Reactivity of Titanocene Pendant Si-H Group towards Alcohols. Unexpected Formation of Siloxanes from the Reaction of Hydrosilanes and Ph3COH Catalyzed by B(C6F5)3

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F13%3A00394704" target="_blank" >RIV/61388955:_____/13:00394704 - isvavai.cz</a>

Alternative codes found

RIV/67985858:_____/13:00394704

Result on the web

<a href="http://dx.doi.org/10.1021/om400253g" target="_blank" >http://dx.doi.org/10.1021/om400253g</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/om400253g" target="_blank" >10.1021/om400253g</a>

Result language

angličtina

Original language name

Reactivity of Titanocene Pendant Si-H Group towards Alcohols. Unexpected Formation of Siloxanes from the Reaction of Hydrosilanes and Ph3COH Catalyzed by B(C6F5)3

Original language description

The reaction of [Cp(?5-C5H4CH2SiMe2H)- TiCl2] (1; Cp = ?5-C5H5) and methanol in the presence of catalytic amounts of B(C6F5)3 afforded a complex with a pendant silyl ether group, [Cp(?5-C5H4CH2SiMe2OMe)- TiCl2] (2), in good yield. The analogous reactionof 1 and Ph3COH resulted in the unexpected formation of [CpTiCl2{?-?5:?5-(C5H4)CH2SiMe2OSiMe2CH2(C5H4)}TiCl2Cp] (4). The formation of siloxanes from the reaction of 2 equiv of hydrosilane with Ph3COH mediated by B(C6F5)3 has a general applicability and proceeds in two consecutive steps: (i) transfer of the hydroxyl group from the trityl moiety to the silicon atom and (ii) silylation of the silanol formed in situ with the second equivalent of hydrosilane. The different hydrosilane reactivity toward Ph3COH in comparison with other alcohols can be attributed to the easy generation of the borate salt [Ph3C]+[(C6F5)3B(?-OH)B(C6F5)3] (5) under catalytic conditions. The intramolecular SiH and TiCl exchange in 1 is catalyzed by B(C6F5)3 in the

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CF - Physical chemistry and theoretical chemistry

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Organometallics

ISSN

0276-7333

e-ISSN

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Volume of the periodical

32

Issue of the periodical within the volume

15

Country of publishing house

US - UNITED STATES

Number of pages

8

Pages from-to

4122-4129

UT code for WoS article

000323143400014

EID of the result in the Scopus database

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