Gotz, Tobias published the artcileMolecular Scissors for Tailor-Made Modification of Siloxane Scaffolds, Related Products of alcohols-buliding-blocks, the publication is Chemistry – A European Journal (2022), 28(2), e202103531, database is CAplus and MEDLINE.
The controlled design of functional oligosiloxanes is an important topic in current research. A consecutive Si-O-Si bond cleavage/formation using siloxanes that are substituted with 1,2-diaminobenzene derivatives acting as mol. scissors is presented. The method allows to cut at certain positions of a siloxane scaffold forming a cyclic diaminosilane or -siloxane intermediate and then to introduce new functional siloxy units. The procedure could be extended to a direct one-step cleavage of chlorooligosiloxanes. Both siloxane formation and cleavage proceed with good to excellent yields, high regioselectivity, and great variability of the siloxy units. Control of the selectivity is achieved by the choice of the amino substituent. Insight into the mechanism was provided by low temperature NMR studies and the isolation of a lithiated intermediate.
Chemistry – A European Journal published new progress about 17877-23-5. 17877-23-5 belongs to alcohols-buliding-blocks, auxiliary class Protection and Derivatization Reagent, name is Triisopropylsilanol, and the molecular formula is C9H22OSi, Related Products of alcohols-buliding-blocks.
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