2,3-dichlorobenzonitrile

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

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

Procedure: The product from Example 56B (1.7 g, 10 mmol) was treated with 1 eq of methyl thioglycolate and 1 eq sodium carbonate in methanol as described in Example 41A to give after chromatography (4:1 hexane/EtOAc) the title compound in 12% yield. 1H NMR (300 MHz, CDCl3) d 3.81 (s, 3H), 5.90 (bs, 2H), 7.34 (t, J=8 Hz, 1H), 7.48 (dd, J=8.1 Hz, 1H), 7.56 (dd, J=8,1 Hz, 1H). MS (DCI/NH3) m/e 259 (M+NH4)+.

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Conc. H2SO4 (1.365 L) and water (4.5 L) were charged into a suitable round bottom flak and the solution was cooled to 0° C. 2,3-Dichloroaniline (650 g, 4.012 moles) was added to the above solution and the reaction mixture was cooled and maintained at 0° C. A saturated solution of sodium nitrite (332.22 g, 4.815 moles) was added dropwise to the reaction while maintaining the temperature below 5° C. The reaction mixture was stirred at 0-5° C. for 1 hr and neutralised with sodium hydroxide at 0-5° C. The neutral solution was added dropwise to the cyanide solution [Cyanide solution obtained by mixing Cu(one)CN (365 g, 4.10 moles), NaCN (340 g 6.93 moles) and water (1.0 L)] at 65° C., under vigorous stirring for a period of 15 mins. The reaction mixture was warmed to 70° C. and stirred for another 15 mins. The 2,3-dichlorobenzonitrile so formed was extracted using ethylacetate (2.0 L). The organic layer was died over sodium sulfate and stripped to give a semi-solid mass of 2,3-dichlorobenzonitile (C6H3Cl2CN). the reaction mixture was cooled maintained at 0° C while maintaining the temperature below 5° C The reaction mixture was warmed to 70° C. stirred for another 15 mins

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Conc. H2SO4 (1.365 L) and water (4.5 L) were charged into a suitable round bottom flak and the solution was cooled to 0° C. 2,3-Dichloroaniline (650 g, 4.012 moles) was added to the above solution and the reaction mixture was cooled and maintained at 0° C. A saturated solution of sodium nitrite (332.22 g, 4.815 moles) was added dropwise to the reaction while maintaining the temperature below 5° C. The reaction mixture was stirred at 0-5° C. for 1 hr and neutralised with sodium hydroxide at 0-5° C. The neutral solution was added dropwise to the cyanide solution [Cyanide solution obtained by mixing Cu(one)CN (365 g, 4.10 moles), NaCN (340 g 6.93 moles) and water (1.0 L)] at 65° C., under vigorous stirring for a period of 15 mins. The reaction mixture was warmed to 70° C. and stirred for another 15 mins. The 2,3-dichlorobenzonitrile so formed was extracted using ethylacetate (2.0 L). The organic layer was died over sodium sulfate and stripped to give a semi-solid mass of 2,3-dichlorobenzonitile (C6H3Cl2CN). the reaction mixture was cooled maintained at 0° C while maintaining the temperature below 5° C The reaction mixture was warmed to 70° C. stirred for another 15 mins

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

Procedure: The product from Example 56B (1.7 g, 10 mmol) was treated with 1 eq of methyl thioglycolate and 1 eq sodium carbonate in methanol as described in Example 41A to give after chromatography (4:1 hexane/EtOAc) the title compound in 12% yield. 1H NMR (300 MHz, CDCl3) d 3.81 (s, 3H), 5.90 (bs, 2H), 7.34 (t, J=8 Hz, 1H), 7.48 (dd, J=8.1 Hz, 1H), 7.56 (dd, J=8,1 Hz, 1H). MS (DCI/NH3) m/e 259 (M+NH4)+.

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

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A 2.0 M solution of Al(CH3)3 in toluene (35 mL) was treated with 2,3-dichlorobenzonitrile (8.00 g, 37.2 mmol), azidotrimethylsilane (5.14 g, 44.6 mmol) slowly, and heated at 80° C. for 16 hours behind a blast shield. The mixture was cooled to 0° C. and treated with 2N HCl (100 mL) dropwise over 1 hour. The mixture was allowed to warm to ambient temperature and extracted twice with ethyl acetate (100 mL). The combined organic phases were dried over Na2SO4, filtered through a ½″ pad of silica gel, and the filtrate was evaporated under reduced pressure. The residue was purified by recrystallization from ethyl acetate/hexanes to provide the title compound. MS (DCI/NH3) m/z 215 (M)+; 1H NMR (DMSO-d6) δ 7.59 (t, 1H, J=8.0 Hz), 7.79 (dd, 1H, J=7.8, 1.7 Hz), 7.92 (dd, 1H, J=8.1, 1.7 Hz). The mixture was cooled to 0° C. to warm to ambient temperature extracted twice with ethyl acetate (100 mL) The combined organic phases were dried over Na2SO4 filtered through a ½″ pad of silica gel the filtrate was evaporated under reduced pressure The residue was purified by recrystallization from ethyl acetate/hexanes

