66291-82-5

Basic information

• Product Name: (Z)-1,1,4,4-tetrakis(4-chlorophenyl)-2,3-dichloro-2-butene
• Synonyms: (Z)-1,1,4,4-tetrakis(4-chlorophenyl)-2,3-dichloro-2-butene
• CAS NO: 66291-82-5
• Molecular Weight: 567.169
• Mol File: 66291-82-5.mol

Chemical Properties

• CAS DataBase Reference: (Z)-1,1,4,4-tetrakis(4-chlorophenyl)-2,3-dichloro-2-butene(CAS DataBase Reference)
• NIST Chemistry Reference: (Z)-1,1,4,4-tetrakis(4-chlorophenyl)-2,3-dichloro-2-butene(66291-82-5)
• EPA Substance Registry System: (Z)-1,1,4,4-tetrakis(4-chlorophenyl)-2,3-dichloro-2-butene(66291-82-5)

Safety Data

• Hazardous Substances Data: 66291-82-5(Hazardous Substances Data)

Upstream product

• 60-29-7 diethyl ether 
• 50-29-3 p,p'-DDT 
• 35166-78-0 cyclohexylmethyl magnesium bromide 

Downstream Products

• 64434-53-3 1,1,4,4-tetrakis(4-chlorophenyl)buta-1,2,3-triene 

Relevant articles and documents

Recycled catalysis of a hydrophobic vitamin B12 in an ionic liquid

Recycled use of a hydrophobic vitamin B12, heptamethyl co-byrinate perchlorate, in the dechlorination of 1,1-bis(4-chlorophenyl)-2,2,2- trichloroethane (DDT) with a visible light irradiation system containing a [Ru(II)(bpy)3]Cl2 photosensitizer was achieved using an ionic liquid as reaction medium. Copyright

Enhanced photocatalytic activity of a B12-based catalyst co-photosensitized by TiO2 and Ru(II) towards dechlorination

A novel hybrid photocatalyst denoted as B12-TiO2-Ru(ii) was prepared by co-immobilizing a B12 derivative and trisbipyridine ruthenium (Ru(bpy)32+) on the surface of a mesoporous anatase TiO2 microspheres and was characterized by DRS, XRD, SEM and BET et al. By using the hybrid photocatalyst, DDT was completely didechlorinated and a small part of tridechlorinated product was also detected in the presence of TEOA only after 30 min of visible light irradiation. Under simulated sunlight, the hybrid exhibited a significantly enhanced photocatalytic activity for dechlorination compared with B12-TiO2 under the same condition or itself under visible light irradiation due to the additivity in the contribution of UV and visible part of the sunlight to the electron transfer. In addition, this hybrid catalyst can be easily reused without loss of catalytic efficiency. This is the first report on a B12-based photocatalyst co-sensitized by two photosensitizers with wide spectral response.

Significant enhancement of visible light photocatalytic activity of the hybrid B12-PIL/rGO in the presence of Ru(bpy)32+ for DDT dehalogenation

A new B12-PIL/rGO hybrid was prepared successfully through immobilizing a B12 derivative on the surface of poly(ionic liquid) (PIL)-modified reduced graphene oxide (rGO) by electrostatic attraction and π-π stacking attraction among the different components. The hybrid catalyst showed an enhanced photocatalytic activity in the presence of Ru(bpy)32+ for 1,1-bis(4-chlorophenyl)-2,2,2-trichloroethane (DDT) dechlorination with ～100% conversion. Especially, the yield of didechlorinated products could reach 78% after 1 h of visible light irradiation, which should be attributed to a synergistic effect of B12, rGO and PIL in B12-PIL/rGO, including their respective catalytic performance, the excellent electron transport of rGO and the concentration of DDT and 1,1-bis(4-chlorophenyl)-2,2-dichloroethane (DDD) on the surface of B12-PIL/rGO. Furthermore, the hybrid catalyst was easily recycled for use without obvious loss of catalytic activity.

Enhanced reactivity of hydrophobic vitamin B12 towards the dechlorination of DDT in ionic liquid

The electrolytic reductive dechlorination of 1,1-bis(p-chlorophenyl)-2,2,2- trichloroethane (DDT) in the ionic liquid (IL) 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4]) in the presence of a cobalamin derivative afforded 1,1′-(ethylidene)bis(4-chlorobenzene) (DDO) and 1,1′-(ethenylidene)bis(4-chlorobenzene) (DDNU) with 1,1′-(2- chloroethylidene)bis(4-chlorobenzene) (DDMS); the enhanced reactivity, as well as the recyclability of the cobalamin derivative catalyst in IL, makes the present system more efficient for the development of "green" technologies. The Royal Society of Chemistry.

Hydrophobic vitamin B12· part 19: Electroorganic reaction of DDT mediated by hydrophobic vitamin B12

The controlled-potential electrolysis of 1,1-bis(4-chlorophenyl)-2,2,2- trichloroethane (DDT) was carried out at -1.4 V vs. Ag-AgCl in the presence of a hydrophobic vitamin B12, heptamethyl cobyrinate perchlorate. DDT was dechlorinated to form 1,1-bis(4-chlorophenyl)-2,2-dichloroethane (DDD), 1,1-bis(4-chlorophenyl)-2,2-dichloroethylene (DDE), 1-chloro-2,2-bis(4- chlorophenyl)ethylene (DDMU) and 1,1,4,4-tetrakis(4-chlorophenyl)-2,3-dichloro- 2-butene (TTDB) (E/Z), and quantitative recovery of the catalyst after the electrolysis was confirmed by electronic spectroscopy. A photo-sensitive intermediate having a cobalt-carbon bond formed during the electrolysis was characterized by electronic spectroscopy. A mechanism for the formation of various dechlorinated products was investigated by using deuterium solvents and various spectroscopic measurements such as UV-VIS and the EPR spin-trapping technique.

Organometallic Compounds: Part II - Reaction of Cyclohexylmethylmagnesium Bromide with 1,1,1-Trichloro-2,2-bis(4-substituted-phenyl)ethanes

The reaction of cyclohexylmethylmagnesium bromide (II) with 1,1,1-trichloro-2,2-bis(4-chlorophenyl)- and 1,1,1-trichloro-2,2-bis(4-methoxyphenyl)-ethanes (Ia,b) follows mainly a reduction pathway to give the corresponding dichloroethanes (IIIa,b) and the butenes, 1,1,4,4-tetrakis(4-chlorophenyl)- and 1,1,4,4-tetrakis(4-methoxyphenyl)-2,3-dichlorobut-2-enes (IVa and IVb).However, in the case of Ib, 1,1,4,4-tetrakis(4-methoxyphenyl)-2,2,3,3-tetrachlorobutane (Vb) has also been obtained.Magnesium subiodide does not effect the reduction of I.