Phenylmercury acetate

Heck obtained 4-phenyI-3-acetoxy-l-butene (126) by the reaction of butadiene, phenylmercury acetate, and lead tetraacetate in the presence of a catalytic amount of Pd(OAc)2 (112) ... 

Kimura and Miller [28] collected and determined vapours produced by the decomposition in soil of phenyl alkylmercury compounds. They found that the air above soil containing phenylmercury acetate contained mercury vapour and traces of phenylmercury acetate. 

Total mercury is determined in soils containing phenylmercury acetate and or ethylmercury acetate using the method described by Polley and Miller [31]. Total mercury is determined in soils containing methylmercury chloride and methylmercury dicyanamide by the method described by Kimura and Miller [32], Kimura and Miller [30] present chemical data on the nature of residual mercurials in soil and in the atmosphere surrounding the treated soil to further elucidate the phenomena of degradation in soil. 

They showed that metallic mercury vapour and trace amounts of phenylmercury acetate were present in the air surrounding phenylmercury acetate-treated soil. About equal amounts of the vapours... 

Table 13.9 Analyses of phenylmercury acetate (PMA)-treated soil... 

Phenthoate phosphoro organic, phosphoro dithioate Phenylmercury acetate organic mercury 2-Phenylphenol (other) diphenyl Phorate phosphoro organic, phosphoro dithioate Phosalone phosphoro organic, phosphoro dithioate, benzoxazole... 

PHENOMERCURIC ACETATE PHENYLMERCURI-ACETATE PHENYL MERCURIC ACETATE PHENYL-MERCURY ACETATE PHENYLQUECK-SILBERACETAT (GERMAN) PHIX PMA PMAC PMACETATE PMAL PMAS PURASAN-SC-10 PURATURF 10 QUICKSAN RCRA WASTE NUMBER P092 SANITIZED SPG SC-110 SCUTL ... 

In a study of six mercury compounds, mercury chloride, mercury nitrate, sodium ethylmercurithi-osalicylate, methyl mercury chloride, mercury acetate and phenylmercury acetate in MDCK cells, LLC-PKl cells and human primary proximal tubular cells (hPTC) and non-renal cell lines (SAOS and Hep G2) it was found that all mercury compounds were toxic to all cell types as evidenced by neutral red uptake, thymidine incorporation and the MTT assay [189]. However, sodium ethylmercurithiosalicylate, methyl mercury chloride and phenylmercury acetate were one order of magnitude more toxic than the other compounds. In addition the GSH synthesis inhibitor L-buthionine sulfoximine (BSO) potentiated the toxicity of all mercury compounds [189]. In a study using primary rabbit proximal tubular cells it was also shown that methyl mercury chloride is more toxic than mercury chloride [190]. Differences in the extent and rate of metal uptake were also evident. Maximum cellular uptake of Hg " occurred within 6-24 hr after exposure and was not concentration-dependent, whereas maximum uptake of CHgHg" occurred within 3 hr of exposure and was concentration- dependent [190]. 

Chemoselective cleavage of anomeric thioacetates to the thioaldose in the presence of O-acetyl groups is possible under various conditions, e. g., methanolic sodium methoxide at low temperatures [121], phenylmercury acetate followed by demercuration [122], 2-aminoethanethi-ol [123], or hydrazinium acetate [124], and these methods have therefore often been used in the synthesis of thiooligosaccharides (O Sect. 3.2.1). As mentioned, glycosyl thioacetates can also be prepared from the 2-acetoxyglycal derivative (see Scheme 24). 

Acetato-O)phenylmercury acetoxyphenylmercury Gallotox Liquiphene phenylmercury acetate PMA PMAC PMAS. 

Synonym(s) Mercury, dimethyl methyl mercury0 (Acetato)phenylmercury acetoxyphenylmercury phenylmercury acetate0 acetoxyphenylmercury mercury (II) acetate, phenyl- mercury, (acetato)phenyl- phenylmercury acetate phenylmercuriacetate... 

Emergency Planning and Notification-Extremely Hazardous Substances and Their Threshold Planning Quantities mercuric acetate mercuric chloride mercuric oxide phenylmercury acetate 500/10,000 pounds 500/10,000 pounds 500/10,000 pounds 500/10,000 pounds 40 CFR 355, App. A EPA 1995j... 

CaClj, 4H2O MgS04, 7H2O Potassium phtalate Lauryl sulphate Phenylmercury acetate... 

The basic compound of this group is phenylmercury acetate (12), one of the earnest known organic mercury compounds. Many processes have been developed for its preparation. Phenylmercury derivatives can be obtained from benzene reacted with mercury acetate at about 100°C. The reaction temperature can be reduced with catalysts, for example boron trifluoride (Dimroth, 1926 Kobe and Lueth, 1942). 

Phenylmercury acetate is a white crystalline compound, its solubility in water is... 

Phenylmercury acetate is excellent for seed treatment and, in addition, is an eradicant leaf fungicide against apple scab (prebloom period) and against the fungal diseases of rice (Frohberger, 1969). 

Phenylmercury chloride (CjHjHgCl) can be precipitated from the aqueous solution of phenylmercury acetate by the addition of sodium chloride. The active substance can be also prepared directly from aniline by Nesmejanov synthesis. Being only slightly soluble in water, it is less phytotoxic than the acetate. It is used... 

The sensitivity of plants to mercury compounds are different. In general, the fungitoxic concentration does not harm the seeds and bulbs of the plants the therapeutic index of mercury compounds for seed treatment is therefore satisfactory. Potato seed is an exception because it is susceptible to many species. However, only aryl mercury compounds are suitable for foliage application, and these only in the case of certain plants or in certain stages of development. Thus, phenylmercury acetate or chloride are not phytotoxic to apple trees in the prebloom period. Arylmercury compounds are not phytotoxic to the rice plant at all. Phytotoxicity is mainly caused primarily by mercury vapours formed on the reduction of mercury compounds (Hitchcock and Zimmermann, 1957). According to Lee et at. (1973), mercury compounds inhibit the biochemical reactions of the electron transport of photosynthesis, depending on the pH value and on the concentration. 

On the other hand, methoxyalkyl- and phenylmercury compounds are less stable, decomposing into mercury(II) salts and leaving the organism rapidly. A considerably larger amount, about one-third of the total quantity of mercury is excreted in urine, which also indicates a different metabolism. Miller et al., (1960) found that metalmercury could not be detected in any of the organs of the experimental animals only a relatively short time after feeding with phenylmercury acetate. 

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