Hydroxyphenyl benzene sulfonate

IGTS8 or simply IGTS8. The metabolic pathway in Rhodococcus sp. IGTS8 was delineated in the early 1990s [62], The pathway consists of four enzymes. DBT is converted to 2-hydroxybiphenyl (HBP) and sulfite via a 4-step pathway and the following intermediates DBT sulfoxide (dibenzothiophene-5-oxide, DBTO), DBT sulfone (dibenzothiophene-5,5-dioxide, DBT02) and hydroxyphenyl benzene sulfonate (phenol-phenyl sulfinate, HBPSi). 

Subcloning of the gene cluster into E. coli [43,136], Pseudomonas [146] and other organisms has been reported. The genes were subcloned independently and expressed in E. coli MZ1 under control of the inducible lambda pL promoter with a lambda ell ribosomal binding site. As a result, the dszC gene has been linked to conversion of DBT to DBT-sulfone [145], dszA to conversion of DBT sulfone to hydroxyphenyl benzene... 

EthenediyI)bis[5-[ 4-hydroxyphenyl)azd benzene sulfonic acid], 9CL C.I. Direct yellow 4... 

B) A mixture of 2.4 parts of 1 acetyl-4-(4-hydroxyphenyl)piperazine, 0.4 part of sodium hydride dispersion 78% 75 parts of dimethylsulfoxide and 22.5 parts of benzene is stirred for one hour at 40°C. Then there are added 4.2 parts of cis-2-(2,4-dichlorophenyl)-2-(1 H-imidazol-1 -ylmethyl)-1,3-dioxolan-4-ylmethyl methane sulfonate and stirring is continued overnight at 100°C. The reaction mixture Is cooled and diluted with water. The product is extracted with 1,1 -oxybisethane. The extract is dried, filtered and evaporated. The residue Is crystallized from 4-methyl-2-pentanone. The product is filtered off and dried, yielding 3.2 parts (59%) of cis-1-acetyl-4-[2-(2,4-dichlorophenyl)-2-(1 H-imidazol-1-ylmethyl)-13-di-oxolan-4-ylmethoxy] phenyl] piperazine MP 146°C. 

The steric requirements of the enhanced interaction between arylsulfinyl or arylsulfonyl groups and the benzene ring in bis(4-hydroxyphenyl)sulfoxides or sulfones were examined by Oae and colleagues through the introduction of methyl groups in two or four of the positions ortho to SO or S02. As in the work described earlier for S02Me, effective values for the combined influence of the substituents o (obs.) were determined and compared with o (calc.) computed on the basis of strict additivity of substituent effects on the dissociation... 

The reaction of bis(4-chlorophenyl)sulfone with the anhydrous dialkali salt of a,a -bis(4-hydroxyphenyl)-p-diisopropyl benzene, which is dissolved in an aprotic solvent, leads to a new heat-resistant polyarylsulfone. A general discussion of monomer and polymer preparation is given as well as physical and mechanical properties of this polyarylsulfone. 

Benzene-4-sulfonic acid, l-hydroxy-2-(2-hydroxy-6-suIfo-l-naphthylazo)-6-(2-hydroxy-l-naphthylazo)-metallochromic indicator, 556 Benzimidazole, 2-(o-hydroxyphenyl)-raercury determination, 532 Betrzoic acid complexes linkage isomers, 186 a-Benzoin oxime in gravimetry, 530 Benzothiazole, hydroxy-in gravimetry, 531 Benzothiazole, mercapto-in gravimetry, 534 Benzothiazole, 2-mercapto-cadmium complexes liquid-liquid extraction, 547 Benzoxazole, 2-(o-hydroxyphenyl)-cadmium determination, 531 Benzylamine, a-methyl-Al,7V-dimethyl-complexes chirality, 199 Berry pseudorotation, 39 Beryllium analysis, 523... 

Aromatic hb polyethers were prepared from equimolar + bs polycondensations by Kricheldorf et al. [67-69], Possum et al. [70], and Long et al. [71, 72], The Kricheldorf group studied polycondensations l,l,l-tris(4.hydroxyphenyl)ethane or its trimethylsilylderivative with 4,4 -bis(4-fluorophenyl sulfone) and with 1,4-bis(4-fluorobenzoyl)benzene [68] in moderately concentrated solutions. The MALDI-TOF mass spectra revealed a high fraction of cyclic species, and even polyethers containing two cyclic elements were detectable in the mass range above... 

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