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Chemical Structure| 5931-17-9 Chemical Structure| 5931-17-9

Structure of 5931-17-9

Chemical Structure| 5931-17-9

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Product Details of [ 5931-17-9 ]

CAS No. :5931-17-9
Formula : C12H30O3Si2
M.W : 278.54
SMILES Code : C[Si](C)(CCCCO)O[Si](C)(CCCCO)C
MDL No. :MFCD00039554
InChI Key :OWJKJLOCIDNNGJ-UHFFFAOYSA-N
Pubchem ID :2769346

Safety of [ 5931-17-9 ]

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319
Precautionary Statements:P264-P280-P302+P352-P337+P313-P305+P351+P338-P362+P364-P332+P313

Application In Synthesis of [ 5931-17-9 ]

* 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.

  • Downstream synthetic route of [ 5931-17-9 ]

[ 5931-17-9 ] Synthesis Path-Downstream   1~5

  • 1
  • [ 1112-39-6 ]
  • [ 5931-17-9 ]
  • [ 6843-66-9 ]
  • [ 67-56-1 ]
  • poly(dimethylsiloxane-co-diphenylsiloxane) [ No CAS ]
YieldReaction ConditionsOperation in experiment
With hydrogenchloride; water; for 2h;Heating / reflux; 1,3-bis (hydroxybutyl) tetramethyl disiloxane (33.70 g, 0.118 mole),dimethyidimethoxysilane (403.18 g, 3.25 moles) anddiphenyidimethoxysilane <Desc/Clms Page number 14>(272.33 g, 1. 08 moles) were added in a one-liter round bottom flask. Water (78.29 g) and concentrated hydrochloric acid (11.9 mL) were then slowly added to the flask. The contents of the flask wererefluxed for one hour. Methanol (253.3 mL) was distilled from the contents. Water (160 mL) and concentrated hydrochloric acid (130 mL) was added to the flask. The contents of the flask were refluxed for one hour. The contents of the flask were then poured into a separatory funnel. The silicone layer was separated, diluted with 500 mL ether and washed once with 250 mL water, twice with 250 mL 5-percent sodium bicarbonate aqueous solution and twice with 250 mL water. The final organic layer was dried with magnesium sulfate, and then vacuum stripped at 80 degrees Celsius (0.1 mm Hg) to give the crude product. The crude product was then dissolved in 50/50cyclohexane/methylene chloride and then passed through a silica gel column with the same solvent mixture. The final product was collected in tetrahydrofuran (THF) by passing THF through the silica gel column. The THF fractions were combined, dried and vacuum stripped to give the final product. Size Exclusion Chromatography (SEC) measurements of the final product indicated less than three percent cyclics and a molecular weight of 2821 by titration.
  • 2
  • [ 1112-39-6 ]
  • [ 5931-17-9 ]
  • [ 6843-66-9 ]
  • [ 67-56-1 ]
  • hydroxybutyl-terminated copolymer of dimethylsiloxane and diphenylsiloxane [ No CAS ]
YieldReaction ConditionsOperation in experiment
With hydrogenchloride; In water; for 2h;Heating / reflux; 1,3-bis(hydroxybutyl)tetramethyl disiloxane (33.70 g, 0.118 mole), dimethyldimethoxysilane (403.18 g, 3.25 moles) and <strong>[6843-66-9]<strong>[6843-66-9]diphenyldimethoxysilan</strong>e</strong> (272.33 g, 1.08 moles) were added in a one-liter round bottom flask. Water (78.29 g) and concentrated hydrochloric acid (11.9 mL) were then slowly added to the flask. The contents of the flask were refluxed for one hour. Methanol (253.3 mL) was distilled from the contents. Water (160 mL) and concentrated hydrochloric acid (130 mL) was added to the flask. The contents of the flask were refluxed for one hour. The contents of the flask were then poured into a separatory funnel. The silicone layer was separated, diluted with 500 mL ether and washed once with 250 mL water, twice with 250 mL 5-percent sodium bicarbonate aqueous solution and twice with 250 mL water. The final organic layer was dried with magnesium sulfate, and then vacuum stripped at 80 degrees Celsius (0.1 mm Hg) to give the crude product. The crude product was then dissolved in 50/50 cyclohexane/methylene chloride and then passed through a silica gel column with the same solvent mixture. The final product was collected in tetrahydrofuran (THF) by passing THF through the silica gel column. The THF fractions were combined, dried and vacuum stripped to give the final product. Size exclusion chromatography (SEC) measurements of the final product indicated less than three percent cyclics and a molecular weight of 2821 by titration.
