Palladium-Catalyzed Cross-Coupling of Monochlorosilanes and Grignard Reagents
作者:Bojan Vulovic、Andrew P. Cinderella、Donald A. Watson
DOI:10.1021/acscatal.7b03465
日期:2017.12.1
of the Si–Cl bond (113 kcal/mol) and is a rare example of a transition-metal catalyzed process involving its activation. Because of the availability of both chlorosilanes and organomagnesium halide reagents, this method allows for the preparation of a wide range of alkyl and aryl silanes.
A polymer represented by the general formula ##STR1## where m is the average degree of polymerization of the polymer, y is an integer from 1 to 3, x is an integer from 1 to 10, A denotes a halogen atom and R denotes an alkyl radical with 1 to 6 carbon atoms.
Synthesis of 2-methylidene-1-silacyclohexanes by intramolecular hydrosilylation
作者:Silvia Díez-González、Luis Blanco
DOI:10.1016/j.jorganchem.2008.03.007
日期:2008.5
(hex-5-ynyl)silanes was achieved following two different synthetic approaches from readily available materials such as 4-bromobutene, 6-iodohexyne and chlorosilanes. Different reaction conditions for intramolecularhydrosilylation were tested to prepare the corresponding 2-methylidene-1-silacyclohexanes. Notably, the use of Speier’s catalyst allowed the regioselective formation of the desired products in moderate
We report on the synthesis of [123I]-iodometomidate from a soluble polymer-supported precursor. The precursor was linked through a soluble polymer via a silyl linker polymer-supported precursor and released [123I]-iodometomidate. The radiotracers were purified based on a combination of size-exclusive and normal-phase chromatography to provide [123I]-iodometomidate in good quality.