Diglycollic acid

Diglycolic acid (2-oxapentane-l,5-dioic acid) [110-99-6] M 134.1, m 148 (monohydrate), pKj 2.97, pKj 4.37. Crystd from water. [Pg.206]

Triiodo-aminobenzoic acid Diglycolic acid dichloride... [Pg.827]

The resulting pure product, after drying in vacuo at 50°C still containing one molecule of methanol per two molecules of the ecid (plus 4 molecules of water), must be suspended in boiling water and steamed out. The hot suspension is filtered with suction, the white microcrystalline residue is dried in vacuo at 50°C to give 860 g (83.5% of the theoretical yield) of the pure dihydrate of the diglycolic acid di-(3-carboxy-2,4,6-triiodo anilide), /3-modification. [Pg.828]

By Formation of Two C-C Bonds 1.1.1.2.1. From Dicarbaldehydes With Diglycolic Acid Diester... [Pg.6]

Depending on the reaction circumstances, a certain amount of the sodium salt of diglycolic acid is formed ... [Pg.316]

To avoid side reactions, like the formation of diglycolic acid disodium salt, a reaction is described whereby instead of NaOH as base a so-called hindered base (e.g., tert-butoxide) is used [16]. [Pg.316]

Acrylamide - N, N -methylenebisacrylamide N-vinyl pyrrolidone - N, N -methylenebisacrylamide Fumaric acid/polyethylene glycol - N-vinyl pyrrolidone Fumaric acid/diglycolic acid - N-vinyl pyrrolidone Fumaric acid/ketomalonic acid - N-vinyl pyrrolidone Fumaric acid/ketoglutaric acid - N- vinyl pyrrolidone... [Pg.23]

Attachment of carbonyl groups to crowns makes these products more akin structurally to the natural ionophore antibiotics such as valinomycin. The dioxo-derivative (179) of 18-crown-6 was prepared in 35% yield by condensation of tetraethylene glycol and diglycolic acid chloride in benzene at 50 °C for 48 hours (Izatt et al., 1977a and 1977b). This product gives binding constants for Na+, K+ and Ba2+ in methanol which are 102—104 times less stable than for the parent crown - the lower constants are a reflection of less favourable AH values for complexation in these... [Pg.102]

In the carboxylation of the less acidic diglycolic acid Al-methylimide, (37b) was found to be superior to (29b)... [Pg.477]

Diglycolic acid Unknown s Magnesium hydroxide Unknown s... [Pg.264]

DIHYDROFURAN DIVINYL ETHER METHACROLEIN 2-BUTYNE-1,4-DIOL ganna-BUTYROLACTONE cis-CROTONIC ACID trans-CROTONIC ACID METHACRYLIC ACID METHYL ACRYLATE VINYL ACETATE ACETIC ANHYDRIDE SUCCINIC ACID DIGLYCOLIC ACID MALIC ACID TARTARIC ACID n-BUTYRONITRILE ISOBUTYRONITRILE ACETONE CYANOHYDRIN... [Pg.35]

Cannabidiolic Acid dl- and meso-Tartaric acid Citric acid Diglycolic acid Iminodiacetic acid... [Pg.341]

Digermanium hexachloride, synthesis in electric discharge, 6 173, 272 Diglycolic acid, complex formation by, 3 276 Digold heteronuclear cluster compounds. X-ray crystallography, 39 358-362... [Pg.79]

As an alternative to the Glu and Asp scaffolds, the A-(dialkyl)amide of diglycolic acid has been proposed (13). This is readily prepared by heating equivalent amounts of diglycolic anhydride and, for example, bis(octadecyl)amine in refluxing toluene for 48 hours followed by recrystallization from chloroform (mp 81-82 °C)J178 In a similar mode, polyoxyethylene of selected chain length has been used to prepare dicarboxylic acids which, upon mono-amidation with bis(alkyl)amines, yield lipo moieties (e.g., 14) that are coupled to selected amine groups of peptides to produce the peptide amphiphiles. 179180 ... [Pg.362]

In the synthesis of 1,6-anhydro-D-glucitol, at least, a 2,6-anhydride is a byproduct.53 Its structure was assigned on the basis of its i.r. spectrum, in comparison with those of the 1,6- and 1,5-anhydro-D-glucitols, and the fact that no diglycolic acid was obtained after periodate oxidation followed by oxidation with hypobromite. [Pg.245]

The 1,4-anhydrotetritols were oxidized to diglycolic acid. However, 1,4-anhydrothreitol, in which the hydroxyl groups are trans, was much more resistant than 1,4-anhydroerythritol to attack. [Pg.262]

Oxidation of tetraethylene glycol (9) results in a 50% yield of the trioxa acid 10. Additionally 16% of the dioxa acid 11 and 3% of diglycolic acid (72) are formed by probably an oxidative ether cleavage. [Pg.111]

Diglycolamic Acid or Diglycolic Acid Monoamide may be represented as... [Pg.156]

Diglycolic Acid, Diglycollic Acid or Oxydi-acetic Acid [called Diglykolsaure Dimethyl-ather-ec.a -dicarbonsaure or (Carboxymethoxy)-... [Pg.156]

Rinkenbach (Ref 2) conceived in 1953 a reaction between diglycolic acid urea ... [Pg.157]

Diglycolic Acid is now used in the manuf of resins, plasticizers, and in org synthesis (Refs 3 4)... [Pg.157]

The percentage of administered radioactivity excreted in the urine over a 24 h period in rats decreased with increasing single doses (0.25-8.08 mmol/kg bw 1,2-dichloroethane) administered by gavage in mineral oil (Payan et al., 1993). The authors attributed these results to saturation of metabolism rather than kidney damage, as there were no variations in biochemical parameters of nephrotoxicity between the controls and groups exposed to doses up to 4.04 mmol/kg bw. Urinary levels of thio-diglycolic acid increased as a linear function of the dose of 1,2-dichloroethane until... [Pg.512]

Diglycine, ilO Diglycol, bl 81 Diglycolic acid, 06I Diglyme, bl91... [Pg.205]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...