Polyfunctional carbosilanes and organosilicon compounds. Synthesis via grignard reactions

Brondani, Dalci José; Corriu, R.; Ayoubi, S. El; Moreau, Joël J. E.; Man, Michel Wong Chi

doi:10.1016/s0040-4039(00)60358-1

Cited by 53 publications

(33 citation statements)

References 24 publications

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“…Obviously, it is a very attractive route to synthesize the HBPCS from non‐corrosive alkoxysilanes, such as (chloromethyl)alkoxysilanes . But the ceramic yield of the reported precursor prepared from (chloromethyl)trimethoxysilane (ClCH 2 Si(OMe) 3 ) is very low …”

Section: Introductionmentioning

confidence: 99%

“…13,14 But the ceramic yield of the reported precursor prepared from (chloromethyl)trimethoxysilane (ClCH 2 Si(OMe) 3 ) is very low. 15,16 To increase the ceramic yield, olefinic side chain groups, vinyl, ethynyl or allyl, which could sufficiently promote crosslinking reactions at lower temperature and the ceramic yield, were introduced into the HBPCS backbone. 17,18 For example, by incorporation of allyl chloride or HC ≡ CMgBr into the starting materials, PCSs with approximate formulas [SiH 1.2 (CH 3 ) 0.71 (CH 2 CH = CH 2 ) 0.09 CH 2 ] n and [SiH 1.35 (CH 3 ) 0.37 (C ≡ CH) 0.28 CH 2 ] n respectively were synthesized.…”

Section: Introductionmentioning

confidence: 99%

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Liquid polycarbosilanes: synthesis and evaluation as precursors for SiC ceramic

Zhang

Yang

et al. 2015

Polymer International

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A series of liquid polycarbosilanes were successfully synthesized by a sequential Grignard coupling reaction of (chloromethyl)triethoxysilane and vinylmagnesium bromide, followed by the reduction with lithium aluminum hydride. The use of non-corrosive, easily handleable and storage stable (chloromethyl)triethoxysilane as starting material is an attractive advantage for this route. The as-synthesized polymers containing Si-CH=CH 2 and Si-H groups are storage stable and can be easily cured in an inert atmosphere. The ceramic yield of the cured polycarbosilane and the C/Si ratio of the derived ceramic were varied by adjusting the mole ratio of starting materials in feed. Among them, the polymer with the mole ratio of Si-CH=CH 2 to Si-H as 1:10 has the highest ceramic yield as 89.6% after cured at 220 o C and the C/Si ratio of the derived ceramic is 1.48. This kind of polycarbosilane shows high potential as SiC ceramic precursor in fabrication of SiC matrix by the precursor infiltration pyrolysis (PIP) process.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Liquid polycarbosilanes: synthesis and evaluation as precursors for SiC ceramic

Zhang

Yang

et al. 2015

Polymer International

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“…[13][14][15][16] They permit the trialkoxysilylation by reaction of the organolithium reagent with ClSi(OR) 3 (where R ¼ Me, Et, OiPr). [13][14][15][16] They permit the trialkoxysilylation by reaction of the organolithium reagent with ClSi(OR) 3 (where R ¼ Me, Et, OiPr).…”

Section: Methods Permitting the Introduction Of Si(or) 3 Groupsmentioning

confidence: 99%

“…Note that this reaction permits also the preparation of functional systems which may undergo successive reactions, since it is possible to 14 and p-MgBrC 6 H 4 Si (OiPr) 3 (II) 17 have been obtained by metallation of molecules bearing Si (OiPr) 3 groups. These reagents allow the introduction of groups containing the Si(OR) 3 function.…”

Section: Methods Permitting the Introduction Of Si(or) 3 Groupsmentioning

confidence: 99%

Nanostructured Materials

2009

Molecular Chemistry of Sol‐Gel Derived Nanomaterials

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“…Recently, a novel ring‐shaped precursor was introduced, that is, 1,3,5‐tris[diethoxysila]cyclohexane [{(EtO) 2 SiCH 2 } 3 ],33, 34 in which each silicon atom has two organic substituents compared to one in all previous systems. This arrangement allows for a higher degree of organic functionalization in the walls.…”

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confidence: 99%

Hybrid Inorganic–Organic Mesoporous Materials

2004

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Another brick in the wall: Organic groups that contain several alkoxysilane substituents are applied in the synthesis of hybrid inorganic–organic mesoporous materials (see scheme). The resulting materials contain the organic moiety as an integral part of the wall. Depending on the functionality of the organic groups and on the properties of the functionalized porous material a plethora of potential applications can be envisioned.

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Polyfunctional carbosilanes and organosilicon compounds. Synthesis via grignard reactions

Cited by 53 publications

References 24 publications

Liquid polycarbosilanes: synthesis and evaluation as precursors for SiC ceramic

Liquid polycarbosilanes: synthesis and evaluation as precursors for SiC ceramic

Nanostructured Materials

Hybrid Inorganic–Organic Mesoporous Materials

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