Diastereoselective Synthesis of Homoallylic Alcohols with Adjacent Tertiary and Quaternary Centers by Using Functionalized Allylic Aluminum Reagents
作者:Zhihua Peng、Tobias D. Blümke、Peter Mayer、Paul Knochel
DOI:10.1002/anie.201003813
日期:2010.11.2
Sensitive functional groups, including ester and cyano groups, can be present in allylicaluminumreagents prepared by aluminum insertion in the presence of InCl3. These aluminum organometallic compounds undergo addition reactions to various functionalized aldehydes or ketones with remarkable diastereoselectivities allowing the construction of two adjacentquaternary and tertiarycenters (see scheme)
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