Hydroxy maleic acid

In the first instance, the reagent was used to prepare di-hydroxy-maleic acid from tartaric acid ... [Pg.89]

P4ALEIC ANHYDRIDE, MALEIC ACID AND FUMARIC ACID] (Vol 15) 9a,21-dichloro-17-[(2-furanyl-carbonyl)oxyl]-llb-hydroxy-16a-methyl-pregna-l,4-diene-3,20-dione. See Mometasone fluroate. [Pg.304]

The most important industrial use of pentaerythritol is in a wide variety of paints, coatings, and varnishes, where the cross-linking capabiUty of the four hydroxy groups is critical. Alkyd resins (qv) are produced by reaction of pentaerythritol with organic acids such as phthaUc acid or maleic acid and natural oil species. [Pg.466]

Compared to the anodic oxidation of Z-4-octene-l,8-diol (80%, Table 8) its oxidation with pyridinium dichromate in dimethyl formamide gave as the best chemical alternative only 65 % diacid Nickel peroxide oxidation under mild conditions (1.3 eq. peroxide, 25 °C, 1 M NaOH) led to 45% hydroxy acid 75, whereas under more vigorous conditions (3 eq. peroxide, 80 °C, 1 M NaOH) maleic acid was formed ... [Pg.111]

VITAMINS - BIOTIN] (Vol 25) - [MAT. ETC ANHYDRIDE, MALEIC ACID AND FUMARIC ACID] (Vol 15) - [MAIONIC ACID AND DERIVATIVES] (Vol 15) - [MICROBIALTRANSFORMATIONS] (Voll6) -as food additive [FOOD ADDITIVES] (Vol 11) -fortifying roan [PAPERMAKING ADDITIVES] (Vol 18) -hydrahonof [HYDROXY DICARBOXYLIC ACIDS] (Vol 13) -m meat processing [MEAT PRODUCTS] (Vol 16)... [Pg.426]

BA BuE-PA BE-HET BE-HHPA BE-MA BE-PA BE-SA CA CHX DMA DMBA DY 062 GA HEB HHPA HMTA MA MTHPA NMA benzoic acid monobutylester of phthalic acid monobenzylester of hexachloroendomethylenetetrahydrophthalic acid monobenzylester of hexahydrophthalic acid monobenzylester of maleic acid monobenzylester of phthalic acid monobenzylester of succinic acid citraconic anhydride cyclohexanol N,N-dimethylaniline dimethylbenzylamine high boiling tertiary amine (Ciba Geigy AG) gjptaric anhydride 2-hydroxy-4-(2,3-epoxypropoxy)benzophenone hexahydrophthalic anhydride hexamethylenetetramine maleic anhydride methyltetrahydrophthalic anhydride nadic methyl anhydride (methylbicyclo[2.2.1]heptene-2,3-dicarboxylic anhydride isomers)... [Pg.92]

Alkyl-substituted oxazoles have been found to react with maleic acid or its anhydride in a diene synthesis to yield substituted pyridine readily converted to pyridoxine (39). In this route, ethyl d, 1-alaninate hydrochloride is treated with formic-acetic anhydride to yield ethyl N-formyl d,1-alaninate (78%). This compound is refluxed in chloroform with phosphorous pentoxide (40), quenched with aqueous potassium hydroxide, and the organic layer distilled to give 4-methyl-5-ethoxyoxazole (I) (60%). The resulting oxazole (I) is condensed readily with a number of appropriate dienophiles to form 2-methyl-3-hydroxy-4,5-disubstituted-pyridines containing substituents (III, a, b, c) which could be converted to pyridoxine as follows ... [Pg.463]

Chemical Name 2-(Dimethylamino)ethyl(5-hydroxy-4-(hydroxymethyl)-6-methyl-3-pyridyl)methyl succinate salt with maleic acid (1 2)... [Pg.2925]

Morpholino-4-hydroxy-l,2,5-thiadiazole Maleic acid Sodium borohydride... [Pg.3238]

Teomim et al. [406] reported the synthesis of ricinoleic acid and hydrogenated ricinoleic acid (hydroxystearic acid)-based monomers, which were synthesized from the attachment of a carboxylic acid side chain via a hydrolyzable ester bond to the hydroxy group (succinic acid/maleic acid). These monomers were... [Pg.105]

P ENT 18,870 FAIR 30 FAIR PS HYDRAZID KYSELINY MALEINOVE 6-HYDROXY-3(2H)-PYRIDAZINONE KMH MAH MAINTAIN 3 MALAZIDE MALEIC ACID HYDRAZIDE MALEIC HYDRAZIDE MALEIC HTORAZIDE 30% MALEIC HYDRAZINE i L LEIN 30 MALEINSAEUREHYDR-AZID N.N-MALEOYLHYDRAZINE MALZID MH... [Pg.506]

Rochelle (7) evaluated available kinetic data on sulfite addition to maleic or acrylic acid to give sulfosuccinic or 8-sulfopropicnfc acid. Cavanaugh (14) demonstrated the feasibility of hydrating acrylic acid with H2SO4 catalysis at 100°C to get g-hydroxy-propionic acid. [Pg.245]

The well-established exchange reaction of hydroxy or oxo groups in azine chemistry with phosphoryl chloride to afford the corresponding chloro compounds has also been applied to pyrido[4,3-t]pyridazin-3(2//)-oncs to give I.142 In cases of a free 6-NH function the unstable chloro compounds may be isolated as salts such as salts of maleic acid. [Pg.78]

A mixture of 4-keto-6-chloro-l,2,3,4-letrahydroquinaldine, Pd-blaek, 30%-Pd-on-carbon, maleic acid as Ha-acceptor, K-carbonate. and water refluxed 24 hrs. — 4-hydroxy-6-chloroquin aldine. Crude Y 95%.— A pH of 9-10 is necessary, whereas the dehydrogenation of tetra-hydroquinolines proceeds smoothly at a pH of 7, without addition of K-carbonate. (F. e. s. E. C. Elderfield and A. Maggiolo, Am. Soc. 71, 1906 (1949).)... [Pg.484]

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