chloromethyl(triethoxy)silane

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:8.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: This example illustrates the preparation of a thiocarboxylate alkoxysilane from a salt of a thiolcarboxylic acid using a nonprotic solvent. 88 grams of powdered sodium ethoxide and 600 ml diglyme were charged into a one-liter, three-neck round bottomed flask equipped with magnetic stir bar, temperature probe/controller, heating mantle, addition funnel, condenser, N2 inlet, and ice water bath. The solution was cooled to 8° C., and 105 grams of thiolacetic acid was added slowly via the addition funnel, keeping the temperature below 60° C. The solution was allowed to cool to 35° C., and 250 grams of chloromethyltriethoxysilane was added via the addition funnel. After addition was complete, the solution was heated to 70° C., where a brief exotherm to 120° C. was observed. The solution was heated at 70° C. for an additional three hours. A white solid formed which was filtered first through a 0.1 μm pressure filter and then a 0.01 μm filter to give a clear, black solution. The solvent was removed under reduced pressure, and the remaining liquid vacuum distilled to yield 163 grams of a clear and colorless liquid, a 55 percent yield. equipped with magnetic stir bar temperature probe/controller, heating mantle addition funnel, condenser, N2 inlet, and ice water bath the temperature below 60° C to cool to 35° C. After addition the solution was heated to 70° C. to 120° C. The solution was heated at 70° C. for an additional three hours A white solid formed which was filtered first through a 0.1 μm pressure filter a 0.01 μm filter to give a clear, black solution The solvent was removed under reduced pressure the remaining liquid vacuum distilled to yield 163 grams of a clear and colorless liquid

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Si(O-n-C3H7)4; Si(O—isoC3H7)4; Si(OC2H4OCH3)4; CH3Si(OCH3)3; CH2═CHSi(OCH3)3; CH3Si(OC2H4OCH3)3; ClCH2Si(OC2H5)3; CH2═CHSi(OC2H4OCH3)3.

Conditions: temp:110.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 905.3 g (10.5 mol) of piperazine and 945 ml of xylene (anhydrous) as solvent are charged to a 4 liter 4-neck flask and subsequently innertized with nitrogen. The batch is heated to a temperature of 100° C., in the course of which the piperazine dissolves completely. Added dropwise at this temperature are 446.3 g (2.1 mol) of chloromethyltriethoxysilane, over the course of 1 h with thorough stirring. Following the addition of about ⅓ of the amount of silane, piperazine hydrochloride is precipitated as a salt, but the suspension remains readily stirrable until the end of the reaction. After the end of the addition, stirring is continued for a further 15 min. Subsequently the reaction mixture is heated to 110° C. and the precipitated salt is filtered off on a preheated filter. dissolves completely Added dropwise at this temperature over the course of 1 h is precipitated as a salt the suspension remains readily stirrable until the end of the reaction After the end of the addition the precipitated salt is filtered off on a preheated filter

Conditions: temp:8.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: This example illustrates the preparation of a thiocarboxylate alkoxysilane from a salt of a thiolcarboxylic acid using a nonprotic solvent. 88 grams of powdered sodium ethoxide and 600 ml diglyme were charged into a one-liter, three-neck round bottomed flask equipped with magnetic stir bar, temperature probe/controller, heating mantle, addition funnel, condenser, N2 inlet, and ice water bath. The solution was cooled to 8° C., and 105 grams of thiolacetic acid was added slowly via the addition funnel, keeping the temperature below 60° C. The solution was allowed to cool to 35° C., and 250 grams of chloromethyltriethoxysilane was added via the addition funnel. After addition was complete, the solution was heated to 70° C., where a brief exotherm to 120° C. was observed. The solution was heated at 70° C. for an additional three hours. A white solid formed which was filtered first through a 0.1 μm pressure filter and then a 0.01 μm filter to give a clear, black solution. The solvent was removed under reduced pressure, and the remaining liquid vacuum distilled to yield 163 grams of a clear and colorless liquid, a 55 percent yield. equipped with magnetic stir bar temperature probe/controller, heating mantle addition funnel, condenser, N2 inlet, and ice water bath the temperature below 60° C to cool to 35° C. After addition the solution was heated to 70° C. to 120° C. The solution was heated at 70° C. for an additional three hours A white solid formed which was filtered first through a 0.1 μm pressure filter a 0.01 μm filter to give a clear, black solution The solvent was removed under reduced pressure the remaining liquid vacuum distilled to yield 163 grams of a clear and colorless liquid

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Si(O-n-C3H7)4; Si(O—isoC3H7)4; Si(OC2H4OCH3)4; CH3Si(OCH3)3; CH2═CHSi(OCH3)3; CH3Si(OC2H4OCH3)3; ClCH2Si(OC2H5)3; CH2═CHSi(OC2H4OCH3)3.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Si(O-n-C3H7)4; Si(O—isoC3H7)4; Si(OC2H4OCH3)4; CH3Si(OCH3)3; CH2═CHSi(OCH3)3; CH3Si(OC2H4OCH3)3; ClCH2Si(OC2H5)3; CH2═CHSi(OC2H4OCH3)3.

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 3.32 g (20 mmol) of 2,3,5,6-tetrafluorophenol are dissolved in 50 ml of toluene, and 8 ml of n-butyllithium (2.5 M in hexane) are added at 0° C. After warming to room temperature, the solution is stirred for a further 2 hours. Then 4.3 g of (chloromethyl)triethoxysilane (20 mmol) are added dropwise and the reaction mixture is boiled under reflux for 6 hours. The resulting suspension is filtered and the solvent is stripped off in vacuo. The pale yellow liquid which remains is subjected to fractional distillation. under reflux for 6 hours The resulting suspension is filtered The pale yellow liquid which remains is subjected to fractional distillation

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 3.32 g (20 mmol) of 2,3,5,6-tetrafluorophenol are dissolved in 50 ml of toluene, and 8 ml of n-butyllithium (2.5 M in hexane) are added at 0° C. After warming to room temperature, the solution is stirred for a further 2 hours. Then 4.3 g of (chloromethyl)triethoxysilane (20 mmol) are added dropwise and the reaction mixture is boiled under reflux for 6 hours. The resulting suspension is filtered and the solvent is stripped off in vacuo. The pale yellow liquid which remains is subjected to fractional distillation. under reflux for 6 hours The resulting suspension is filtered The pale yellow liquid which remains is subjected to fractional distillation