912-17-4

Usage

General Description

1,2-Ethanediol, 1,2-bis(4-chlorophenyl)-1,2-diphenyl- is a chemical compound that is also commonly known as ethylene glycol dicyclohexyl ether. It is a colorless, odorless liquid that is used as a solvent in various industrial applications, such as in the production of polymers, resins, and paints. It is also used as a heat transfer fluid in industrial processes and as a component in antifreeze and de-icing products. However, it is important to handle this chemical with caution, as it can be harmful if inhaled, ingested, or comes into contact with the skin, and it may cause irritation to the respiratory system and skin.

Upstream product

• 7270-47-5 4-chlorophenylmagnesium iodide 
• 134-81-6 benzil 
• 108-86-1 bromobenzene 
• 134-85-0 4-chlorobenzophenone 
• 64-19-7 acetic acid 
• 64-17-5 ethanol 
• 60-29-7 diethyl ether 
• 7553-56-2 iodine 
• 71-43-2 benzene 
• 7647-01-0 hydrogenchloride 
• 108-88-3 toluene 
• 37506-25-5 trimethyl(1-methyl-2-propenyl)stannane 
• 762-73-2 trimethyl(allyl)stannane 
• 17314-40-8 3-Methyl-2-butenyl-trimethylstannane 

Downstream Products

• 21015-56-5 9,10-bis(4-chlorolphenyl)phenanthrene 
• 102145-97-1 1,2-Bis-(4-chloro-phenyl)-2,2-diphenyl-ethanone 
• 134-85-0 4-chlorobenzophenone 
• 119-56-2 (4-chlorophenyl)phenylmethanol 
• 69361-54-2 ((4-chlorophenyl)methylene)dibenzene 
• 74-11-3 para-chlorobenzoic acid 

Relevant academic research and scientific papers

Tunable System for Electrochemical Reduction of Ketones and Phthalimides

Herein, we report an efficient, tunable system for electrochemical reduction of ketones and phthalimides at room temperature without the need for stoichiometric external reductants. By utilizing NaN3 as the electrolyte and graphite felt as both the cathode and the anode, we were able to selectively reduce the carbonyl groups of the substrates to alcohols, pinacols, or methylene groups by judiciously choosing the solvent and an acidic additive. The reaction conditions were compatible with a diverse array of functional groups, and phthalimides could undergo one-pot reductive cyclization to afford products with indolizidine scaffolds. Mechanistic studies showed that the reactions involved electron, proton, and hydrogen atom transfers. Importantly, an N3/HN3 cycle operated as a hydrogen atom shuttle, which was critical for reduction of the carbonyl groups to methylene groups.

Surface modification of CdS quantum dots with fluorinated thiophenol

CdS nanocrystallites prepared by capping with pentafluorothiophenol, 2,3,5,6-tetrafluorothiophenol or 4-fluorothiophenol are characterized as quantum dots by TEM, FTIR, NMR, UV-VIS and fluorescence spectroscopy. The crystalline size tends to increase with an increase in the number of fluorine atoms in the capping molecules while maintaining high solubility in organic solvents, with solubility in alcohols depending on the number of fluorine atoms in the capping molecules. Pentafluorophenyl-capped CdS nanocrystallites have the highest solubilities in alcohols, and exhibit quantum dot photocatalysis in methanol, leading to the efficient two-electron transfer photoreduction under visible-light irradiation.

Semiconductor Photocatalysis: Size Control of Surface-Capped CdS Nanocrystallites and the Quantum Size Effect in Their Photocatalysis

Size-controlled CdS nanocrystallites were prepared by using thiophenol or hexanethiol as a capping reagent by controlling the ratio of Cd2+ to bis(trimethylsilyl) sulfide (S(TMS)2) as a source of the sulfide ion in reversed micelles.Their solubility and photocatalysis were examined.A series of size-controlled phenyl-capped CdS nanocrystallites catalyze the photoreduction of aromatic ketones in the presence of triethylamine as an electron donor under visible-light irradiation.The photocatalytic activity is affected by the particle size, i.e., the reducing power of the photogenerated electron on CdS nanocrystallites toward the ketones increases with decreasing the particle size.The enhancement of photocatalytic activity observed by reducing the particle size should be ascribed to not only a negative shift of the conduction band edge, but also suppression of the formation of surface defects.

