20244-21-7

Basic information

• Product Name: sodium pyrocatecholate
• Synonyms: sodium pyrocatecholate;1,2-Benzenediol/sodium,(1:x) salt
• CAS NO: 20244-21-7
• Molecular Formula: C₆H₄O₂*2Na
• Molecular Weight: 176.10197
• EINECS: 243-637-1
• Mol File: 20244-21-7.mol

Chemical Properties

• Boiling Point: 245.5°Cat760mmHg
• Flash Point: 137.2°C
• Appearance: /
• Density: g/cm³
• Vapor Pressure: 0.0183mmHg at 25°C
• CAS DataBase Reference: sodium pyrocatecholate(CAS DataBase Reference)
• NIST Chemistry Reference: sodium pyrocatecholate(20244-21-7)
• EPA Substance Registry System: sodium pyrocatecholate(20244-21-7)

Safety Data

• Hazardous Substances Data: 20244-21-7(Hazardous Substances Data)

Usage

InChI:InChI=1/C6H6O2.Na/c7-5-3-1-2-4-6(5)8;/h1-4,7-8H;/q;+1/p-1

Upstream product

• 120-80-9 benzene-1,2-diol 

Downstream Products

• 20367-35-5 1,2-dibutoxybenzene 
• 34678-64-3 1,2-bis(2-methylpropyloxy)benzene 
• 142947-21-5 1,2-bis(pentyloxy)benzene 
• 55403-98-0 1,2-diisopentoxybenzene 
• 94259-20-8 1,2-dihexyloxybenzene 
• 4074-55-9 1,3,2-benzdioxathiole-2,2-dioxide 
• 91-16-7 1,2-dimethoxybenzene 
• 24716-01-6 2-benzyl-1,2,3,4,4a,10a-hexahydro-benzo[5,6][1,4]dioxino[2,3-c]pyridine 
• 262-12-4 dioxin 
• 108-90-7 chlorobenzene 
• 274-09-9 Methylenedioxybenzene 
• 13522-31-1 O-2-acetoxyphenyl N,N-dimethylthionocarbamate 
• 13522-30-0 1,2-Bis-(N,N-dimethyl-thiocarbamoyloxy)-benzol 
• 120-80-9 benzene-1,2-diol 

Relevant articles and documents

CATALYSTS FOR EFFICIENT Z-SELECTIVE METATHESIS

The present application provides, among other things, compounds and methods for metathesis reactions. In some embodiments, provided compounds promote highly efficient and highly Z-selective metathesis. In some embodiments, provided compounds and methods are particularly useful for producing allyl alcohols. In some embodiments, provided compounds have the structure of formula I. In some embodiments, provided compounds comprise ruthenium, and a ligand bonded to ruthenium through a sulfur atom.

CATALYSTS FOR EFFICIENT Z-SELECTIVE METATHESIS

The present application provides, among other things, compounds and methods for metathesis reactions. In some embodiments, provided compounds promote highly efficient and highly Z-selective metathesis. In some embodiments, provided compounds and methods are particularly useful for producing allyl alcohols. In some embodiments, provided compounds have the structure of formula I. In some embodiments, provided compounds comprise ruthenium, and a ligand bonded to ruthenium through a sulfur atom.

Readily accessible and easily modifiable Ru-based catalysts for efficient and Z-selective ring-opening metathesis polymerization and ring-opening/cross- metathesis

Rationally designed Ru-based catalysts for efficient Z-selective olefin metathesis are featured. The new complexes contain a dithiolate ligand and can be accessed in a single step from commercially available precursors in 68-82% yield. High efficiency and exceptional Z selectivity (93:7 to >98:2 Z:E) were achieved in ring-opening metathesis polymerization (ROMP) and ring-opening/cross-metathesis (ROCM) processes; the transformations typically proceed at 22 C and are operationally simple to perform. Complete conversion was observed with catalyst loadings as low as 0.002 mol %, and turnover numbers of up to 43 000 were achieved without rigorous substrate purification or deoxygenation protocols. X-ray data and density functional theory computations provide support for key design features and shed light on mechanistic attributes.

PROCESS FOR THE RECOVERY OF PHENOL AND BIPHENOLS

A process is described for the recovery of phenol and biphenols from their homogeneous mixtures containing benzene, sulfolane and water, which is based on the use of an alkaline solution and benzene for the separation of biphenols from sulfolane, after removing the benzene, H2O and phenol contained in the reaction effluent. The process allows the recovery of phenol and biphenol by-products dissolved in sulfolane, directly obtaining the purified solvent containing the benzene necessary for the feeding to the reactor for the direct oxidation of benzene, as well as the biphenols dissolved in water and pure phenol.

Process for the recovery of phenol and biphenols

A process is described for the recovery of phenol and biphenols from their homogeneous mixtures containing benzene, sulfolane and water, which is based on the use of an alkaline solution and benzene for the separation of biphenols from sulfolane, after removing the benzene, H2O and phenol contained in the reaction effluent. The process allows the recovery of phenol and biphenol by-products dissolved in sulfolane, directly obtaining the purified solvent containing the benzene necessary for the feeding to the reactor for the direct oxidation of benzene, as well as the biphenols dissolved in water and pure phenol.