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Oligosiloxane können auf programmierte Weise in einem einzigen Reaktionsgefäß synthetisiert werden. S. Shimada und Mitarbeiter beschreiben in ihrer Zuschrift auf S. 3216 ff. eine neuartige Ein‐Topf‐Synthese von Oligosiloxanen bestehend aus drei Folgereaktionen: Iridium‐katalysierte Hydrosilylierung, Bor‐katalysierte Umlagerung und Bor‐katalysierte Kreuzkupplung. Die Abfolge der SiR2‐Einheiten im Oligosiloxanprodukt...
Siloxane bonds are usually synthesized by condensation reactions, such as hydrolysis/dehydration and cross‐coupling reactions, in which the generation of by‐products during bond formation can not be avoided. We have developed a one‐pot sequence of iridium‐catalyzed silyl ester hydrosilylation and boron‐catalyzed rearrangement of the resulting disilyl acetals for the construction of siloxane bonds,...
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