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CAS No. : | 107-51-7 | MDL No. : | MFCD00008264 |
Formula : | C8H24O2Si3 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | CXQXSVUQTKDNFP-UHFFFAOYSA-N |
M.W : | 236.53 | Pubchem ID : | 24705 |
Synonyms : |
|
Signal Word: | Danger | Class: | 3 |
Precautionary Statements: | P210-P403+P235 | UN#: | 1993 |
Hazard Statements: | H225 | Packing Group: | Ⅲ |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
1. Simethicone Blend Place simethicone and sorbitol in a 16 quart P-K Twin Shell Blender. Blend for 2 minutes. | ||
Substances prepared by the method of the invention are, for example, the siloxane compounds of the general formula R"4-n Si(OSiR3)n, all obtainable from hexamethyldisiloxane, simultaneously with trimethylchlorosilane as a second product, which are listed herewith: ... 2.2.6.6-tetramethyl-4-trimethylsiloxy-2,4,6-trisila-3.5-dioxaheptane, 2.2.6.6-tetramethyl-2.4.6-trisila-3.5-dioxaheptane, 2.2.8.8-tetramethyl-4.4.6.6-tetrakis-trimethylsiloxy-2.4.6.8-tetrasila-3.5.7-trioxanonane, 2.2.4.6.6-pentamethyl-4-trimethylsiloxy-2.4.6-trisilia-3.5-dioxaheptane, 2.2.4.4.6.6-hexamethyl-2.4.6-trisila-3.5-dioxaheptane, 2.2.6-trimethyl-4.4-bis-trimethylsiloxy-2.4-disila-3-oxaheptane, 2.2-dimethyl-4.4-bis-trimethylsiloxy-2.4-disila-3-oxadocosane, 2.2.6.6-tetramethyl-4-vinyl-4-trimethylsiloxy-2.4.6-trisila-3.5-dioxaheptane, ... |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With potassium hydroxide Siedetemperatur; | ||
With ammonia at 25℃; |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With tetrachloromethane; sulfuric acid | ||
With tetrachloromethane; antimonypentachloride | ||
With tetrachloromethane; sulfuric acid |
With tetrachloromethane; antimonypentachloride |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
64%Spectr. | With 10 mol% palladium on carbon; In ethyl acetate; at 20℃; for 24h; | In a two-necked flask equipped with a magnetic stirrer, 10 mol% palladium-carbon (157 mg) and dimethyldibenzyloxysilane (201 mg, 0.74 mmol) in terms of benzyloxy were added and 6 ml of ethyl acetate was added.Further, trimethylchlorosilane (0.318 g, 2.93 mmol) was added, and the mixture was reacted at room temperature for 1 day. Then, the solvent was distilled off.Again, an ethyl acetate solution was prepared, palladium carbon was centrifuged and the reaction solvent was distilled off.When the obtained colorless solid was analyzed by 1 H, 13 C, 29 Si NMR, it was confirmed to be Me 2 Si (OSiMe 3) 2, and from the integrated value of 1 H NMR using hexamethylbenzene as an internal standard, the yield was 64% It was. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
10% | With tetrabutylammonium decatungstate; In acetonitrile; for 3h;UV-irradiation; Inert atmosphere; | TBADT (10 mol %), 1,1,1,3,5,5,5-heptamethyltrisiloxane (1.5 equiv.) of formula (VIII):Hydrosilylation of Ethyl Acrylate with a Siloxane in Acetonitrile Hydrosilylation of Ethyl Acrylate with a Siloxane in AcetonitrileThe degree of conversion and the relative yield of the reaction were measured by 1H NMR analysis at 300 MHz. was obtained with a degree of conversion of 84% and a yield of 10%.was obtained with a degree of conversion of 84% and a yield of 10%. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
To a 100 ml glass flask was added 10.0 g (0.045 mol) of heptamethyltrisiloxane and4.8 g (0.067 mol) of acrylic acid,In the concentration of 30ppm chloroplatinic acid catalyst,At a reaction temperature of 80 C, the reaction time was 48 h,To obtain the first step of the intermediate 1, after vacuum distillation, extraction, vacuum box drying to get pure intermediate 1;12.0 g (0.041 mol) of pure intermediate 1 was added 0.04 g (0.36 mmol, 0.235% of the total mass of the reactants) of the reactant, hydroquinone and 5.0 g (0.029 mol) of ethylene glycol diglycidyl ether 100 temperature drop reaction 12h,Add 0.007 g(0.022 mmol, 0.041% of the total mass of the reactants)Catalyst tetrabutylammonium bromide catalyzed the second step of the intermediate,Respectively, after vacuum distillation, drying to get pure intermediates 2;3 g (3.93 mmol) of pure intermediate 2 was treated with 0.24 g (2.45 mmol,Accounting for 4.86% of the total mass of the reactants) was reacted with 1.7 g (8.5 mmol) of polyethylene glycol 200 under concentrated sulfuric acid for 6 h,The reaction temperature is 140 , and finally the product - heptamethyltrisiloxane double head base Gemini type superplasticizer S-1 has the molecular structure of m = 2, n = 4. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
