Abstract
Heteroatom-containing reagents Me 3 SiOOSiMe 3 , Me 3 SiSiMe 3 , and (Me 3 Si) 3 N are utilized for the performance of efficient chemical transformations in 'one-flask.' Oxidative desulfonylation of organic sulfones to the corresponding carbonyl compounds by use of Me 3 SiOOSiMe 3 and n-BuLi involves a simple 'counterattack process'. Double functional group transformation of a nitroalkene to a carbonyl nitrile with Me 3 SiSiMe 3 went through a 'tandem double-counterattack process'. Persilylation of hydrazine with Me 3 SiSiMe 3 in the presence of KH took place by a 'consecutive triple-counterattack process'. Polymerization of trimethyl phosphate with (Me 3 Si) 3 N in the presence of n-BuLi represents an extreme example: 'multiple-counterattack process'. Use of Me 3 SiOOSiMe 3 , Me 3 SiSiMe 3 , and (Me 3 Si) 3 N as 'counterattack reagents' allows the accomplishment of complicated chemical transformations with minimal operations and often gives the desired products in good yields. © 1999 IUPAC.