7-Oxabicyclo -heptane-2,3-dicarboxylic

The dicarboxylation of cyclic alkenes is a useful reaction. All-c.vo-methyl-7-oxabicyclo(2.2.1]heptane-2,3,5,6-tetracarboxylate (233) was prepared from the cyclic alkene 232 using Pd on carbon and CuCh in MeOH at room temperature with high diastereoselectivity[216]. The dicarbonylation of cyclopentene... 

Numerous references to derivatives of 7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylic acid as defoliants, herbicides, fungicides, etc., are cited in index volumes of Chem. Ahstr. since Vol. 46 (1952). 

Twenty-seven two-year-old scaleless hens were transported to Visalia, CA on October 1, 1979, housed in cages overnight with food and water provided ad lib, and exposed to field applications of DEF on October 2. Some birds were repeatedly treated over the next five days. The mature cotton fields (Diversified Farming Inc.) were sprayed from a ground vehicle that treated 8 rows simultaneously with DEF-6 (0.72 kg/l, 6 lb/gal Mobay Chemical Co.) at 0.37 gal/acre and Accelerate (amine salt of endothall (7-oxabicyclo (2.2.1) heptane-2,3-dicarboxylic acid, 0.06 kg/l, 0.5 lbs/gal) at 0.19 gal/acre in 25 gal water/acre. 

OXABICYCLO(2.2.1)HEPTANE-2,3-DICARBOXYLIC ACID. DISODIUM SALT... 

SYNS AQUATHOL 3,6-ENDOOXOHEXAHYDRO-PHTHALIC ACID ENDOTHALL ENDOTHAL TECHNICAL 3,6-ENDOXOHEXAHYDROPHTHALIC ACID 3,6-endo-EPOXY-l,2-CYCLOHEXANEDI-CARBOXYLIC ACID HEXAHYDRO-3,6-endo-OXYPHTHALIC ACID HYDOUT HYDROTHAD47 7-OXABICYCLO(2.2,l)HEPTANE-2,3-DICARBOXYLIC ACID RCRA WASTE NUMBER P088 TRI-ENDOTHAL... 

In the photopolymerization of methacrylamide by benzoin methyl ether, chain-transfer to monomer has been found to be important, and benzalde-hyde is reported to be an inefficient photoinitiator of methyl methacrylate polymerization unless benzophenone and triethylamine are present. Acetophenone has been found to sensitize the cycloaddition of maleic anhydride to 7-oxabicyclo[2.2.1]heptan-5-one-2,3-dicarboxylic anhydride, , a-hydroxy-acetophenone derivatives have been found to be non-yellowing initiators, and h.p.l.c. has been used to determine residual carbonyl photoinitiators in u.v.-cured resins. In the emulsion-polymerization of methyl methacrylate using an aromatic ketone and a continuous or intermittent laser, the former conditions were found to be similar to those under continuous u.v. irradiation. The dependence of the polymerization rate and average chain-length on the absorbance of the initiator used in the photoinitiated polymerization of vinyl monomers has been studied. Interestingly, irrespective of all conditions, maximum conversion is observed when initiator absorbance is 2.51. "... 

Synonyms Dipotassium 7-oxabicyclo [2.2.1] heptane-2,3-dicarboxylate Endothall dipotassium salt 7-Endothall, dipotassium salt 7-Oxabicyclo (2.2.1) heptane-2,3-dicarboxylic acid, dipotassium salt Classification Dicarboxylic acid-disalt Empirical CsHaOs 2K Properties M.w. 262.36 Toxicology TSCA listed Uses Herbicide... 

Disodium orthophosphate. See Sodium phosphate dibasic dihydrate Disodium orthophosphate dodecahydrate. See Sodium phosphate dibasic dodecahydrate Disodium orthophosphate heptahydrate. See Sodium phosphate dibasic heptahydrate Disodium orthophosphatephosphate. See Sodium phosphate dibasic anhydrous Disodium 7-oxabicyclo (2.2.1) heptane-2,3-dicarboxylate. See Endothall sodium Disodium oxalate. See Sodium oxalate Disodium oxide. See Sodium oxide Disodium 1-[2-[(1-oxododecyl) amino] ethyl] 2-sulfonatosuccinate. See Disodium lauramido MEA-sulfosuccinate... 

Endothall sodium CAS 129-67-9 Synonyms Disodium-3,6-endohexahydrophthalate Disodium endothall Disodium 3,6-endoxohexahydrophthalate Disodium 3,6-epoxycyclohexane-1,2-dicarboxylate Disodium 7-oxabicyclo (2.2.1) heptane-2,3-dicarboxylate Endothall, disodium salt Endothal-sodium Endoxohexahydrophthalic acid disodium salt ... 

Endoxohexahydrophthalic acid, disodium salt 7-Oxabicyclo (2.2.1) heptane-2,3-dicarboxylic acid, disodium salt... 

Cantharidin (2,3-dimethyl-7-oxabicyclo[2,2,1 ]heptane-2,3-dicarboxylic anhydride) as an antitumor agent A retrospective review 13CMD159. Cyclometallated iridium(III) complex with 2,2 -biquinoline N-donor hgand as a c-myc G-quadruplex stabiHzer and down-regulator of c-myc oncogene expression 13CMD576. 

Strong eluents such as sodium nitrate may be employed. The resulting chromatogram is displayed in Figure 3.171. For the analysis of herbicides lacking a chromophore such as endothall, 7-oxabicyclo[2,2,l]-heptane-2,3-dicarboxylic acid, anion-exchange chromatography with subsequent conductivity detection provides an alternative to RPLC. 

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