نتایج جستجو برای: organosilicon compounds
تعداد نتایج: 226849 فیلتر نتایج به سال:
Organosilicon reagents are highly versatile and privileged scaffolds in modern synthetic chemistry, largely due to the range of transformations groups amenable to. The β-Silicon effect is one fundamental phenomena underpinning inherent reactivity organosilicon reagents, allowing unsaturated organosilanes undergo a electrophilic substitutions with variety nucleophiles. application organic review...
Silathiazolidine and metalladithioacetals (M = Si, Ge) have been prepared by the interaction of dialkyldichloro- or bis(diethylamino)dialkylsilanes and -germanes with 3-[N-(2- thioethyl)]amino-propanamide (WR-2529) and [1-thioethyl-2-(1-naphtylmethyl)]-2- imidazoline. The study of these compounds in the field of chemical radioprotection has shown a notable decrease in the toxicity and a rather ...
Some synthetically useful transformations of organosilicon compounds have been developed since the mid 1970s, based on the new concept that the silicon-carbon bonds are activated toward electrophilic cleavage via the formation of penta- and hexa-coordinate species. This review mainly consists of the following aspects: (1) a general concept for the activation of the silicon-carbon bond via penta...
Disilenes Tbt(Mes)Si=SiTbt(Mes)(Mes:mesityl) bearing an efficient steric protection group, 2,4,6-tris[bis(trimethylsilyl)methyl]phenyl(Tbt), were synthesized and found to be extremely stable toward oxygen and water. In spite of the stability, they underwent thermal dissociation into silylenes under very mild conditions (ca. 50’ C). Silylenes thus formed reacted with alkenes, alkynes, benzene, n...
Siloxanes are commonly known as silicones. They belong to the organosilicon compounds and are exclusively obtained by synthesis. Their chemical structure determines a range of physicochemical properties which were recognized as unique. Due to the susceptibility to chemical modifications, ability to create short, long or complex polymer particles, siloxanes found an application in many areas of ...
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