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Phenylvaleric acids

Methyl-l-tetralone has been prepared from 7-phenylvaleric acid and sulfuric acid 8 and from 7-phenylvaleryl chloride and aluminum chloride.910 Its preparation from 7-valerolactone has not been described elsewhere. [Pg.97]

Phenylpiperidine, 34, 79 Phenylsuccinic acid, 30, 83 Phenylsuccinic anhydride, 30, 85 Phenylthiourea, 31, 22 Phenyl -tolyl sulfone, 32, 10 7-Phenylvaleric acid, 36, 97... [Pg.58]

Phenylacetonitrile is alkylated with secondary butyl bromide and the resultant nitrile is hydrolyzed to 3-methyl-2-phenylvaleric acid. The acid is converted to the acid chioride with thionyl chloride and the acid chloride is in turn reacted with 1-methyl-4-piperidinol. Finally dimethyl sulfate is reacted with the ester. [Pg.1185]

Lithium enolates of carboxylic acids such as phenylacetic acid or of amides such as N-methyl-N-phenylvaleric acid amide 1974 are oxidized by BTSP 1949 to a-hydroxy acids, which are isolated after esterification, e.g., to 1973, or to a-hydroxyamides such as 1975 [155] (Scheme 12.43) (cf. also the formation of 3-hydroxybutyrolactam 1962). [Pg.287]

A subsequent detailed analysis of the permanganate oxidation of the tertiary hydrogen atom of 4-phenylvaleric acid in 2.5 M potassium hydroxide solution supports the caged radical mechanism. The reaction order is two overall, A h/ d is ca. 11.5, ring substitution has little elfect on the rate (p 0) and the oxidation proceeds with a net 30-40 % retention of optical configuration. [Pg.298]

Carboxy acids 5-Phenylvaleric acid DMPC Sonicated SUV 4.88 2.94 1.44 [4]... [Pg.230]

Other cyclic tetrapeptides have also been isolated by Japanese workers and AM toxins I, II, and III, isolated from Alternaria mail., are extremely toxic to certain plant species (9.10). These are constructed of L- i-hydroxyisovaleric acid, L-alanine, c-amino-acrylic acid and, in AM toxin I, L-6(-amino- -( .-methoxyphenyl)-valeric acid. The phenyl residue in AM toxin II is L-t(-amino-S-phenylvaleric acid, while in AM toxin III, it is L-ol-amino-( .-hydroxyphenyl)valeric acid (Figure 2), All the AM toxins produce leaf spot, or necrosis, in apple but as might he expected slight change in substitution (R-group) on the phenyl ring radically alters the specific activity of the molecule. Both AM toxin I and III induce interveinal necrosis in the "Indo" apple cultivar, which is also highly susceptible to A. mail. at concentrations as low as 0.1 pph within 18 h after treatment. In contrast, the resistant apple cultivar "Jonathan" is only affected by 1 ppm of AM toxin I and 10 ppm of AM toxin III. [Pg.26]

Calls, I. et al., Phenylvaleric acid and flavonoid glycosides from Polygonum salicifolium, J. Nat. Prod., 62, 1101, 1999. [Pg.1068]

Fig. 2.2 Chemical structures of amlodipine (1), 5-phenylvaleric acid (2), 4-phenylbutylamine (3), and 5-hydroxyquinoline (4). (Reprinted from ref. 45 with permission from the American Pharmaceutical Association.)... Fig. 2.2 Chemical structures of amlodipine (1), 5-phenylvaleric acid (2), 4-phenylbutylamine (3), and 5-hydroxyquinoline (4). (Reprinted from ref. 45 with permission from the American Pharmaceutical Association.)...
Fig. 5.10. Gas chromatogram of ethyl esters of phenylcarboxylic adds (2.5 —7.5 Mg). Peaks 1 = benzoic 2 = phenylacetic 3 = 2-phenylpropionic 4 = 2-phenylbutyric 5 = 3-phenylpropionic 6 = 3-phenylbutyric 7 = 4-phenylbutyric 8 = 4-phenylvaleric 9 = 5-phenylvaleric acid S = n-tridecane (internal standard) X = blanks of reagent and products from side-reactions. Conditions column,... Fig. 5.10. Gas chromatogram of ethyl esters of phenylcarboxylic adds (2.5 —7.5 Mg). Peaks 1 = benzoic 2 = phenylacetic 3 = 2-phenylpropionic 4 = 2-phenylbutyric 5 = 3-phenylpropionic 6 = 3-phenylbutyric 7 = 4-phenylbutyric 8 = 4-phenylvaleric 9 = 5-phenylvaleric acid S = n-tridecane (internal standard) X = blanks of reagent and products from side-reactions. Conditions column,...
Hydrogenolysis of 2-pyrone derivatives to give open-chain products occurs especially readily when phenyl group is substituted in the 6 position.237,238 4-Ethoxy- and 4-hy-droxy-6-phenyl-5,6-dihydro-2-pyrones were hydrogenated to give 3-ethoxy-5-phenyl-2-pentenoic acid and 3-hydroxy-5-phenylvaleric acid, respectively, over Raney Ni at room temperature and 0.3 MPa H2 (eq. 12.126).237... [Pg.560]

METHYL-l-PHENYL-3-(2-SULFOETHYL)TRIAZENE SODIUM SALT see PEJ250 3-METHYL-2-PHEN YLTETRAHYDRO-2H-1,4-OXAZINE HYDROCHLORIDE see MNV750 3-METHYL-2-PHENYLVALERIC ACID-2-DIETHYLAMINOETHYL ESTER METHYL BROMIDE see VBKOOO... [Pg.1780]

The following acids are formed in similar manner and yield by hydrolysis of the corresponding nitriles (p. 252) a-phenylvaleric acid, m.p. 51° and a-phenyl-y-methylvaleric acid, m.p. 78-79°. [Pg.259]

Amylbenzene (pentylbenzene) is first oxidized to 5-phenylvaleric acid and later transformed, by -degradation and dehydrogenation, to trans-cinnamic acid in high yields by Cellulomonas galba (equation 183) [1053]. [Pg.107]

R = Ph, R = Et) was carried out by hydrolysis in the presence of LiOOH. As a result, (R)-3-phenylvaleric acid 54 was obtained in a highly enantioenriched forra In addition, the sugar template 55 was recovered almost quantitatively. [Pg.1040]


See other pages where Phenylvaleric acids is mentioned: [Pg.53]    [Pg.60]    [Pg.2420]    [Pg.67]    [Pg.36]    [Pg.60]    [Pg.87]    [Pg.89]    [Pg.68]    [Pg.116]    [Pg.171]    [Pg.53]    [Pg.131]    [Pg.286]    [Pg.210]    [Pg.151]    [Pg.174]    [Pg.41]    [Pg.2420]    [Pg.97]    [Pg.1416]    [Pg.311]    [Pg.16]    [Pg.60]    [Pg.303]   
See also in sourсe #XX -- [ Pg.35 , Pg.97 ]

See also in sourсe #XX -- [ Pg.35 , Pg.97 ]

See also in sourсe #XX -- [ Pg.35 , Pg.97 ]

See also in sourсe #XX -- [ Pg.35 , Pg.97 ]

See also in sourсe #XX -- [ Pg.35 , Pg.97 ]




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A-Phenylvaleric acid

Phenylvaleric Acid and Cognate Acids

Y-phenylvaleric acid

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