Big Chemical Encyclopedia

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

Articles Figures Tables About

Picolinic acid methyl ester

C7H7N02 picolinic acid, methyl ester 2459-07-6 389.15 33.344 1,2 10755 C7H8CIN 3-chloro-N-methyl aniline 7006-52-2 504.88 44.353 2... [Pg.453]

Picolinic acid methyl ester, L Nicotinic acid methyl ester, L Isonicotinic acid methyl ester, L... [Pg.341]

Aroylformic acids. l-Aryl-2-mtn HOAc-MeOH at 90° to afford the ketoacK only give the eoiresponding methyl ethers Cleavage of picolinic acid esters. protocol using picolinic acid as the nuc alcohols are readily reeovered, that is. alte... [Pg.142]

Green RW and Tong HK, The constitution of the pyridine monocarboxylic acids in their isoelectric forms, JACS, 78,4896-4900 (1956). Used a glass electrode standardized with phflialate solution (pH = 4.00) and the Guntelberg equation to correct for I. Estimated the microconstants from spectrophotometric data on the acid and its methyl ester pJ A, 2.11 pK, 3.13 pJ o 4.77 pKo, 3.75 where the subscripts represent the following equilibria A, diprotonated to zwitterion B, diprotonated to neutral C, zwitterion to fully deprotonated D, neutral to fully deprotonated. Also reported the corresponding data for picolinic and isonicotinic acids. [Pg.299]

Electron-attracting substituents should assist this reaction. However, with acetic anhydride in acetonitrile, 2-picolinic acid 1-oxide gives mainly pyridine 1-oxide and carbon dioxide, whilst the same reaction carried out under ultra-violet irradiation proceeds similarly but with the formation of a little more 2-hydroxypyridine. The methyl esters of the pyridine-carboxylic acid 1-oxides behave normally, but there is no evidence that the methoxycarbonyl group promotes the reaction, and 2-cyanopyridine 1-oxide does not react with acetic anhydride . The results of a kinetic study of the rearrangement of pyridine 1-oxide in acetic anhydride exclude the intramolecular rearrangement of the free cation (113) and also a free radical process. There remain the two possibilities of nucleophilic substitution by reaction between... [Pg.234]

Large rate accelerations have been observed in the metal ion-promoted hydrolysis of some lactams and these reactions are considered in Section 61.4.10. Other investigations have dealt with divalent metal ion-catalyzed hydrolysis of p-nitrophenyl picolinate in the presence of imidazoles and pyridines having hydroxyl groups in their side chains, the zinc(II)-facilitated hydrolysis of esters of 2-hydroxy acids and the metal ion-promoted hydrolysis of methyl 2-( JV-acetylhydrazono) propanoate. ... [Pg.442]

Pyridoxine hydrochloride. See Pyridoxine HCI Pyridoxine tripalmitate CAS 4372-46-7 EINECS/ELINCS 224-470-3 Synonyms Hexadecanoic acid, (6-methyl-5-((1-oxohexadecyl) oxy)-3,4-pyridinediyl) bis (methylene) ester 3-Hydroxy-4,5-dimethylol-a-picoline tris (hexadecanoate) 5-Hydroxy-6-methyl-3,4-pyridinedicarbinol tripalmitate Palmitic acid, triester with pyridoxol ... [Pg.3792]

See other pages where Picolinic acid methyl ester is mentioned: [Pg.161]    [Pg.161]    [Pg.221]    [Pg.166]    [Pg.208]    [Pg.640]    [Pg.330]    [Pg.124]    [Pg.79]    [Pg.78]    [Pg.83]    [Pg.40]    [Pg.239]    [Pg.26]    [Pg.682]    [Pg.429]    [Pg.779]    [Pg.182]    [Pg.113]    [Pg.362]    [Pg.203]    [Pg.278]    [Pg.84]    [Pg.185]    [Pg.850]    [Pg.328]    [Pg.71]    [Pg.1230]    [Pg.328]   
See also in sourсe #XX -- [ Pg.341 ]



SEARCH



4-Picoline

Picolin

Picolinates

Picolines

Picolines acidity

Picolinic acid

Picolinic acid, 2- esters

© 2024 chempedia.info