Hydrosilylation reaction of methylhydridesiloxane to phenylacetylene

Mukbaniani, O.; Tatrishvili, Tamara; Titvinidze, Giorgi; Mukbaniani, N.; Lezhava, L. D.; Gogesashvili, N.

doi:10.1002/app.23664

Cited by 11 publications

(19 citation statements)

References 11 publications

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“…Other hydrosilylation reactions were carried out according to the previously discussed method. The amount selected for platinum hydrochloric acid was 5–9 × 10 −5 g/1.0 g of starting substance 3, 4…”

Section: Methodsmentioning

confidence: 99%

“…In our previous studies, we investigated hydrosilylation reactions of PMHS with styrene, α‐methylstyrene, and phenylacetylene 3, 4. In this work, we continue to present the syntheses and investigations of polysiloxanes with aromatic fragments in the side chain to determine the correlation between the chemical composition of the polymer and phase‐transition temperatures.…”

Section: Introductionmentioning

confidence: 97%

“…Numerous works have been devoted to the modification of PMHS via hydrosilylation in the presence of platinum hydrochloric acid and different platinum complexes 3–11. Acidic Speier's catalyst cannot be used for all hydrosilylation reactions because it causes isomerization of the allylic bond followed by acidic cleavage of the functional group and, in some cases, gelation of the reaction mixture, even during the process of addition.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of polysiloxanes with pendant methoxy‐substituted aromatic fragments

Mukbaniani

Titvinidze

Dundua

et al. 2007

J of Applied Polymer Sci

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The synthesis of new polysiloxanes was performed via hydrosilylation reactions of polymethylhydrosiloxane with 4-allyl-1-methoxybenzene and 4-allyl-1,2-dimethoxybenzene in the presence of Karstedt's catalyst {Pt 2 [(VinSiMe 2 ) 2 O] 3 } and platinum hydrochloric acid (0.1M solution in tetrahydrofuran). The hydrosilylation reactions were carried out at 608C. The molar ratio of BSiÀ ÀH groups to the allylic compound was 1 : 1.2. The synthesized oligomers were characterized with 1 H-NMR, Fourier transform infrared spectroscopy, differential scanning calorimetry, thermogravimetry, and gel permeation chromatography. In the presence of platinum hydrochloric acid, not all active BSiÀ ÀH bonds took part in hydrosilylation, and because of this, gelation took place and the molecular masses of the extracted parts increased 7-8 times; in contrast to this, in the presence of Karstedt's catalyst, all active BSiÀ ÀH bonds participated in hydrosilylation, and an increase in the molecular masses did not occurs. The influence of substituted methoxy groups on the glass-transition temperatures was studied.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Synthesis of polysiloxanes with pendant methoxy‐substituted aromatic fragments

Mukbaniani

Titvinidze

Dundua

et al. 2007

J of Applied Polymer Sci

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“…We tentatively assigned these peaks to trapped hexane solvent and/or aliphatic groups (methylene and methine) resulted from branching process between the surface Si-CH=CH-groups during drying the samples. 6 Without any in situ evidences, we assumed that the methoxy ions generated from the reaction between MeOH and LiAlH 4 in the quenching step, step 2 in Scheme 1, could react with H-Si QDs to form partial Si-OMe termination, which was further converted into oxidized components during the purification steps. The oxidation of H-Si QD surface by alkoxy has been reported previously in the microplasma reaction, where ethanol solvent was dissociated into ethoxy ions by reacting with plasma electron.…”

Section: Notesmentioning

confidence: 99%

Synthesis of Styryl-Terminated Silicon Quantum Dots: Reconsidering the Use of Methanol

Dũng

Jeong²

2012

Bulletin of the Korean Chemical Society

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“…The hydrosilylation of styrene, ␣-methylstyrene, phenylacetylene [107,108] allyl methoxybenzene and allyl dimethoxybenzene [109], in the presence of Karstedt's catalyst and H 2 PtCl 6 in THF, showed that Karstedt's catalyst is more efficient in the reactions examined.…”

Section: Mementioning

confidence: 99%

Organosilicon – Organic Hybrid Polymers and Materials

Marciniec

Hydrosilylation

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Hybrid organic-organosilicon materials, obtained by the combination of molecular organic and organosilicon components, have been considered potentially attractive for the purpose of development of new materials with distinct and specific properties, if compared to single organic and organosilicon constituents. One of the most useful methods for the synthesis of such materials is based on hydrosilylation processes. In this chapter, hydrosilylation is discussed in the aspects of its use for organic polymer modification and syntheses of multiblock and segment polymers. Another part of this chapter is devoted to the manufacture of nanocomposite, via hydrosilylation by using functionalised silsesquioxanes as fillers. Finally, the application of hydrosilylation processes to functionalisation of surfaces of materials as well as silicon single crystals and porous silicon is presented. Functionalisation of Unsaturated Organic Polymers by Silicon CompoundsThe hydrosilylation reaction of unsaturated polymers offers a useful and convenient method for preparing silane-modified polymers which may find potential applications as rubber materials, adhesives and drug delivery agents [1]. The hydrosilylation of vinyl-or allyl-containing organic monomers or macromonomers by hydrosilanes or hydrosiloxanes can lead to block or graft copolymers and hybrid materials. The hydrosilylation of unsaturated polymers (e.g. polybutadiene, polyisoprene, polyesters, other polyenes, polycarbonates) with silane having hydrolysable substituents at silicon atoms leads to the formation of polymeric systems with enhanced activity toward mineral fillers [2]. Both > C=C< as well as >C=O bonds are capable of hydrosilylation. This modification is connected with a reversed use of the silane (siloxane) coupling agents. Trialkoxysilyl groups are commonly incorporated into the polymers by Pt-catalysed hydrosilylation of internal or terminal olefinic bond.

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Hydrosilylation reaction of methylhydridesiloxane to phenylacetylene

Cited by 11 publications

References 11 publications

Synthesis of polysiloxanes with pendant methoxy‐substituted aromatic fragments

Synthesis of polysiloxanes with pendant methoxy‐substituted aromatic fragments

Synthesis of Styryl-Terminated Silicon Quantum Dots: Reconsidering the Use of Methanol

Organosilicon – Organic Hybrid Polymers and Materials

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