Organosilicon aroxyls form disiloxybiaryls via C-C dimerization with simultaneous (or subsequent) isomerization of the dimeric intermediate, involving migration of the ortho-organosilyl substituents from carbon to oxygen.
Organosilicon aroxyls form disiloxybiaryls via C-C dimerization with simultaneous (or subsequent) isomerization of the dimeric intermediate, involving migration of the ortho-organosilyl substituents from carbon to oxygen.
P/O Ligand Systems: Synthesis, Reactivity, and Structure of Tertiary
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‐Phosphanylphenol Derivatives
作者:Joachim Heinicke、Renat Kadyrov、Markus K. Kindermann、Manuela Koesling、Peter G. Jones
DOI:10.1002/cber.19961291223
日期:1996.12
P-asymmetric derivatives. Limitations and side reactions by use of 1 in the above synthesis are discussed. Acid-base properties, pH-dependent solubility in water/hexane, and substitution reactions at oxygen and phosphorus of selected representatives of 5 are reported. An example for the separation of enantiomers by esterification with (1S)-()-camphanic acid chloride is given. IR studies revealed intramolecular
Si-BEZA – catalytic pyridinium triflate: a mild and powerful agent for the silylation of alcohols
作者:Tomonori Misaki、Minoru Kurihara、Yoo Tanabe
DOI:10.1039/b107447b
日期:2001.11.22
A highly efficient method of silylation using a novel agent, Si-BEZA (silylbenzamide), together with a pyridinium triflate catalyst was developed, wherein a variety of silyl groups can be introduced into sterically crowded alcohols under mild conditions.