Organotin chemistry. Part XI. The preparation of organotin alkoxides
作者:Alwyn G. Davies、D. C. Kleinschmidt、P. R. Palan、S. C. Vasishtha
DOI:10.1039/j39710003972
日期:——
Trialkyltin alkoxides, R3SnOR′, can be prepared conveniently by thermal decarboxylation of a mixture of the oxide, (R3Sn)2O, and dialkyl carbonate, (R′O)2CO, or (except when R = Me or Et) by azeotropic dehydration of a mixture of the bistrialkyltin oxide and alcohol, R′OH. Under these latter conditions, dibutyltin oxide forms the 1,1,3,3-tetra-butyl-1,3-dialkoxydistannoxanes, (R′O)Bu2Sn·O·SnBu2(OR′)
Kinetics and mechanism of oxidation of tri-n-butylstannyl alkoxides of benzhydrol and substituted benzhydrols by bromine in carbon tetrachloride
作者:R. Ravindran、T.R. Balasubramanian
DOI:10.1016/0022-328x(88)80182-7
日期:1988.4
The tri-n-butylstannyl alkoxides (TBSA) of benzhydrols were prepared by treating the alcohols with tri-n-butyltin oxide (TBTO) and azeotropically removing the water. They were oxidised by bromine in carbon tetrachloride to the corresponding ketones. The oxidation was found to be a second order process. The effect of substituents on the rate was studied and the Hammett ϱ was found to be − 2.55 at 308