Organosilane compounds having the structural formula ##STR1## wherein R is a linear or branched C.sub.1-4 alkyl, 4-methyl-piperidyl, C.sub.6-12 aryl or C.sub.5-7 cycloalkyl; R.sup.1 is hydrogen, methyl or ethyl; R.sup.2 is methyl or ethyl and; n is 4 to 7. These organosilane compounds are useful as electron donors in Ziegler-Natta type catalyst systems.
One-step conversion of methoxysilanes to aminosilanes: a convenient synthetic strategy to N,O-functionalised organosilanes
作者:Jonathan O. Bauer、Carsten Strohmann
DOI:10.1039/c2cc32727a
日期:——
A straightforward substitution of silicon-bonded methoxy groups by a lithium amide leading to aminomethoxysilanes is presented. DFT calculations allow thermodynamic insight into the unusual equilibrium conditions. The applicability of N,O-functionalised organosilanes is exemplified by the convenient synthesis of an unsymmetrical methoxydisiloxane.
Stereoselective Synthesis of Silicon-Stereogenic Aminomethoxysilanes: Easy Access to Highly Enantiomerically Enriched Siloxanes
作者:Jonathan O. Bauer、Carsten Strohmann
DOI:10.1002/anie.201307826
日期:2014.1.13
A route towards the synthesis of N,O‐functionalized silicon‐stereogenic organosilanes with excellent optical purities has been developed. Investigations into the stereoconvergence and configurational stability of an aminomethoxysilane suggest a kinetically controlled multistep substitution mechanism. Selective exchange of the Si‐N bond by a second Si‐O bond builds the basis for the controlled formation
Trialkoxysilane Exchange: Scope, Mechanism, Cryptates and pH‐Response
作者:Selina Hollstein、Philipp Erdmann、Andreas Ulmer、Henrik Löw、Lutz Greb、Max von Delius
DOI:10.1002/anie.202304083
日期:2023.6.26
The exchange reaction of trialkoxysilanes with alcohols typically requires very harsh conditions and has therefore not been used for the self-assembly of host-guest systems. In this work, unexpected solvent and salt effects are described, rationalized and exploited for the synthesis of degradable supramolecular hosts.