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Hydroxy benzoate

In this type of cleavage reaction, it appears that the axial benzoate is the preferred product. If water is excluded from the reaction, a bromo benzoate is obtained.The highly oxidizing medium of 2,2 -bipyridinium chlorochromate and MCPBA in CH2CI2 at rt for 36 h effects a similar conversion of benzylidene acetals to hydroxy benzoates in 25-72% yield. ... [Pg.220]

Ethy I-p-hydroxy benzoate Cyclohexyl bromide 3-(2 -Methylplperidino)propyl chloride... [Pg.410]

Then, 1.3 ml of glycerine are mixed with 0.5 ml of a 25% solution of methyl p-hydroxy-benzoate in ethanol, and 50 ml of distilled water are added. To the produced mixture are, after sterile filtration, added 10 ml of the stock solution 1, 2.5 ml of the stock solution 2 and 10 ml of the stock solution 3, after which 3.0 ml of sterile 0.1 N sodium hydroxide are added, and the mixture is filled up with sterile distilled water to a volume of 100 ml. The insulin will be precipitated amorphously by the admixture of the sodium hydroxide, and the produced suspension acquires the pH value of 7. It will contain approximately 1 gamma zinc per insulin unit. [Pg.822]

Rhizobia. Taxa belonging to both the genera Rhizobium and Bradyrhizobium are capable of degrading simple aromatic compounds including benzoate (Chen et al. 1984) and 4-hydroxy-benzoate (Parke and Omston 1986 Parke et al. 1991). It has been shown that 4-hydroxyben-zoate hydroxylase is required for the transport of 4-hydroxybenzoate into the cell (Wong et al. 1994). In strains of Rhizobium trifolium, the metabolism of benzoate involves either 3,4-dihydroxybenzoate (protocatechuate) 3,4-dioxygenase (Chen et al. 1984), or catechol... [Pg.66]

Hydroxybenzoates can nndergo hydroxylation with or withont concomitant loss of CO2. For example, salicylate —> catechol + CO2 (salicylate-l-hydroxylase) (Fignre 3.9a) (White-Stevens et al. 1972) and 4-hydroxybenzoate —> 1,4-dihydroxybenzene + CO2 [(4-hydroxy-benzoate 1-hydroxylase (decarboxylating)] in Candida parapsilosis (Fignre 3.9b) (Eppink etal. 1997). [Pg.108]

Figure 1. Formation of carbonyl groups in 0.1 mm PP films as a function of irradiation time in Xenotest 150 (13). (UVA)2-(2 -hydroxy-3, 5 -di-tert-butylphenyl)-5-chloro-benzotriazole (Ni-Comp) Nickelf2,2 -thiobis-(4-tert-octylphenolate)]-n-butyl-amine (Benzoate) 2,4-di-tert-butylphenyl-3,5-di-tert-buty 1-4-hydroxy-benzoate (HALS) Bis-(2,2,6,6-tetramethyl-piperidinyl-4)sebacate. Figure 1. Formation of carbonyl groups in 0.1 mm PP films as a function of irradiation time in Xenotest 150 (13). (UVA)2-(2 -hydroxy-3, 5 -di-tert-butylphenyl)-5-chloro-benzotriazole (Ni-Comp) Nickelf2,2 -thiobis-(4-tert-octylphenolate)]-n-butyl-amine (Benzoate) 2,4-di-tert-butylphenyl-3,5-di-tert-buty 1-4-hydroxy-benzoate (HALS) Bis-(2,2,6,6-tetramethyl-piperidinyl-4)sebacate.
The dehalogenases (EC 3.8.1), a subclass of the hydrolases that act on the halide bonds in C-halide compounds, catalyze reactions of hydrolytic de-halogenation (Fig. 11.3,a), i.e., the replacement of a halide atom at a sp3 C-atom with a OH group. Exceptions include thyroxine deiodinase (EC 3.8.1.4), which catalyzes reductive deiodination on phenyl rings, and the bacterial 4-chlorobenzoate dehalogenase (EC 3.8.1.6), which forms 4-hydroxy-benzoate. [Pg.693]

