Synthesis of new organosilicon compounds by CS2: Mercapto-silyl-thiones
作者:Kazem D. Safa、Khatereh Ghorbanpour
DOI:10.1016/j.jorganchem.2013.07.051
日期:2013.11
A new type of chemistry of carbon disulfide proceeding by way of nucleophilic attack of tris(trimethylsilyl)methyllithium (TsiLi) at carbon of carbon disulfide is reported. The treatment of TsiLi and CS2 with some symmetrical and unsymmetrical benzyl halides has yielded novelmultifunctionalcompounds with SiMe3, SH and CS groups. The obtained compounds (mercapto-silyl-thiones) have been produced with
Comparison of tris(dimethylphenylsilyl)methyllithium and tris(trimethylsilyl)methyllithium reactions with carbon disulfide: a new route for the synthesis of some 1,1-bis(benzylthio)- and bis(allylthio)-2,2-bis(dimethylphenylsilyl)ethenes
作者:Kazem D. Safa、Khatereh Ghorbanpour
DOI:10.1080/17415993.2013.879307
日期:2014.5.4
A series of bis(benzylthio)- and bis(allylthio)-2,2-bis(dimethylphenylsilyl) ethenes has been obtained by the reaction of (PhMe2Si)3CLi and CS2 with benzyl and allyl bromides. A plausible mechanism for the formation of these compounds has been proposed. The reactivity of (PhMe2Si)3CLi toward CS2 has been compared with that of (Me3Si)3CLi. The reaction of (PhMe2Si)3CLi with CS2 and 2-methyloxirane gave
New aspects of the chemistry of CS<sub>2</sub>: synthesis of mercapto-triorganosilyl-thiones by use of tris(trimethylsilyl)methyllithium
作者:Kazem D. Safa、Khatereh Ghorbanpour
DOI:10.1080/17415993.2013.830726
日期:2014.3.4
Tris(trimethylsilyl)methyllithium (TsiLi) reacts with CS2 via cleavage of the C=S double bond and unexpected rearrangement to give sulfur-containing organosilicon compounds. The intermediate, from the reaction between TsiLi and CS2 is not stable but it has been trapped by various alkyl halides to give mercaptobis-(trimethylsilyl)-thiones. These reactions are quantitative and high yields in short periods
Synthesis of novel 1,4-disubstituted 1,2,3-triazoles bearing organosilicon-sulfur groups via the click reaction sonocatalyzed by LaCu<sub>x</sub>Mn<sub>1-x</sub>O<sub>3</sub> nanoparticles
作者:Kazem D. Safa、Hanieh Mousazadeh
DOI:10.1080/00397911.2016.1217339
日期:2016.10.1
ABSTRACT A highly efficient and environmentally friendly one-pot procedure for the synthesis of 1,2,3-triazoles by 1,3-dipolarcycloaddition of benzyl halides, terminal alkynes, and sodium azide over LaCuxMn1-xO3 perovskite oxides was developed. LaCu0.7Mn0.3O3 was found to be active with low catalyst loading under ultrasonic irradiation in aqueous media. The reaction was performed efficiently in the presence
The reactions of tris(trimethylsilyl)methyl-lithium with some carbon electrophiles
作者:Ian Fleming、Christopher D. Floyd
DOI:10.1039/p19810000969
日期:——
non-enolisable aldehydes, ketones, and acid chlorides, and with some epoxides, with the formation of carbon–carbon bonds. This method of preparing functionalized silanes is limited by the readiness with which (1) abstracts a proton, if one is available, rather than attacks at carbon. In the reaction with epoxides, the product alkoxide can transfer a silyl group from carbon to oxygen, and in one case the