomposed to CO, C02, and other byproducts (Nippon Chemical Consultants, Inc., 1980;Dermietzel et al., 1983).

No abstract

Liquid phase fluorination of the ethers (I), (III), and (V) with F2 diluted with N2 yields the corresponding perfluorinated products (II), (IV), and (VI) as outlined in the reaction scheme.