10.0 g (0.045 mol) of heptamethotrisiloxane and 4.8 g (0.067 mol) of acrylic acid were added to a 100 ml glass flask, and the reaction was carried out at a reaction temperature of 85 C under a reaction of a chloroplatinic acid catalyst having a concentration of 20 ppm Time is 48h, the first step 1 is obtained. After vacuum distillation, extraction and vacuum drying are carried out to obtain pure intermediate 1;12.0 g (0.041 mol) of pure intermediate 1 was added 0.04 g (0.36 mmol,Accounting for 0.205% of the total mass of the reactants.) The polymerization inhibitor hydroquinone was reacted with 7.5 g (0.037 mol) of butanediol diglycidyl ether at 100 C for 12 h,The second step 2 was obtained by the addition of 0.015 g (0.047 mmol, 0.077% of the total mass of the reactants) catalyst tetrabutylammonium bromide, and then distilled under reduced pressure to obtain pure intermediate 2,3 g (3.8 mmol) of pure intermediate 2 was reacted with 3.15 g (7.9 mmol) of polyethylene glycol 400 under a concentration of 0.31 g (3.2 mmol, 4.80% of the total mass of the reactants) under concentrated sulfuric acid for 6 h, the reaction temperature Is 140 C, and finally the product - heptamethyltrisiloxane double head group Gemini type ultra wetting agent S-2 has a molecular structure of m = 4, n = 9. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
To a 100 ml glass flask was added 10.0 g (0.045 mol) of heptamethyltrisiloxane and4.8 g (0.067 mol) of acrylic acid was added at a reaction temperature of 80 C for 48 h at a concentration of 20 ppm of chloroplatinic acid catalyst to obtain a first step of the intermediate, which was subjected to vacuum distillation, extraction and vacuum drying to give Pure intermediates;10.04 g of 0.04 g (0.36 mmol, 0.224% of the total mass of the reactants) was added to 10.0 g (0.034 mol) of pure intermediate 1 and 3 g of hydroquinone was mixed with 7.8 g (0.034 mol)1.6-hexanediol diglycidyl ether was reacted dropwise at 100 C for 14 h,Adding 0.015 g (0.047 mmol, 0.084% of the total mass of the reactants) catalyst tetrabutylammonium bromide to give the second step of the intermediate, respectively, after vacuum distillation, drying to obtain pure intermediates;3 g (3.66 mmol) of pure intermediate 2 was reacted with 4.4 g (7.33 mmol) of polyethylene glycol 600 for 6 h under concentrated sulfuric acid catalyzed by 0.37 g (3.77 mmol, 4.76% of the total mass of the reactants) for 6 h, the reaction temperature Was 140 C, and finally the product - heptamethyltrisiloxane double head group Gemini type ultra wetting agent S-3 had a molecular structure of m = 6, n = 13. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
43% | With zirconium(IV) oxide; ethyl chloromethyl ether; In chloroform-d1; at 20℃; for 4h;Schlenk technique; Inert atmosphere; | General procedure: Cobalt chloride · THF 1.5 (2.4 mg, 5 mol%) was placed in a Schlenk tube in an argon atmosphere glove box. Then dichloromethane (2 mL),Ethoxydimethylphenylsilane (40 μL, 0.2 mmol) and chloromethyl methyl ether (46 μL, 0.6 mmol) were added and stirred at room temperature (20 C.) for 1 hour.Thereafter, it was filtered through a glass fiber filter (ADVANTEC, GA-100) and washed with dichloromethane. The filtrate was taken out of the glove box and concentrated under high vacuum. After mesitylene (internal standard, 8 μL, 0.0575 mmol) was added, 1 H NMR (CDCl 3) was measured to show that chlorodimethylphenylsilane was produced in a 70% yield.confirmed. |
Tags: 107-51-7 synthesis path| 107-51-7 SDS| 107-51-7 COA| 107-51-7 purity| 107-51-7 application| 107-51-7 NMR| 107-51-7 COA| 107-51-7 structure
[ 2895-07-0 ]
1,1,1,3,3,5,5-Heptamethyltrisiloxane
Similarity: 1.00
[ 141-62-8 ]
1,1,1,3,3,5,5,7,7,7-Decamethyltetrasiloxane
Similarity: 0.95
[ 107-52-8 ]
1,1,1,3,3,5,5,7,7,9,9,11,11,11-Tetradecamethylhexasiloxane
Similarity: 0.95
[ 1873-88-7 ]
1,1,1,3,5,5,5-Heptamethyltrisiloxane
Similarity: 0.95
[ 16066-09-4 ]
1,1,1,3,5,7,7,7-Octamethyltetrasiloxane
Similarity: 0.91
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