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Solid-phase Synthesis of [4.4] Spirocyclic Oximes
Published on: February 6, 2019
Cyclotetrasiloxanetetrols with methyl groups at silicon: isomers all-cis- and cis-trans-cis-[MeSi(O)OH](4)
Yulia A Pozdnyakova1, Alexander A Korlyukov, Elena G Kononova
1A. N. Nesmeyanov Institute of Organoelement Compounds of RAS, Vavilova 28, 119991 Moscow, Russia. pozdn@ineos.ac.ru
Abstract:
1,3,5,7-Tetramethyl-1,3,5,7-tetrahydroxycyclotetrasiloxane has been synthesized in good yield from tetrapotassium tetramethylcyclotetrasiloxanolate. Methods for isolation of all-cis-isomer I and cis-trans-cis-isomer II as the only crystalline product have been developed. Both isomers have been characterized by single-crystal X-ray diffraction analysis (XRD), elemental analysis, NMR ((1)H, (13)C, (29)Si), and IR. The stability of these compounds in solutions and the solid state has been investigated.
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