Allylation of the radical generated from alpha-silyl-alpha-phenylselenoacetic esters with various allyltributyltin substrates led to good yields of the corresponding homoallylsilanes. A study on the nature of the radical thus generated was performed using comparative allylation rates with electronically different allyltributyltin compounds. Finally, these homoallylsilanes were converted into the corresponding homoallylic-1,2-diols after reduction of the ester function and oxidation of the C-Si bond.
Uniting Anion Relay Chemistry with Pd-Mediated Cross Coupling: Design, Synthesis and Evaluation of Bifunctional Aryl and Vinyl Silane Linchpins
作者:Amos B. Smith、Won-Suk Kim、Rongbiao Tong
DOI:10.1021/ol902784q
日期:2010.2.5
Union of type II AnionRelayChemistry (ARC) with Pd-induced Cross Coupling Reactions (CCR) has been achieved, in conjunction with the design, synthesis, and evaluation of a new class of bifunctionallinchpins, comprising a series of vinyl silanes bearing β- or γ-electrophilic sites. The synthetic tactic permits both alkylation and Pd-mediated CCR of the anions derived via 1,4-silyl C(sp2)→O Brook