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A 2.0 M solution of Al(CH3)3 in toluene (35 mL) was treated with 2,3-dichlorobenzonitrile (8.00 g, 37.2 mmol), azidotrimethylsilane (5.14 g, 44.6 mmol) slowly, and heated at 80° C. for 16 hours behind a blast shield. The mixture was cooled to 0° C. and treated with 2N HCl (100 mL) dropwise over 1 hour. The mixture was allowed to warm to ambient temperature and extracted twice with ethyl acetate (100 mL). The combined organic phases were dried over Na2SO4, filtered through a ½″ pad of silica gel, and the filtrate was evaporated under reduced pressure. The residue was purified by recrystallization from ethyl acetate/hexanes to provide the title compound. MS (DCI/NH3) m/z 215 (M)+; 1H NMR (DMSO-d6) δ 7.59 (t, 1H, J=8.0 Hz), 7.79 (dd, 1H, J=7.8, 1.7 Hz), 7.92 (dd, 1H, J=8.1, 1.7 Hz). The mixture was cooled to 0° C. to warm to ambient temperature extracted twice with ethyl acetate (100 mL) The combined organic phases were dried over Na2SO4 filtered through a ½″ pad of silica gel the filtrate was evaporated under reduced pressure The residue was purified by recrystallization from ethyl acetate/hexanes

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A 2.0 M solution of Al(CH3)3 in toluene (35 mL) was treated with 2,3-dichlorobenzonitrile (8.00 g, 37.2 mmol), azidotrimethylsilane (5.14 g, 44.6 mmol) slowly, and heated at 80° C. for 16 hours behind a blast shield. The mixture was cooled to 0° C. and treated with 2N HCl (100 mL) dropwise over 1 hour. The mixture was allowed to warm to ambient temperature and extracted twice with ethyl acetate (100 mL). The combined organic phases were dried over Na2SO4, filtered through a ½″ pad of silica gel, and the filtrate was evaporated under reduced pressure. The residue was purified by recrystallization from ethyl acetate/hexanes to provide the title compound. MS (DCI/NH3) m/z 215 (M)+; 1H NMR (DMSO-d6) δ 7.59 (t, 1H, J=8.0 Hz), 7.79 (dd, 1H, J=7.8, 1.7 Hz), 7.92 (dd, 1H, J=8.1, 1.7 Hz). The mixture was cooled to 0° C. to warm to ambient temperature extracted twice with ethyl acetate (100 mL) The combined organic phases were dried over Na2SO4 filtered through a ½″ pad of silica gel the filtrate was evaporated under reduced pressure The residue was purified by recrystallization from ethyl acetate/hexanes

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Conc. H2SO4 (1.365 L) and water (4.5 L) were charged into a suitable round bottom flak and the solution was cooled to 0° C. 2,3-Dichloroaniline (650 g, 4.012 moles) was added to the above solution and the reaction mixture was cooled and maintained at 0° C. A saturated solution of sodium nitrite (332.22 g, 4.815 moles) was added dropwise to the reaction while maintaining the temperature below 5° C. The reaction mixture was stirred at 0-5° C. for 1 hr and neutralised with sodium hydroxide at 0-5° C. The neutral solution was added dropwise to the cyanide solution [Cyanide solution obtained by mixing Cu(one)CN (365 g, 4.10 moles), NaCN (340 g 6.93 moles) and water (1.0 L)] at 65° C., under vigorous stirring for a period of 15 mins. The reaction mixture was warmed to 70° C. and stirred for another 15 mins. The 2,3-dichlorobenzonitrile so formed was extracted using ethylacetate (2.0 L). The organic layer was died over sodium sulfate and stripped to give a semi-solid mass of 2,3-dichlorobenzonitile (C6H3Cl2CN). the reaction mixture was cooled maintained at 0° C while maintaining the temperature below 5° C The reaction mixture was warmed to 70° C. stirred for another 15 mins

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

Procedure: The product from Example 56B (1.7 g, 10 mmol) was treated with 1 eq of methyl thioglycolate and 1 eq sodium carbonate in methanol as described in Example 41A to give after chromatography (4:1 hexane/EtOAc) the title compound in 12% yield. 1H NMR (300 MHz, CDCl3) d 3.81 (s, 3H), 5.90 (bs, 2H), 7.34 (t, J=8 Hz, 1H), 7.48 (dd, J=8.1 Hz, 1H), 7.56 (dd, J=8,1 Hz, 1H). MS (DCI/NH3) m/e 259 (M+NH4)+.