Mercurials stannyl

In a,jS-unsaturated stannyl esters the acyl moiety is displaced by mercury(II) salts without affecting carbon-carbon double bonds, as shown in reaction 71322. 

Sn—C bond formation is achieved by electrochemical alkylation of stannyl chlorides. The polarogram of dichlorodiphenyltin Ph2SnCl2, on mercury cathode, shows four waves having 1/2 values which are dependent on the electrolyte (see Table 26). Of these four,... 

Similarly, from a mixed germyl(stannyl)mercury compound, the tetrametallic complex (CgF5)3SnHgM(PPh3)2Ge(C6F5)3 was obtained as a mixture of cis and trans isomers345. 

The cyclopentadienyltin compounds (and cyclopentadienyl derivatives of other metals such as mercury and lead) are very sensitive to photolysis, and on irradiation with UV light in an ESR spectrometer they show the spectrum of the cyclopentadienyl radical the stannyl radical is difficult to observe directly under these conditions, but its presence is established by the reactions which it shows with substrates such as alkyl halides. This provides a useful route to a variety of stannyl radicals (see Section 20.1.1), and a method of generating cyclopentadienyl radicals for study by ESR spectroscopy.125 It would be interesting to extend these ESR studies to the more complex compounds 9-6-9-9, which are known to be photosensitive. 

Diazo(trialkylsilyl)acetates 1 can be prepared conveniently from an alkyl diazoacetate and a trialkylsilyltriflate in the presence of a tertiary amine (path A). Furthermore, metalation of ethyl diazoacetate with butyllithium at — 110 °C, followed by addition of chlorotrimethylsilane provides ethyl diazo(trimethylsilyl)acetate. Ethyl diazo(trimethylsilyl)acetate and the corresponding trimethylgermyl- and trimethylstannyl- substituted diazoacetate have been prepared from mercury bis(ethyl diazoacetate) and bis(trimethylsilyl-, germyl- or stannyl)sulfide (path B). Ethyl diazo(trimethylgermyl)- and ethyl diazo(trimethylstannyl)acetate were obtained from ethyl diazoacetate and diethylaminotrimethyltin or -germanium (path C). Similarly, the ethyl (trimethylplumbyl)diazoacetate was obtained from bis(trimethylsilyl)aminotrimethyl-lead. 2... 

Despite this background reaction, the reaction rate is substantially accelerated by Lewis bases, which provides an opportunity for developing an asymmetric variant. The required enoxytrichlorosilanes 21.97 can be generated in various ways, e.g., from the corresponding trimethylsilyl enol ethers on reaction with silicon tetrachloride, catalysed by mercury(ii) acetate from carbonyl compounds or trimethylsilyl enol ethers on treatment with trichlorosilyl triflate from cx-chloroketones on reaction with trichlorosilane and triethylamine or from the corresponding tributyl-stannyl enol ethers, etc. ... 

The preparation of tris(pentafluorophenyl)-silyI, -germyl, and -stannyl derivatives of cadmium and mercury has been described. Thus tris(penta-fluorophenyl)silane yields bis[tris(pentailuorophenyl)silyI]cadmium by the route ... 

Bis(triphenyltin)dihydridobis(methyldiphenylphosphine)plati-num, see Sn-00474 Bis(triphenyltin)oxide, see Sn-00440 >Bis(triphenyltin) sulfide, Sn-00443 Bis(triphenyltin)telluride, Sn-00446 >Bis(tripropyltin) oxide, see Sn-00339 >Bis[tris(2-methyl-2-phenylpropyl)tin] oxide, see Sn-00473 Bis[tris(pentafluorophenyl)germyl]cadmium, Ge-00271 Bis[tris(pentafluorophenyl)germyl] mercury, Ge-00273 Bis[tris(pentafluorophenyl)germyl] selenide, see Ge-00275 Bis[tris(pentafluorophenyl)germyl] sulfide, see Ge-00274 [Bis[tris(pentafluorophenyl)stannyl]]mercury, Sn-00435 Bis[tris(trifluoromethyl)germanium]oxide, see Ge-00064 Bis[tris[(trimethylsilyl)methyl]stannyl]mercury, Sn-00399 Bromo( 7 -2,4-cyclopentadien-1 -yl)lead, Pb-00035 Bromo( 7 -2,4-cyclopentadien-1 -yl)tin, Sn-00086 Bromodimethylstannane, Sn-00022... 

Diethyl(trimethylgermyl)phosphine, Ge-00096 34478-38-1 Tetrakis(trimethylgermyl)hydrazine, Ge-00170 34478-39-2 Tetrakis(trimethylstannyl)hydrazine, Sn-00271 34501-62-7 Bis[tris[(trimethylsilyl)methyl]stannyl]mercury, Sn-00399... 

Bis[tris(pentafluorophenyl)stannyl]mercury reacts with lanthanoids like the Ge-analog but under milder conditions. 

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