chloro-dimethyl-octylsilane

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 1.95 g (80.2 mmol) of finely cut magnesium metal was placed in a 200 ml four-necked flask, and 50 ml of anhydrous tetrahydrofuran was further charged. The mixture was heated up to 70° C. while stirring, and 50 ml of a solution of 5 g (27.0 mmol) of 2-bromo p-xylene in anhydrous tetrahydrofuran was added dropwise while caring for steep reaction (reflux). After completion of the addition, it was refluxed for 30 minutes, then, cooled to 40° C., and to this was added 6.7 g (32.4 mmol) of dimethyloctylsilyl chloride while stirring. The solution was again heated and refluxed for 3 hours. The reaction mixture was charged in an aqueous saturated ammonium chloride solution, and extracted (toluene/water) and the organic phase was dried over sodium sulfate. After concentration, the product was purified and isolated by silica gel column chromatography (n-hexane) to obtain 3.19 g of 2-(dimethyloctylsilyl)-p-xylene. while caring for steep reaction (reflux) After completion of the addition, it was refluxed for 30 minutes cooled to 40° C. while stirring The solution was again heated refluxed for 3 hours extracted (toluene/water) the organic phase was dried over sodium sulfate After concentration the product was purified isolated by silica gel column chromatography (n-hexane)

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

Procedure: To a solution of 1-[3-(tert -butyldimethylsilanyl)prop-2-ynyl]-4-(1-hydroxy-2-phenylethyl)-6-iodo-3-methyl-1H-pyridin-2-one 4a (60 mg, 0.12 mmol) and 4-dimethylaminopyridine (2 mg, 1.2 μmol) in CH2Cl2 (2 mL) was added NEt3 (49 mg, 66 μL, 0.48 mmol) and chlorodimethyloctylsilane (62 mg, 77 μL, 0.3 mmol). The resulting mixture was stirred for 12 h. The solvent was evaporated and the residue was purified by flash chromatography (hexanes-EtOAc 15:1) to afford 5a (41 mg, 51%) as a yellow oil. 1H NMR (300 MHz, CDCl3) δ7.32-7.24 (m, 3H), 7.15-7.12 (m, 2H), 7.08 (s, 1H), 5.14 (d, J=17.0, 1H), 5.09 (d, J=17.0, 1H), 4.79 (t, J=6.4 Hz, 1H), 2.79 (d, J=6.4 Hz, 2H), 1.98 (s, 3H), 1.39-1.11 (m, 14H), 0.94 (s, 9H), 0.90-0.87 (m, 3H), 0.10 (s, 6H), −0.17 (s, 3H), −0.18 (s, 3H); 13C NMR (75 MHz, CDCl3) δ162.3, 152.0, 137.8, 129.7, 129.1, 128.3, 127.5, 127.2, 126.6, 118.6, 88.4, 44.6, 33.5, 32.0, 29.4, 29.3, 26.1, 23.2, 23.0, 22.7, 17.9, 16.5, 14.2, 12.0, −0.19, −2.05, −4.78. The solvent was evaporated the residue was purified by flash chromatography (hexanes-EtOAc 15:1)

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 123 g (1.1 mol) 1 -octene and 100 microliters of a 2% toluene solution of chloroplatinic acid were placed in a 500-mL four-neck flask equipped with a stirrer, thermometer, addition funnel, and condenser and were heated to 70° C. After the temperature had been raised, the heating mantle was removed and 94.5 g (1 mol) dimethylchlorosilane was added dropwise from the addition funnel. Heat generation was observed immediately, and the dropwise addition was carried out gradually so as to avoid having the temperature of the reaction solution exceed 80° C. After the completion of this addition, the reaction was continued for 30 minutes at 80° C. Gas chromatographic analysis of the resulting reaction solution gave 88% octyldimethylchlorosilane. The reaction solution was cooled to room temperature and 200 g toluene was introduced. The addition funnel was then replaced with a Teflon tube and ammonia was bubbled in until the pH of the reaction solution reached 10. The ammonium chloride product was removed by filtration, and the filtrate was then distillatively purified at 160° C./0.5 mmHg to obtain the following disilazane in a purity of 98 weight %. equipped with a stirrer thermometer, addition funnel, and condenser After the temperature had been raised the heating mantle was removed Heat generation the dropwise addition exceed 80° C After the completion of this addition Gas chromatographic analysis of the resulting reaction solution

