tributyl(chloro)silane

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

Procedure: 1-Bromo-3-tri-n-butylsilanyl-benzene is prepared in a manner analogous to the procedure described in examples 1 and 1a utilizing 1,3-dibromobenzene and chloro-tri-n-butylsilane as the ClSiR1R2R3 compound.

Conditions: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A flask equipped with a dry ice condenser was flame dried under a nitrogen sream, and charged with 5.0 g (20 mmol) of chlorotri-n-butylsilane and 10 mL of dichloromethane. After cooling the resulting solution to -78° C. and charging the condenser with dry ice and acetone, 6.2 mL (66 mmol) of bromotrifluoromethane (Freon 13B1) that had been condensed into a graduated tube was warmed to room temperature and allowed to distill into the flask. The cooling bath was removed and the mixture was allowed to warm to the temperature of the refluxing Freon (-59°C.). To this cold solution was added, dropwise, 8.0 mL (29 mmol) of hexaethylphosphorous triamide. The resulting solution was stirred at reflux for 1 hour. Removal of the condenser and continued stirring for 1 hour resulted in evaporation of excess Freon and warming of the solution to room temperature. Dilution with 30 mL of dichloromethane, water (three 30 mL portions) and 1N HCl (two 30 mL portions) washing, drying (MgSO4), and concentration afforded a residue which was short path distilled to give 3.6 g (64% yield) of tri-n-butyltrifluoromethylsilane: bp 53°-58° C. at 0.5 torr; 1H NMR (CDCl3) δ 0.60-1.10 (m, 5H), 1.10-1.56 (m, 4H); 19F NMR (CDCl3, relative to CFCl3) -61.6 ppm (s); IR (neat) 2956, 2925, 2872, 1214, 1058 cm-1 ; mass spectrum (70 eV) m/z (relative intensity) 199 (30, M-CF3), 143 (80), 105 (30), 101 (27), 87 (30), 77 (66), 63 (43), 59 (41), 55 (54), 47 (25), 43 (20), 41 (100). Anal. Calcd. for C13H27F3Si: C, 58.16; H, 10.14. Found: C, 58.26; H, 10.09. A flask equipped with a dry ice condenser was flame dried under a nitrogen sream condensed into a graduated tube was warmed to room temperature to distill into the flask The cooling bath was removed to warm to the temperature of the refluxing Freon (-59°C.) To this cold solution was added at reflux for 1 hour Removal of the condenser continued stirring for 1 hour resulted in evaporation of excess Freon warming of the solution to room temperature Dilution with 30 mL of dichloromethane, water (three 30 mL portions) and 1N HCl (two 30 mL portions) washing drying (MgSO4), and concentration afforded a residue which distilled

Conditions: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A flask equipped with a dry ice condenser was flame dried under a nitrogen sream, and charged with 5.0g (20 mmol) of chloro -tri-n-butylsilane and 10 mL of dichloromethane. After cooling the resulting solution to -78° C. and charging the condenser with dry ice and acetone, 6.2 mL (66 mmol) of bromotrifluoromethane (Freon 13B1) that had been condensed into a graduated tube was warmed to room temperature and allowed to distill into the flask. The cooling bath was removed and the mixture was allowed to warm to the temperature of the refluxing Freon (-59° C.). To this cold solution was added, dropwise, 8.0 mL (29 mmol) of hexaethylphosphorous triamide. The resulting solution was stirred at reflux for 1 hour. Removal of the condenser and continued stirring for 1 hour resulted in evaporation of excess Freon and warming of the solution to room temperature. Dilution with 30 mL of dichloromethane, water (three 30 mL portions) and lN HCl (two 30 mL portions) washing, drying (MgSO4), and concentration afforded a residue which was short path distilled to give 3.6g (64% yield) of tri-n-butyltrifluoromethylsilane: bp 53-58° C. at 0.5 torr; 1H NMR (CDCl3) δ 0.60-1.10 (m, 5H), 1.10-1.56 (m, 4H); 19F NMR (CDCl3, relative to CFCl3) -61.6 ppm (s); IR (neat) 2956, 2925, 2872, 1214, 1058 cm-1; mass spectrum (70 eV) m/z (relatiVe intensity) 199 (30, M-CF3), 143 (80), 105 (30), 101 (27), 87 (30), 77 (66), 63 (43), 59 (41), 55 (54), 47 (25), 43 (20), 41 (100). Anal. Calcd. for C13H27F3Si: C, 58.16; H, 10.14. Found: C, 58.26; H, 10.09. A flask equipped with a dry ice condenser was flame dried under a nitrogen sream condensed into a graduated tube was warmed to room temperature to distill into the flask The cooling bath was removed to warm to the temperature of the refluxing Freon (-59° C.) To this cold solution was added at reflux for 1 hour Removal of the condenser continued stirring for 1 hour resulted in evaporation of excess Freon warming of the solution to room temperature Dilution with 30 mL of dichloromethane, water (three 30 mL portions) and lN HCl (two 30 mL portions) washing drying (MgSO4), and concentration afforded a residue which distilled