Semiconductor Photocatalysis: Effect of Light Intensity on Nanoscale CdS-Catalyzed Photolysis of Organic Substrates

The relationship between light intensity and product distribution in semiconductor photocatalysis was investigated by using nanoscale CdS microcrystallites (CdS-0) as photocatalysts, triethylamine (TEA) as the electron donor, and either aromatic ketones, electron-deficient alkenes, or 1-benzylnicotinamide (BNA+) as substrates.In the case of the ketones and BNA+, the yield of their respective one-electron reduction products, pinacols and the dimer, (BNA)2, increases with decreasing light intensity.When alkenes are employed in the CdS-0 system, cis-trans photoisomerization always occur regardless of the light intensity.The kinetics for the photocatalysis of the alkanes and the measuement of the inital formation rate of active lattice Cd atoms (Cd0) (which act as catalytic sites for two-electron-transfer reductions) reveal that Cd0 formation is proportional to the square of the relative light intensity, Ir2.The chemoselectivity in the photocatalysis using nanoscale CdS should be affected by the quantity of the Cd0, whose formation strongly depends on the light intensity.

Semiconductor Photocatalysis: Visible Light Induced Photoreduction of Aromatic Ketones and Electron-deficient Alkenes catalysed by Quantised Cadmium Sulfide

Colloidal CdS suspensions (CdS-0) prepared at 0 deg C from methanolic Cd(ClO4)2 and Na2S solutions consist of quantised CdS microcrystallites (2-5 nm) and their loose aggregates, which catalyse the effective photoreduction of aromatic ketones and electron-deficient alkenes with triethylamine as electron donor.Under visible light induced photolysis, the methanolic CdS-0 suspension becomes brown owing to the reduction of lattice Cd2+ to Cd0, leading to the effective formation of alcohols from ketones, and dihydro compounds from alkenes.With the reduction potential2-) in the CdS-0 system, however, suppresses the formation of lattice Cd0, inducing one-electron transfer photoreductions which result in the exclusive formation of pinacols and 1,2,3,4-tetra(methoxycarbonyl)butane from the respective ketones and dimethyl maleate.The relationship between the two-electron reductions and the photogenerated lattice Cd0 is discussed in terms of the regulation of semiconductor photocatalysis.

Visible-Light-Induced Two-Electron-Transfer Photoreductions on CdS: Effeects of Morphology

Freshly prepared CdS suspensions (CdS-0) consisting of quantized particles and their loose aggregation catalyze photoreductions of aromatic ketones and olefins in methanol under visible light irradiation using triethylamine as sacrificial electron donor, yielding alcohols and dihydro compounds, respectively, which are more selective than photocatalysis of commercially available crystalline CdS (Aldrich) (CdS-Ald).Deuterium incorporation experiments in photolysis of dimethyl maleate in methanol-O-D revealed that CdS-0 catalyzes sequental two-electron-transfer photoreduction, affording dideuterated dimethyl succinate, while CdS-Ald induces both photoreduction and photoisomerization through disproportionation between one-electron-transfer-reduction intermediates, yielding much trideuterated dimethyl succinate and monodeuterated dimethyl fumarate and maleate.

Novel reduction of carbonyl compounds with Al/NH3/halide under irradiation of ultrasonic wave

Various carbonyl compounds, such as benzophenones and acetophenones, were reduced by Al/NH3/halide under ultrasonic wave irradiation to give the corresponding monohydric alcohols and/or pinacols in satisfactory yields. The addition of inorganic halides improved the selectivity in the formation of monohydric alcohols and pinacols.

Nonmetallised CdS-catalised Photoreduction of Aromatic Ketones to Alcohols and/or Pinacols

In acatonitrile containing triethylamine as a sacrificial electron donor, non-metallized CdS shows photocatalytic activity for reduction of benzophenone derivatives whose reduction potentials are larger than -1.90 V vs. standard calomel electrode (SCE), giving alcohols and/or pinacols under visible light irradiation.

Photoinduced Allylation of Aromatic Carbonyl Compounds by Allylic Stannanes

irradiation of aromatic carbonyl compounds and allyl-, 2-methyl-2-propenyl, or 3-methyl-2-butenyltrimethylstannanes in acetonitrile afforded δ,γ-unsaturated alcohols as major product.A photoinduced electron transfer mechanism is proposed for the allylations.

Process for the preparation of pinacols

An improvement in a process for the preparation of a pinacol of the formula STR1 wherein R1 and R2 are identical or different and represent optionally substituted aliphatic, cycloaliphatic, araliphatic or an aromatic hydrocarbon radical by reducing a ketone of the formula STR2 wherein R1 and R2 have the abovementioned meanings with a base metal, the improvement comprising carrying out the reduction in the presence of an organic halogen compound and in the presence of a phosphoric acid amide, phosphoric acid ester and/or carboxylic acid amide.