Separation of close boiling substituted phenols by dissociation extraction

1981 ◽  
Vol 31 (1) ◽  
pp. 279-284 ◽  
Author(s):  
Vishwas V. Wadekar ◽  
Man Mohan Sharma
Keyword(s):  
Substituted Phenols

Quantitative Structure-Property Relationship (QSPR) Study of the Hydrophobicity of Phenols and 2-(Aryloxy-a-acetyl)-phenoxathiin Derivatives

2008 ◽  
Vol 59 (11) ◽  
Author(s):  
Adrian Beteringhe ◽  
Ana Cristina Radutiu ◽  
Titus Constantinescu ◽  
Luminita Patron ◽  
Alexandru T. Balaban
Keyword(s):  
Water Solubility ◽  
Molecular Descriptors ◽  
Log P ◽  
Structure Property ◽  
Substituted Phenols ◽  
Reverse Phase ◽  
Aromaticity Index ◽  
Structure Property Relationship ◽  
Layer Chromatography ◽  
Energy Of Formation

In a preceding study, the molecular hydrophobicity (RM0) was determined experimentally from reverse-phase thin-layer chromatography data for several substituted phenols and 2-(aryloxy-a-acetyl)-phenoxathiin derivatives, obtained from the corresponding phenoxides and 2-(a-bromoacetyl)-phenoxathiin. QSPR correlations for RM0 were explored using four calculated molecular descriptors: the water solubility parameter (log Sw), log P, the Gibbs energy of formation (DGf), and the aromaticity index (HOMA). Triparametric correlations do not improve substantially the biparametric correlation of RM0 in terms of log Sw and HOMA.

PHENOLS AS INTERMEDIATES IN THE DECOMPOSITION OF PHENOXYACETATES BY AN ARTHROBACTER SPECIES

1967 ◽  
Vol 13 (6) ◽  
pp. 679-690 ◽  
Author(s):  
M. A. Loos ◽  
R. N. Roberts ◽  
M. Alexander
Keyword(s):  
New Technique ◽  
Resting Cells ◽  
Substituted Phenols ◽  
Metabolic Sequence ◽  
A New Technique ◽  
Arthrobacter Species ◽  
High Yields ◽  
Sequential Induction

Decomposition of 2,4-dichlorophenoxyacetate (2,4-D) by a soil arthrobacter was studied using the technique of sequential induction. Compounds oxidized rapidly and without a lag by 2,4-D-grown cells, but slowly or not at all by citrate-grown cells, included 2,4-D, 2- and 4-chlorophenoxyacetate, 3,5-dichloro- and 4-chloro-catechol, catechol, 2,4-dichlorophenol, and 2- and 4-chlorophenol. The manometric data suggested that phenols and catechols were intermediates in the degradation of phenoxyacetates. Resting cells failed to accumulate chlorine-substituted phenols during the metabolism of halogenated phenoxyacetates, apparently because the phenols were oxidized as readily as they were formed. However, 2,4-D-induced cells contained enzymes which acted upon phenoxyacetate and 4-hydroxyphenoxyacetate, but these cells did not metabolize phenol and hydroquinone. Suspensions of such bacteria, but not citrate-grown cells, converted phenoxyacetate and 4-hydroxyphenoxyacetate almost completely to phenol and hydroquinone, respectively. The results indicate that the Arthrobacter sp. degrades 2,4-D via 2,4-dichlorophenol, and 2- and 4-chlorophenoxyacetate via 2- and 4-chlorophenol, respectively. The results also demonstrate a new technique for obtaining high yields of an intermediate in a metabolic sequence.

Three-Step Synthesis of Highly Substituted Phenols from 1,3-Dinitropropanes

Synlett ◽  
2006 ◽  
Vol 2006 (12) ◽  
pp. 1956-1958 ◽  
Author(s):  
Roberto Ballini ◽  
Luciano Barboni ◽  
Guido Giarlo ◽  
Alessandro Palmieri
Keyword(s):  
Substituted Phenols

scholarly journals C—H Activation/Borylation/Oxidation: A One-Pot Unified Route to Meta-Substituted Phenols Bearing Ortho-/Para-Directing Groups.

ChemInform ◽  
2003 ◽  
Vol 34 (44) ◽  
Author(s):  
Robert E. Jr. Maleczka ◽  
Feng Shi ◽  
Daniel Holmes ◽  
Milton R. III Smith
Keyword(s):  
Substituted Phenols ◽  
One Pot
Sign in / Sign up

Export Citation Format

Share Document