PRP-XlOO Hamilton 1-13 100 Moderate SAX CMS Styrenic /7-Hydroxy- benzoate ... [Pg.225]

The conversion of benzylidene and ethylidene derivatives into hydroxy benzoates and hydroxy acetates, respectively, following irradiation in acetone, and preferably in the presence of oxygen, was discussed by Binkley. Irradiation is carried out at a shorter wavelength (compared to 2-nitrobenzylidene derivatives) and the yields are significantly lower. [Pg.189]

This enzyme [EC 1.14.13.23], also called 3-hydroxyben-zoate 4-hydroxylase, catalyzes the reaction of 3-hydroxy-benzoate with NADPH and dioxygen to produce 3,4-dihydroxybenzoate, NADP+, and water. FAD is used as a cofactor and the enzyme can also use analogs of 3-hydroxybenzoate substituted in the 2,4,5, and 6 positions as substrates. [Pg.353]

This enzyme [EC 1.14.13.24], also known as 3-hydroxy-benzoate 6-hydroxylase, catalyzes the reaction of 3-hy-droxybenzoate with NADH and dioxygen to produce 2,5-dihydroxybenzoate, NAD+, and water. NADPH can also be used as a substrate, although not as effectively... [Pg.353]

Butylparaben, Butyl 4-hydroxy benzoate Merck, Germany Preservative... [Pg.113]

Figure 5.24 The homologous series of alkyl 2-hydroxy-benzoates... Figure 5.24 The homologous series of alkyl 2-hydroxy-benzoates...
Ethyl -hydroxy benzoates.1 The dianions (LDA) of 1,3-diketones react with 1 to give ethyl 5,7-diketo-3-octenoates in 40-55% yield by an addition-elimination process. The products on reaction with dilute sodium ethoxide undergo dehydro-cyclization to afford ethyl p-hydroxybenzoates in 60-80% yield. [Pg.130]

Ethyl 4-hydroxyben-zoate 4-hydroxyben-zoic acid ehyl ester ethyl p-hydroxy benzoate carboxyphenol Solid... [Pg.1060]

Methyl 4-hydroxy benzoate 4-hydroxy benzoic acid, methyl ester methyl p-hydroxybenzoate... [Pg.1060]

P-Hy droxyanopteryl-11 a, 12a-ditiglate 7P-Hydroxyanopteryl-l la (4 -hydroxy) benzoate-12a-tiglate 7-P-Hydroxyanopteryl-11 a-(E)-4 -hydroxy-2 -methylbut-2 -enoate 12a-tiglate... [Pg.43]

N1 RN 5-alpha-ANQR05TAN-3-GNE, 17-beta-HYDROXY- BENZOATE X057-07-4... [Pg.58]


See other pages where Hydroxy benzoate is mentioned: [Pg.103]    [Pg.86]    [Pg.410]    [Pg.89]    [Pg.475]    [Pg.511]    [Pg.514]    [Pg.719]    [Pg.149]    [Pg.105]    [Pg.305]    [Pg.666]    [Pg.190]    [Pg.326]    [Pg.140]    [Pg.106]    [Pg.733]    [Pg.179]    [Pg.179]    [Pg.623]    [Pg.658]    [Pg.665]    [Pg.245]    [Pg.18]    [Pg.34]    [Pg.250]    [Pg.614]    [Pg.295]    [Pg.198]    [Pg.237]   


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4- Hydroxy-mercuri-benzoate

Alkyl hydroxy benzoate

Ethyl p-hydroxy benzoate

Hydroxy benzoate stabilizers

Methyl 2-hydroxy benzoate, hydrolysis

Methyl 4-hydroxy-3,6-dimethyl benzoate

P-Hydroxy-benzoates

Para-Hydroxy benzoate

Para-hydroxy benzoate hydroxylase

Para-hydroxy benzoate hydroxylase PHBH)

Phenols hydroxy benzoates

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