Conditions: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A flask equipped with a dry ice condenser was flame dried under a nitrogen sream, and charged with 5.0g (20 mmol) of chloro -tri-n-butylsilane and 10 mL of dichloromethane. After cooling the resulting solution to -78° C. and charging the condenser with dry ice and acetone, 6.2 mL (66 mmol) of bromotrifluoromethane (Freon 13B1) that had been condensed into a graduated tube was warmed to room temperature and allowed to distill into the flask. The cooling bath was removed and the mixture was allowed to warm to the temperature of the refluxing Freon (-59° C.). To this cold solution was added, dropwise, 8.0 mL (29 mmol) of hexaethylphosphorous triamide. The resulting solution was stirred at reflux for 1 hour. Removal of the condenser and continued stirring for 1 hour resulted in evaporation of excess Freon and warming of the solution to room temperature. Dilution with 30 mL of dichloromethane, water (three 30 mL portions) and lN HCl (two 30 mL portions) washing, drying (MgSO4), and concentration afforded a residue which was short path distilled to give 3.6g (64% yield) of tri-n-butyltrifluoromethylsilane: bp 53-58° C. at 0.5 torr; 1H NMR (CDCl3) δ 0.60-1.10 (m, 5H), 1.10-1.56 (m, 4H); 19F NMR (CDCl3, relative to CFCl3) -61.6 ppm (s); IR (neat) 2956, 2925, 2872, 1214, 1058 cm-1; mass spectrum (70 eV) m/z (relatiVe intensity) 199 (30, M-CF3), 143 (80), 105 (30), 101 (27), 87 (30), 77 (66), 63 (43), 59 (41), 55 (54), 47 (25), 43 (20), 41 (100). Anal. Calcd. for C13H27F3Si: C, 58.16; H, 10.14. Found: C, 58.26; H, 10.09. A flask equipped with a dry ice condenser was flame dried under a nitrogen sream condensed into a graduated tube was warmed to room temperature to distill into the flask The cooling bath was removed to warm to the temperature of the refluxing Freon (-59° C.) To this cold solution was added at reflux for 1 hour Removal of the condenser continued stirring for 1 hour resulted in evaporation of excess Freon warming of the solution to room temperature Dilution with 30 mL of dichloromethane, water (three 30 mL portions) and lN HCl (two 30 mL portions) washing drying (MgSO4), and concentration afforded a residue which distilled

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

Procedure: A mixture of ethyl 3-hydroxypicolinate (15 g, 900 mmol), tributylsilyl chloride (16.23 g, 110 mmol), imidazole (8.0 g, 120 mmol) in methylene chloride was stirred overnight under a nitrogen atmosphere. Water was added and the methylene chloride layer was separated and concentrated in vacuo. Purification on a silica gel column using ethyl acetate-hexane (1:4) as the eluant gave ethyl 3-(tributylsilyloxy)picolinate as a solid (20 g). the methylene chloride layer was separated concentrated in vacuo Purification on a silica gel column

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

Procedure: A mixture of ethyl 3-hydroxypicolinate (15 g, 900 mmol), tributylsilyl chloride (16.23 g, 110 mmol), imidazole (8.0 g, 120 mmol) in methylene chloride was stirred overnight under a nitrogen atmosphere. Water was added and the methylene chloride layer was separated and concentrated in vacuo. Purification on a silica gel column using ethyl acetate-hexane (1:4) as the eluant gave ethyl 3-(tributylsilyloxy)picolinate as a solid (20 g). the methylene chloride layer was separated concentrated in vacuo Purification on a silica gel column

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

Procedure: 1-Bromo-3-tri-n-butylsilanyl-benzene is prepared in a manner analogous to the procedure described in examples 1 and 1a utilizing 1,3-dibromobenzene and chloro-tri-n-butylsilane as the ClSiR1R2R3 compound.

