(4+2) cycloadditions of acetylenic organotins : synthetic applications of polyfunctional cyclic vinyltins
作者:Bernard Jousseaume、Patrice Villeneuve
DOI:10.1016/0040-4020(89)80023-7
日期:1989.1
A novel preparation of functional vinyltlns Is described. It Involves the reglospeclfic [4+2] cycloaddition of functional alkynyltins with dienes such as 1.3-butadlene, 2,3-dlmethyl-13-butadlene or 1-substltuted 1,3-butadlenes.
Intramolecular nucleophilic assistance at tin: reversal of selectivity in S E2 cleavage of mixed tetraorganotin compounds by iodine
作者:B. Jousseaume、P. Villeneuve
DOI:10.1039/c39870000513
日期:——
Electrophilic cleavage of mixed-functionality tetraorgantin compounds by iodine reveals a complete reversal of the usually observed selectivity, i.e. alkyltin–carbon bonds are broken in preference to aryl- or vinyl-tin–carbon bonds; this unexpected result is explained by intramolecularassistance at tin.