1.2- Dichloro-ethene

Kainz, A., Cross, H., Freeman, S., Gescher, A. Chipman, J.K. (1993) Effects of 1,1-dichloro-ethene and some of its metabolites on tlie functional viability of mouse hepatocytes. Fundam. appl. Toxicol., 21, 140-148... 

Halogenated Hydrocarbons. A few halogenated hydrocarbons were studied by the usual procedure, using mixtures in air over the platinum filament. Neither dichlorodifluoromethane (CC12F2) nor 1,1-dichloro-ethene yielded a measurable ion current at temperatures up to 900°C. 1,1,1-Trichloroethane yielded a modest ion current, but the results were erratic and not reproducible. There was some indication that the halogen compounds changed the behavior of the filament. Consequently, no further experiments with halogenated compounds were conducted. This erratic behavior was in contrast with the very reproducible results with hydrocarbons. 

The Diels-Alder reaction of 9,10-dichloro-anthracenes with 1,1-dichloro-ethene gives a mixture of (360) and (361), and an interesting high-temperature reaction of hydrogen sulphide with the 9-halogeno-derivatives of polynuclear aromatic hydrocarbons led to the corresponding sulphide R2S, e.g. (362). 

Propenoic acid, methyl ester, R polymer with 1, 1 -dichloro ethene... 

Cyclopropylchlorocarbene [20] has been generated by UV photolysis (A = 335 nm) of cyclopropylchlorodiazirine [21] frozen in a nitrogen matrix at 12 K (Ho et al., 1989). IR and UV spectra of [20] have been recorded. The reaction of [20] with HCl resulted in the formation of (dichloromethyl)-cyclopropane [22], and annealing of the matrix gave (dicyclopropyl)dichloro-ethene [23]. Subsequent irradiation (A = 450 nm) of the carbene [20] led to its isomerization to 1-chlorocyclobutene [24], which was partialy destroyed to give ethene and chloroacetylene. Ab initio calculations predict the existence of two carbene conformers, but attempts to distinguish them in IR or UV spectra were unsuccessful. 

Synonyms Acetylene dichloride trans-Acetylene dichloride AI3-28786 BRN 1420761 CCRIS 2505 1,2-Dichloroethene ( )-l,2-Dichloroethene trans-Dlchloroethylene l,2- ra/ 5-Dichloro-ethene l,2-trafl5-Dichloroethylene sj/n-Dlchloroethylene Dioform EINECS 205-860-2 NSC 6149 NSC 60512 RCRA waste number U079 UN 1150. 

Iron-catalyzed alkenylation of Grignard reagents was used by Cahiez and Avedissian to prepare the pheromone of Argyroplace Leucotetra in three steps from l,2-( )-dichloro-ethene (Scheme 63). Two successive alkenylation reactions, the first involving a cobalt catalysis, the second an iron catalysis, allow one to obtain the desired product in 45% overall yield. 

The DDT metabolites, 4,4 -DDE (l,l-bis(4-chlorophenyl)-2,2-dichloro-ethene) and 2,4 -DDE are OHS that form MeS02-containing metabolites that persist in biota and humans [4,11,12,15,22,23]. Of particular concern is 3-MeS02-4,4 -DDE which is bioactivated to a reactive metabolite that irreversibly binds in the adrenal cortex of some species [24-27]. CYP1 If hydroxylase activity is perturbed in several species, and thus interference with glucocorticoid synthesis in vivo is possible. Hexachlorobenzene (HCB) is a major OHS that forms HCB methyl sulfide metabolites in HCB-exposed rats [28,29]. However,... 

In order to relieve the strains imposed during activation of a resin it is usual to pre-swell the copolymer with a solvent such as dichloro-ethene (ethylene dichloride) thereby easing greatly the steric resistance to activation of what would otherwise be a collapsed copolymer structure. By and large resin producers do not publicize, understandably, exact details concerning structure enhancement techniques employed during resin manufacture. Suffice it to say that compared with... 

PtCl2N2C,[Pg.291]

Cyclopropane reacted with hexachloroplatinic acid to give 1,1-dichloroplatinacyclobutane which usually forms polymers. Another route to these organoplatinum compounds was the reaction of cyclopropane derivatives with dichloro(ethene)platinum dimer. Treat-... 

Substantial attention has been directed (Section 2.5) to the occurrence of sulfonated sulfur-containing metabolites including sulfones and sulfonates. These include both methylsulfonyl derivatives of PCBs and of 2,2 -bis(4-chlorophenyl)-l,l-dichloro-ethene (DDE) (Janak et al. 1998). These are noted further in Section 7.5.2 in the context of the metabolism of PCBs by seals and polar bears. 

TCE = trichloroethene 1,1-DCE = 1,1-dichloroethene cis-cis-DCE = as-as-l,2-dichloro-ethene trans-trans-DCE = frans-frans-l,2-dichloroethene MCE = chloroethene (vinyl chloride). 

DICHLORO(ETHENE)(WVXW -TETRAETHYL-l,2-ETHANEDIAMINE)PLATINUM(II) AND RELATED COMPLEXES... 

Cl2N2PtC,0H24, Platinum(Il), [W V -bis(l-methy-lethyl)-l,2-ethanediamine)dichloro-(ethene)-, 21 87... 

A mixture of identical cyclobutanes is formed starting with the pure cis- or pure r/ww-l,2-di-substituted alkene. Thus, the addition of cyclopentenone to cis-(Z)- or ran.v-(F )-l, 2-dichloro-ethene affords the same four cu-fused products, although in different relative amounts71. The integrity of the alkene geometry is lost in the course of the reaction due to rotation in the relatively long-lived diradical intermediates (Section 1.6.1.4.2.1.1.). In the adducts, substituents (Y) on the alkene (see I) may be exo or endo and cis or tram with respect to each other. 

Figure 16.2a summarizes the major uses of chlorine. Chlorinated organic compounds, including 1,2-dichloro-ethene and vinyl chloride for the polymer industry, are hugely important. Dichlorine was widely used as a bleach in the paper and pulp industry, but environmental legislations have resulted in changes (Figure 16.2b). Chlorine dioxide, CIO2 (an elemental chlorine-free bleaching agent), is prepared from NaC103 and is favoured over CI2 because it does not produce toxic effluents. ...

Cl2N,PtC,oH24, Platinum(II), [N,N -bis( 1 -methylethyl)-1,2-ethanedi-amine)dichloro(ethene)-, 21 87 Cl2N2PtC,2H2g, Platinum(II) dichloro[N,Af -dime thyl-N,Af -bis( 1 -methyl-ethyl)- 1,2-ethanediamine)(ethene)-, 21 87 dichloro(ethene)(N, Af, N, N -tetraethyl-1,2-ethanediamine)-, 21 86, 87 CbNjPtCjoH, Platinum(U), [(5,5)-Af,Af -bis(I-phenylethyl)-1,2-ethanediamine]-dichloro(ethene)-, 21 87 CI2N2PtC22H32, Platinum(ll), dichloro[(/ ,/ )-M,Nl-dimethyl-AT,Ar -bis( 1 -phenylethyl)-1,2-ethanediamine](ethene)-, 21 87 CI2N4PdC12H30, Palladium(II), [M,M-bis[2-(di-methylamino)ethyl]-Af, N -dimethyl-1,2-ethanediamine]chloro-, chloride,... 

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