Triorganotin halides reactions

An alternative route makes use of the different reactivity of the metal IB—C and Li—C bonds toward the arylation of triorganotin halides reaction (j), in which the ligand L is removed, is then followed by ... 

The reaction of configurationally unstable triorganotin halides with the chiral reducing agent introduced by Vigneron and Jacquet45H-Al(0-3,5-Me2Ph)2(0-... 

The main method for the preparation of different types of organostannanes is the ancient Wilrtz reaction between triorganotin halides or diorganotindihalides. Reactions proceed with or without solvent. Usual solvents are benzene, toluene, xylene, diethyl ether and ethanol. Occasionally hquid ammonia is also used. The preferred metals for this reaction are sodium and lithium. In the case of triorganotin halides, the reaction leads to symmetric hexaorganoditin compounds72 ... 

Various tin-tin bonded compounds are known. The simplest tin tin bonded compounds, hexaorganoditins, RsSnSnRs, are available by several routes, including (i) from triorganotin halides and alkali metals in ether or liquid ammonia (equation 65) (ii) from triorganotin hahdes and triorganotin lithium compounds (equation 66) and (iii) from triorganotin hydrides in the presence of a base (such as pyridine) or on reaction with Sn-O, Sn-N, or Sn-S species (Scheme 14). 

As has been indicated earlier, an organic halide such as carbon tetrachloride can react with a ditin to produce the triorganotin halide with the aid of a free radical initiator such as benzoyl peroxide (266, 267). Again with ultraviolet catalysis, hexamethylditin adds to tetrafluoroethylene to produce 1,2-bis-(trimethylstannyl)tetrafluoroethane (282). A similar reaction occurs with perfluoropropylene (282a). 

II Reaction of triorganotin halide with sodium tropolonate. 

Ill Substitution reaction of triorganotin halide RsSnX with ... 

The reaction between triorganotin hydrides and organic halides is known since 1957 68). Analogous reactions have been described for chiral triorganosilicon69) and -germanium 70) hydrides, which are stereoselective. It is well known that they proceed via the triorganometal radical, which can also be formed photochemically from metallated ketones 71). 

Triorganotin salts of general formula [R3Sn] A+, A = alkali metal, are readily obtained from the reaction of the corresponding chlorotin compounds with the alkali metal. Reaction of these compounds with transition-metal halides is thus another useful salt-elimination reaction for the formation of tin-metal bonds. A representative selection of such reactions is illustrated in equation 72 -7448,49,232. 

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