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

Procedure: To a solution of 3.75 g (0.023 mole) 2,5-dichlorophenol in 30 ml N,N-dimethylformamide are added 5.58 g (0.082 mole) imidazole and 16.6 ml (0.070 mole) chlorodimethyloctyl silane under argon. After stirring at room temperature for two hours, the mixture is diluted with an aqueous saturated sodium chloride solution and extracted with ether. The combined organic extracts are dried and condensed. The product is purified by column chromatography. extracted with ether The combined organic extracts are dried condensed The product is purified by column chromatography

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

Procedure: To a solution of 3.75 g (0.023 mole) 2,5-dichlorophenol in 30 ml N,N-dimethylformamide are added 5.58 g (0.082 mole) imidazole and 16.6 ml (0.070 mole) chlorodimethyloctyl silane under argon. After stirring at room temperature for two hours, the mixture is diluted with an aqueous saturated sodium chloride solution and extracted with ether. The combined organic extracts are dried and condensed. The product is purified by column chromatography. extracted with ether The combined organic extracts are dried condensed The product is purified by column chromatography

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 1.95 g (80.2 mmol) of finely cut magnesium metal was placed in a 200 ml four-necked flask, and 50 ml of anhydrous tetrahydrofuran was further charged. The mixture was heated up to 70° C. while stirring, and 50 ml of a solution of 5 g (27.0 mmol) of 2-bromo p-xylene in anhydrous tetrahydrofuran was added dropwise while caring for steep reaction (reflux). After completion of the addition, it was refluxed for 30 minutes, then, cooled to 40° C., and to this was added 6.7 g (32.4 mmol) of dimethyloctylsilyl chloride while stirring. The solution was again heated and refluxed for 3 hours. The reaction mixture was charged in an aqueous saturated ammonium chloride solution, and extracted (toluene/water) and the organic phase was dried over sodium sulfate. After concentration, the product was purified and isolated by silica gel column chromatography (n-hexane) to obtain 3.19 g of 2-(dimethyloctylsilyl)-p-xylene. while caring for steep reaction (reflux) After completion of the addition, it was refluxed for 30 minutes cooled to 40° C. while stirring The solution was again heated refluxed for 3 hours extracted (toluene/water) the organic phase was dried over sodium sulfate After concentration the product was purified isolated by silica gel column chromatography (n-hexane)

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 1.95 g (80.2 mmol) of finely cut magnesium metal was placed in a 200 ml four-necked flask, and 50 ml of anhydrous tetrahydrofuran was further charged. The mixture was heated up to 70° C. while stirring, and 50 ml of a solution of 5 g (27.0 mmol) of 2-bromo p-xylene in anhydrous tetrahydrofuran was added dropwise while caring for steep reaction (reflux). After completion of the addition, it was refluxed for 30 minutes, then, cooled to 40° C., and to this was added 6.7 g (32.4 mmol) of dimethyloctylsilyl chloride while stirring. The solution was again heated and refluxed for 3 hours. The reaction mixture was charged in an aqueous saturated ammonium chloride solution, and extracted (toluene/water) and the organic phase was dried over sodium sulfate. After concentration, the product was purified and isolated by silica gel column chromatography (n-hexane) to obtain 3.19 g of 2-(dimethyloctylsilyl)-p-xylene. while caring for steep reaction (reflux) After completion of the addition, it was refluxed for 30 minutes cooled to 40° C. while stirring The solution was again heated refluxed for 3 hours extracted (toluene/water) the organic phase was dried over sodium sulfate After concentration the product was purified isolated by silica gel column chromatography (n-hexane)

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 1.95 g (80.2 mmol) of finely cut magnesium metal was placed in a 200 ml four-necked flask, and 50 ml of anhydrous tetrahydrofuran was further charged. The mixture was heated up to 70° C. while stirring, and 50 ml of a solution of 5 g (27.0 mmol) of 2-bromo p-xylene in anhydrous tetrahydrofuran was added dropwise while caring for steep reaction (reflux). After completion of the addition, it was refluxed for 30 minutes, then, cooled to 40° C., and to this was added 6.7 g (32.4 mmol) of dimethyloctylsilyl chloride while stirring. The solution was again heated and refluxed for 3 hours. The reaction mixture was charged in an aqueous saturated ammonium chloride solution, and extracted (toluene/water) and the organic phase was dried over sodium sulfate. After concentration, the product was purified and isolated by silica gel column chromatography (n-hexane) to obtain 3.19 g of 2-(dimethyloctylsilyl)-p-xylene. while caring for steep reaction (reflux) After completion of the addition, it was refluxed for 30 minutes cooled to 40° C. while stirring The solution was again heated refluxed for 3 hours extracted (toluene/water) the organic phase was dried over sodium sulfate After concentration the product was purified isolated by silica gel column chromatography (n-hexane)

