Organomercuric compounds

Organomercuric compounds require nucleophilic assistance by soft iodide anions (cf. Section 9.6.3.2.2) for participation in cross-coupling reactions.158 The reaction is useful for aryl-aryl cross-coupling in those cases in which the organomercury species are obtained by direct mercuration of aromatic compounds (38).159... 

Mercury(II) acetate is the starting material to prepare many organomercuric compounds. 

Broders [124] isolated from the nitration products an organomercuric compound to which he ascribed the following formula ... 

In closing, important advances have been performed after 1999 on Hg(II) photocatalysis, especially concerning the highly toxic organomercuric compounds. However, and as said in a previous paper (Botta et al., 2002), it is worthwhile to remark that remediation of Hg(II) in aqueous solutions is hard to attain completely, because of the low levels needed to avoid toxicity (in the order of gg L ). Thus, very sensitive analytical tools must be used to control the concentration of species in the solution. The physicochemical properties of the products derived from the treatment also introduce serious difficulties. Although zerovalent mercury can be carefully distilled off by mild heating, trapped and recondensed, or it can be dissolved with nitric... 

The multiple exchange in alkanes, which is very sensitive to reaction conditions, may be used to prove the formation of alkyl platinum derivatives as intermediate products of the exchange. Alkyl platinum derivatives can be produced using organomercuric compounds via the exchange reaction... 

Miscellaneous substances Thalidomide, polychlorinated biphenyls, organomercuric compounds, methimazole, bisulfan, cyclophosphamide, procymidone, trimethadione, abamectin, aminopterin, isotretinoin, valproic acid... 

The organomercuric compound 13 was transformed into diketone 14 by hydroxylation with oxygen in the presence of NaBH4 followed by Jones oxidation. LAH reduction and acetylation provided diacetate 15 as a mixture of diastereomers, and which was converted to ( )-baiyunol (4) by U/NH3 reduction followed by hydrolysis. Thus the aglycone 4 was obtained as a racemate by rather simple operation in good overall yield. ... 

The specific activity of mercury is the same in both forms, and for w>100w,c h is practically equal to the original specific activity of the added radiomercury. For this reason, the radioactivity of the separated organomercuric compound is directly proportional to its amount. For the separation of C6H5HgCl from HgCl, liquid-liquid extraction can be used. 

To extract organically boundmercury from the muscle tissue of fish, Westoo homogenized the fish with water and acidified with concentrated hydrochloric acid (1/5 of the volume of the suspension). Organomercuric compounds were then extracted in one step with benzene using the method described by Gage. Methylmercury could be extracted with difficulty where only a small amount of acid is present (e.g. at pH 1). From an aliquot of the benzene solution, organomercury could be extracted with ammonium or sodium hydroxide solution, saturated with sodium sulphate, for elimination of lipids. The yields were low and variable, but could be improved as described below. 

Jute fabrics generally are treated with rot-resistance chemicals or with bitumen they can also be laminated with urethane foam to enhance the life of geotextiles considerably by at least 3—4 years (Chatteijee et al., 1994). Jute can be treated with chemicals such as phenol, tritolyl phosphate/tricresyl phosphate and so forth to withstand microbial attack for longer duration. Other antimicrobial agents such as organomercuric compounds, copper compounds and quaternary ammonium compounds can also be used. 

A selective alkylating agent is organomercuric compound 124, as is cyclometalation product 117 (Schapiro et al, 1977, 1979). An alkylating spin label for the carboxyl group is stable diazanitrone 95a (Shchukin... 

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