Triorganotin compounds reactions

Reactions. The utility of triorganotin chlorides and their application as starting materials for most other triorganotin compounds results from the ease of nucleophile displacement, as indicated in Figure 1. The commercially important trioiganotin compounds are most frequently the oxides or... 

A rather exotic example of a triorganotin compound in which penta-coordinate tin centers are proposed as a result of intramolecular coordination is the product 97, obtained from the hydrolysis reaction of the ester-tin compound 96. For the latter compound, the presence of a pentacoordinate tin center as a result of intramolecular Sn—O (carboxyl) coordination was proposed 141) ... 

The main method of preparation of triorganotin compounds is by the reaction of tetraorganotin compounds with an inorganic salt of tetravalent tin. The reaction is most rapid with tin tetrachloride ... 

Mechanisms of triorganotin anionic reactions with haloarenes include SrnI and halogen-metal exchanges. Further examples of the use of RsSnM compounds are shown in equations (13-15). Various functional group substituents are clearly much less sensitive towards RsSnM than to RM, e.g. CN, CO2R, etc. 

For organometalhc species, the decomposition of a molecule takes place via a series of electrophihc and nucleophilic reactions of the alkylated (or otherwise organically substituted) molecule with the hydroxyl and hydrogen radicals. For the example of an alkylated triorganotin compound, atomisation can be described by the following reaction sequence ... 

This reaction is useful in the preparation of anionic derivatives from the chlorides when the nucleophilic displacement route is unsatisfactory. Even weak acids, eg, phenols, mercaptans, and cycHc nitrogen compounds, can be made to undergo reaction with triorganotin hydroxides or bisoxides if the water of reaction is removed a2eotropicaHy as it forms. 

Triorganotin hydrides do react with HMn(CO)5 to give Mn2(CO)10 and the expected (triorganostannyl)pentacarbonyl manganese80. In THF, only these two compounds are formed. In benzene, in addition to these two products, the hexa-organoditin and some starting product are found in the reaction mixture. 

Unsymmetric organostannanes can be prepared by the reaction of triorganotin sodium compounds in hquid ammonia with a triorganotin halide73,74 ... 

The reaction was also used for the synthesis of compounds containing SiMe2SiMe3 and CH2SiMe3 groups in the cyclopentadienyl ring (7). In a similar manner, triorganotin groups are eliminated in reactions with dicobalt octacarbonyl, with formation of -complexes (7) ... 

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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