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 123 g (1.1 mol) 1-octene and 100 microliters of a 2% toluene solution of chloroplatinic acid were placed in a 500-mL four-neck flask equipped with a stirrer, thermometer, addition funnel, and condenser and were heated to 70° C. After the temperature had been raised, the heating mantle was removed and 94.5 g (1 mol) dimethylchlorosilane was added dropwise from the addition funnel. Heat generation was observed immediately, and the dropwise addition was carried out gradually so as to avoid having the temperature of the reaction solution exceed 80° C. After the completion of this addition, the reaction was continued for 30 minutes at 80° C. Gas chromatographic analysis of the resulting reaction solution gave 88% octyldimethylchlorosilane. The reaction solution was cooled to room temperature and 200 g toluene was introduced. The addition funnel was then replaced with a Teflon tube and ammonia was bubbled in until the pH of the reaction solution reached 10. The ammonium chloride product was removed by filtration, and the filtrate was then distillatively purified at 160° C./0.5 mmHg to obtain the following disilazane in a purity of 98 weight %. ##STR4## equipped with a stirrer thermometer, addition funnel, and condenser After the temperature had been raised the heating mantle was removed Heat generation the dropwise addition exceed 80° C After the completion of this addition Gas chromatographic analysis of the resulting reaction solution

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 123 g (1.1 mol) 1-octene and 100 microliters of a 2% toluene solution of chloroplatinic acid were placed in a 500-mL four-neck flask equipped with a stirrer, thermometer, addition funnel, and condenser and were heated to 70° C. After the temperature had been raised, the heating mantle was removed and 94.5 g (1 mol) dimethylchlorosilane was added dropwise from the addition funnel. Heat generation was observed immediately, and the dropwise addition was carried out gradually so as to avoid having the temperature of the reaction solution exceed 80° C. After the completion of this addition, the reaction was continued for 30 minutes at 80° C. Gas chromatographic analysis of the resulting reaction solution gave 88% octyldimethylchlorosilane. The reaction solution was cooled to room temperature and 200 g toluene was introduced. The addition funnel was then replaced with a Teflon tube and ammonia was bubbled in until the pH of the reaction solution reached 10. The ammonium chloride product was removed by filtration, and the filtrate was then distillatively purified at 160° C./0.5 mmHg to obtain the following disilazane in a purity of 98 weight %. ##STR4## equipped with a stirrer thermometer, addition funnel, and condenser After the temperature had been raised the heating mantle was removed Heat generation the dropwise addition exceed 80° C After the completion of this addition Gas chromatographic analysis of the resulting reaction solution

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

Procedure: To a solution of 3.75 g (0.023 mole) 2,5-dichlorophenol in 30 ml N,N-dimethylformamide are added 5.58 g (0.082 mole) imidazole and 16.6 ml (0.070 mole) chlorodimethyloctyl silane under argon. After stirring at room temperature for two hours, the mixture is diluted with an aqueous saturated sodium chloride solution and extracted with ether. The combined organic extracts are dried and condensed. The product is purified by column chromatography. extracted with ether The combined organic extracts are dried condensed The product is purified by column chromatography

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 1.95 g (80.2 mmol) of finely cut magnesium metal was placed in a 200 ml four-necked flask, and 50 ml of anhydrous tetrahydrofuran was further charged. The mixture was heated up to 70° C. while stirring, and 50 ml of a solution of 5 g (27.0 mmol) of 2-bromo p-xylene in anhydrous tetrahydrofuran was added dropwise while caring for steep reaction (reflux). After completion of the addition, it was refluxed for 30 minutes, then, cooled to 40° C., and to this was added 6.7 g (32.4 mmol) of dimethyloctylsilyl chloride while stirring. The solution was again heated and refluxed for 3 hours. The reaction mixture was charged in an aqueous saturated ammonium chloride solution, and extracted (toluene/water) and the organic phase was dried over sodium sulfate. After concentration, the product was purified and isolated by silica gel column chromatography (n-hexane) to obtain 3.19 g of 2-(dimethyloctylsilyl)-p-xylene. while caring for steep reaction (reflux) After completion of the addition, it was refluxed for 30 minutes cooled to 40° C. while stirring The solution was again heated refluxed for 3 hours extracted (toluene/water) the organic phase was dried over sodium sulfate After concentration the product was purified isolated by silica gel column chromatography (n-hexane)