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

Procedure: A mixture of ethyl 3-hydroxypicolinate (15 g, 900 mmol), tributylsilyl chloride (16.23 g, 110 mmol), imidazole (8.0 g, 120 mmol) in methylene chloride was stirred overnight under a nitrogen atmosphere. Water was added and the methylene chloride layer was separated and concentrated in vacuo. Purification on a silica gel column using ethyl acetate-hexane (1:4) as the eluant gave ethyl 3-(tributylsilyloxy)picolinate as a solid (20 g). the methylene chloride layer was separated concentrated in vacuo Purification on a silica gel column

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

Procedure: A mixture of ethyl 3-hydroxypicolinate (15 g, 900 mmol), tributylsilyl chloride (16.23 g, 110 mmol), imidazole (8.0 g, 120 mmol) in methylene chloride was stirred overnight under a nitrogen atmosphere. Water was added and the methylene chloride layer was separated and concentrated in vacuo. Purification on a silica gel column using ethyl acetate-hexane (1:4) as the eluant gave ethyl 3-(tributylsilyloxy)picolinate as a solid (20 g). the methylene chloride layer was separated concentrated in vacuo Purification on a silica gel column

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

Procedure: 1-Bromo-3-tri-n-butylsilanyl-benzene is prepared in a manner analogous to the procedure described in examples 1 and 1a utilizing 1,3-dibromobenzene and chloro-tri-n-butylsilane as the ClSiR1R2R3 compound.

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

Procedure: 1-Bromo-3-tri-n-butylsilanyl-benzene is prepared in a manner analogous to the procedure described in examples 1 and 1a utilizing 1,3-dibromobenzene and chloro-tri-n-butylsilane as the ClSiR1R2R3 compound.

Conditions: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A flask equipped with a dry ice condenser was flame dried under a nitrogen sream, and charged with 5.0 g (20 mmol) of chlorotri-n-butylsilane and 10 mL of dichloromethane. After cooling the resulting solution to -78° C. and charging the condenser with dry ice and acetone, 6.2 mL (66 mmol) of bromotrifluoromethane (Freon 13B1) that had been condensed into a graduated tube was warmed to room temperature and allowed to distill into the flask. The cooling bath was removed and the mixture was allowed to warm to the temperature of the refluxing Freon (-59°C.). To this cold solution was added, dropwise, 8.0 mL (29 mmol) of hexaethylphosphorous triamide. The resulting solution was stirred at reflux for 1 hour. Removal of the condenser and continued stirring for 1 hour resulted in evaporation of excess Freon and warming of the solution to room temperature. Dilution with 30 mL of dichloromethane, water (three 30 mL portions) and 1N HCl (two 30 mL portions) washing, drying (MgSO4), and concentration afforded a residue which was short path distilled to give 3.6 g (64% yield) of tri-n-butyltrifluoromethylsilane: bp 53°-58° C. at 0.5 torr; 1H NMR (CDCl3) δ 0.60-1.10 (m, 5H), 1.10-1.56 (m, 4H); 19F NMR (CDCl3, relative to CFCl3) -61.6 ppm (s); IR (neat) 2956, 2925, 2872, 1214, 1058 cm-1 ; mass spectrum (70 eV) m/z (relative intensity) 199 (30, M-CF3), 143 (80), 105 (30), 101 (27), 87 (30), 77 (66), 63 (43), 59 (41), 55 (54), 47 (25), 43 (20), 41 (100). Anal. Calcd. for C13H27F3Si: C, 58.16; H, 10.14. Found: C, 58.26; H, 10.09. A flask equipped with a dry ice condenser was flame dried under a nitrogen sream condensed into a graduated tube was warmed to room temperature to distill into the flask The cooling bath was removed to warm to the temperature of the refluxing Freon (-59°C.) To this cold solution was added at reflux for 1 hour Removal of the condenser continued stirring for 1 hour resulted in evaporation of excess Freon warming of the solution to room temperature Dilution with 30 mL of dichloromethane, water (three 30 mL portions) and 1N HCl (two 30 mL portions) washing drying (MgSO4), and concentration afforded a residue which distilled