775-12-2Relevant articles and documents
Interconversion of silylphenyl and phenylsilyl cations in the reaction with benzene
Shishigin,Avrorin,Kochina,Sinotova,Ignat'ev
, p. 1393 - 1394 (2005)
The possibility for positive charge migration in SiC6H 7 + cation from carbon to silicon (or vice versa) was studied by the radiochemical method. Silylphenyl cation with initial charge localization on the carbon atom is transformed into phenylsilylium ion where the positive charge is localized on the silicon atom. No migration of positive charge from the silicon atom to carbon occurs. 2005 Pleiades Publishing, Inc.
Palladium(II) catalysed silicon-oxygen bond formation versus rearrangement reactions
Purkayastha,Baruah
, p. 9 - 14 (2001)
Phenylsilane and diphenylsilane undergoes rearrangement reactions by palladium catalysts such as Pd(TMEDA)Cl2, Pd(TEEDA)Cl2, [Pd(PPh3)]2Cl2 (where TMEDA = tetramethylethylenediamine, TEEDA = tetraethylethylenediamine) at room temperature. However, the reductive Si-O bond forming reaction can be performed on hydrosilanes through competitive paths. The reactions of phenylsilane and quinonic compounds are catlaysed by Pd(TMEDA)Cl2 (such as 1,4-benzoquinone, 1,4-napthoquinone) to give siloxanes, backbone of these siloxanes which contains rearranged phenylsilane units. The thin films of such oligomers has plot of resistance vs temperature profile resembling semiconductor.
CATALYTIC REDUCTION OF HALOGENATED CARBOSILANES AND HALOGENATED CARBODISILANES
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Paragraph 0070; 0071, (2021/04/02)
Selective reduction methods for halogenated carbosilanes and carbodisilanes are disclosed. More particularly, high yields of the desired carbosilanes and carbodisilanes are obtained by reduction of their halogenated counterparts using a reducing agent and tetrabutylphosphonium chloride (TBPC) as a catalyst.
An effective total synthesis of four angiotensin-converting enzymes containing silanediols
Duong, Hoan Quoc,Sieburth, Scott McN
, p. 866 - 873 (2021/09/28)
Four angiotensin-converting enzymes (ACE) containing silanediols 1 have been synthesized successfully in 8% overall yield in 8 steps from inexpensive starting materials such as diphenyldichlorosilane 5, β-methylallylic alcohol 7 and Ellman sulfinimine 9.
Metal-free hydrogen evolution cross-coupling enabled by synergistic photoredox and polarity reversal catalysis
Cao, Jilei,Lu, Kanghui,Ma, Lishuang,Yang, Xiaona,Zhou, Rong
supporting information, p. 8988 - 8994 (2021/11/23)
A synergistic combination of photoredox and polarity reversal catalysis enabled a hydrogen evolution cross-coupling of silanes with H2O, alcohols, phenols, and silanols, which afforded the corresponding silanols, monosilyl ethers, and disilyl ethers, respectively, in moderate to excellent yields. The dehydrogenative cross-coupling of Si-H and O-H proceeded smoothly with broad substrate scope and good functional group compatibility in the presence of only an organophotocatalyst 4-CzIPN and a thiol HAT catalyst, without the requirement of any metals, external oxidants and proton reductants, which is distinct from the previously reported photocatalytic hydrogen evolution cross-coupling reactions where a proton reduction cocatalyst such as a cobalt complex is generally required. Mechanistically, a silyl cation intermediate is generated to facilitate the cross-coupling reaction, which therefore represents an unprecedented approach for the generation of silyl cationviavisible-light photoredox catalysis.