Reshuffling of Functionalities Catalyzed by a Ruthenium Complex in Water
作者:Chao-Jun Li、Dong Wang、Dong-Li Chen
DOI:10.1021/ja00156a028
日期:1995.12
Repositioning the functionalities of olefinic alcohols is a common process encountered in synthesis. Such transformations often require multistep reactions, or strong acids. We report here that, in the presence of a catalytic amount of RuClsub2}(PPhsub3})sub3}, homoallylic alcohols and allyl alcohols undergo structural reorganization in which both the hydroxyl group and the olefin have been reshuffled
Mild bottom-up synthesis of indium(0) nanoparticles: characterization and application in the allylation of carbonyl compounds
作者:Viviana Dorn、Alicia Chopa、Gabriel Radivoy
DOI:10.1039/c5ra27928c
日期:——
Very reactive, monodisperse (4.0 ± 0.5 nm) spherical indium(0) nanoparticles have been generated in situ, in a simple, mild and efficient way, by fast reduction of commercially available indium(III) chloride with lithium sand and a catalytic amount of 4,4′-di-tert-butylbiphenyl (DTBB) in THF, at room temperature, and in the absence of any anti-agglomeration additives or ligands. The as-synthesized
as-synthesized active bismuth is applied as a reagent for the synthesis of homoallyl alcohol/homopropargyl alcohol from allylbromide/propargyl bromide and carbonyl compounds in water at \(50\,^\circ }}\hbox C}\). The homoallyl amines are also synthesized from N-tosyl aldimines and allylbromide using active bismuth reagent in good yields. No assistance of organic co-solvent, co-reagent, phase transfer catalyst
A novel concept of one-pot sequential doublenucleophilicattacks using two different nucleophiles to a molecule having identical functionalities was established via an indium-employed allylation strategy involving an HOAc quenching after the first allylation.
Pentaco-ordinate silicon compounds in synthesis: regiospecific allylation of aldehydes by use of triethylammonium bis(pyrocatecholato)allylsilicates
作者:Akira Hosomi、Shinya Kohra、Yoshinori Tominaga
DOI:10.1039/c39870001517
日期:——
The title compounds, readily prepared from allytrimethoxysilane, pyrocatechol, and triethylamine, react with aldehydesregiospecifically and chemoselectively without catalyst under mild conditions: the allylation takes place even in protic solvents such as ethanol.