Dichloromaleic acid

Dichloromaleic acid, see Pentachlorophenol Dichloromethoxyphenol, see Bifenox Dichloromethylamine, see Methomvl Dichloro-l-methyl-2-benzimidazolinone, see... 

Christenson WR, Davis ME, Berndt WO. 1989. Effect in the rat of the interaction of dichloromaleic acid and carbon tetrachloride on renal and hepatic function. Fundam AppI Toxicol 13 493-499. 

Wozniak, K., He, H., Klinowski, J., Jones, W., and Barr, T. L., ESCA, solid-state NMR, and X-ray diffraction monitor the hydrogen bonding in a complex of 1,8-bis(dimethylamino)naph-thalene with 1,2-dichloromaleic acid, J. Phys. Chem. 99, 14667-14677 (1995). 

Pentachlorophenol produces a wide variety of transformation products including chloranilic acid (2,5-dichloro-3,6-dihydroxy-benzo-l,4-quinone) by hydrolysis and oxidation, a dichlorocyclo-pentanedione by ring contraction, and dichloromaleic acid by cleavage of the aromatic ring (Figure 4.4) (Wong and Crosby 1981). 

The use of ozonolysis to establish the structure of pentamethyl-2//-pyrrole (1) was described earlier (Section II,A,2).16 Treatment of pentachloro-2f/-pyrrole with silver(I) fluoride gave in addition to the fluoride (143), the bis(acid fluoride) of dichloromaleic acid.57 Oxidation of the diamino ester 155 with lead tetraacetate led to the cyanoimine 156, which in turn was cyclized to the pyrimidine 157 (Scheme 54).137... 

Work by Boule et a. (21, 22) and Wong and Crosby (23) have provided information on the photodecomposition products of chlorophe-nols. In the case of pentachlorophenol degradation products included tetrachlorophenols, trichlorophenols, chlorinated dihydroxy benzenes, and nonaromatic fragments such as dichloromaleic acid (23). Other than CO2 which came from photo-mineralization, we did not attempt to identify the products of pentachlorophenol decomposition in our experiments. Boule (22) found that 2,4-dichlorophenol... 

The 4,5-dichloropyridazine-3,6-dione 87 was obtained from the available dichloromaleic acid anhydride 86 (2006T9002). 

An aqueous solution containing pentachlorophenol and exposed to simlight or laboratory UV hght yielded tetrachlorocatechol, tetrachlororesorcinol and tetrachlorohydro-quinone. These compoimds were air-oxidized to chloranil, hydroxyquinones and 2,3-dichloromaleic acid (DCM). Other compoimds identified include a cyclic dichlorodiketone, 2,3,4,6- and 2,3,5,6-tetrachlorphenol and triehlorophenols (Munakata and Kuwahara, 1969 Wong and Crosby, 1981). 

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