  • 3
  • [ 1112-39-6 ]
  • [ 5931-17-9 ]
  • [ 6843-66-9 ]
  • hydroxybutyl-terminated copolymer of dimethylsiloxane and diphenylsiloxane with a 27:9 ratio of methyl/phenyl and a molecular weight of 4000 [ No CAS ]
YieldReaction ConditionsOperation in experiment
The preparation procedure, ingredients and ingredient feed ratio used in the present example were the same as those of Example 1, except preparative SEC was used to purify the crude product. In so doing, the crude product was dissolved in THF (10% w/v) and passed through a preparative SEC unit. The final product, after stripping off all solvent, was over 97 percent pure, with less than 3 percent cyclic impurities. The molecular weight of the final product as determined by titration was 4158.
  • 4
  • [ 1112-39-6 ]
  • [ 5931-17-9 ]
  • [ 3027-21-2 ]
  • hydroxybutyl-terminated copolymer of dimethylsiloxane and phenylmethylsiloxane with a 1:3 ratio of total methyl to phenyl attached to silicon and molecular weight of 4000 [ No CAS ]
YieldReaction ConditionsOperation in experiment
In the present example, the same procedure was employed as that of Example 1, except that the amounts of ingredients used were varied. In the present example, 4-bis(4-hydroxybutyl)tetramethyldisiloxane (19.08 g, 0.0686 mole), dimethoxydimethylsilane (151.67 g, 1.223 mole) and dimethoxyphenylmethylsilane (222.24 g, 1.219 mole) were used. The crude product, after dried, was passed through a preparative SEC column with a 10percent w/v THF solution (190 mL inject). The purified product was over 97 percent pure with a molecular weight of 4490.
  • 5
  • [ 5931-17-9 ]
  • [ 3027-21-2 ]
  • [ 67-56-1 ]
  • hydroxybutyl-terminated polymethylsiloxane with fifty percent phenyl content [ No CAS ]
YieldReaction ConditionsOperation in experiment
100% With hydrogenchloride; In water; for 4.5h;Heating / reflux; 1,3-bis(hydroxybutyl)tetramethyldisiloxane (13.18 g, 0.474 mole) and dimethoxyphenylmethylsilane (238.08 g, 1.306 moles) were added to a one-liter round bottom flask. Water (23.58 g or 1.31 mole) and concentrated hydrochloric acid (4.8 mL) were then slowly added to the flask and the contents refluxed at 70 degrees Celsius for one hour. After refluxing, methanol (69.2 g) was distilled from the flask and 44 mL of water and 44 mL of concentrated hydrochloric acid were added to the reaction mixture. The contents of the flask were then refluxed for 3.5 hours prior to being poured into a separatory funnel. The silicone layer was separated, diluted with 500-mL ether and washed twice with 100-ml water, twice with 100 mL five percent sodium bicarbonate aqueous solution and twice with 250-mL water. The final organic layer was dried with magnesium sulfate, and then vacuum stripped at 80 degrees Celsius (0.1 mm Hg) to give a clear viscous crude product. The crude product was then purified by silica gel column chromatography using the same method as described in Example 1 above. The THF solutions containing product were combined and dried with magnesium sulfate. The solvent was vacuum stripped to give the final product. The molecular weight of the final product as determined by titration was 2,697.
 

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