Catalytic Dehydrogenative Stannylation of C(sp)–H Bonds Involving Cooperative Sn–H Bond Activation of Hydrostannanes
作者:Francis Forster、Victoria M. Rendón López、Martin Oestreich
DOI:10.1021/jacs.7b13088
日期:2018.1.31
a stannylium-ion-like tin electrophile by heterolytic cleavage of the Sn-H bond in hydrostannanes at the Ru-S bond of Ohki-Tatsumi complexes is reported. Reacting these activated hydrostannanes with terminal acetylenes does not lead to hydrostannylation of the C-C triple bond but to dehydrogenative stannylation of the alkyne terminus. The scope of this rare direct C(sp)-H bond stannylation with hydrostannanes
The synthesis of allylstannanes and, vinylstannanes by the stannyl-cupration of allenes
作者:Asunción Barbero、Purificación Cuadrado、Ian Fleming、Ana M. González、Francisco J. Pulido
DOI:10.1039/c39900001030
日期:——
Stannyl-cupration of allenes followed by electrophilic attack gives allyl- and vinylstannanes with a variety of substitution patterns; the regiochemistry of the reaction depends upon the temperature and the nature of the stannyl-cuprate reagent.