3-fluoro-2-methylbenzoyl chloride

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

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

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: To a mixture of 0.10 g of 6,7-dihydro-5-(4-amino-2-chlorobenzoyl)-5H-pyrrolo-[1,2-a][1,5]benzodiazepine and 0.06 g of triethylamine in 6 ml of dichloromethane is added 0.08 g of 3-fluoro-2-methylbenzoyl chloride in 0.5 ml of dichloromethane. The mixture is stirred for 2 hours at room temperature and then 2 ml of 1N NaOH added. The volatiles are evaporated under vacuum and the residue dissolved in 2 ml Of tetrahydrofuran and 1 ml of methanol. The mixture is stirred for 2 hours and evaporated and the residue diluted with 2 ml of 1N NaOH and 5 ml of water. The mixture is extracted with ethyl acetate (15 ml) and the extract washed with brine and dried (Na2SO4). The solvent is removed and the residue triturated with diethyl ether-hexane to give 0.15 g of white solid: Mass Spectrum (CI)474(M+H, Cl35); 476(M+H, Cl37). The volatiles are evaporated under vacuum the residue dissolved in 2 ml Of tetrahydrofuran The mixture is stirred for 2 hours evaporated the residue diluted with 2 ml of 1N NaOH and 5 ml of water The mixture is extracted with ethyl acetate (15 ml) the extract washed with brine dried (Na2SO4) The solvent is removed the residue triturated with diethyl ether-hexane

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

Procedure: To a mixture of 0.10 g of 6,7-dihydro-5-(4-amino-2-chlorobenzoyl)-5H-pyrrolo-[1,2-a][1,5]benzodiazepine and 0.06 g of triethylamine in 6 ml of dichloromethane is added 0.08 g of 3-fluoro-2-methylbenzoyl chloride in 0.5 ml of dichloromethane. The mixture is stirred for 2 hours at room temperature and then 2 ml of 1N NaOH added. The volatiles are evaporated under vacuum and the residue dissolved in 2 ml Of tetrahydrofuran and 1 ml of methanol. The mixture is stirred for 2 hours and evaporated and the residue diluted with 2 ml of 1N NaOH and 5 ml of water. The mixture is extracted with ethyl acetate (15 ml) and the extract washed with brine and dried (Na2SO4). The solvent is removed and the residue triturated with diethyl ether-hexane to give 0.15 g of white solid: Mass Spectrum (CI)474(M+H, Cl35); 476(M+H, Cl37). The volatiles are evaporated under vacuum the residue dissolved in 2 ml Of tetrahydrofuran The mixture is stirred for 2 hours evaporated the residue diluted with 2 ml of 1N NaOH and 5 ml of water The mixture is extracted with ethyl acetate (15 ml) the extract washed with brine dried (Na2SO4) The solvent is removed the residue triturated with diethyl ether-hexane

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

Procedure: To a solution of 0.25 g of 5,10-dihydro-5-(4-aminobenzoyl)-4H-pyrazolo[5,1-c][1,4]benzodiazepine and 0.0914 g of triethylamine in 6 ml of dichloromethane under argon is added a solution of 0.156 g of 3-fluoro-2-methylbenzoyl chloride in 1.5 ml of dichloromethane. The mixture is stirred overnight at room temperature and is washed with H2O and saturated NaHCO3. The organic layer is treated with activated carbon and filtered through magnesium sulfate. The filtrate is evaporated, ethyl acetate added and the solvent removed to give 0.38 g of white crystals, m.p. 245°-250° C.: Exact mass by mass spectrometry--441.1720(M+H). is washed with H2O and saturated NaHCO3 The organic layer is treated with activated carbon filtered through magnesium sulfate The filtrate is evaporated ethyl acetate added the solvent removed

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

Procedure: To a solution of 0.25 g of 5,10-dihydro-5-(4-aminobenzoyl)-4H-pyrazolo[5,1-c][1,4]benzodiazepine and 0.0914 g of triethylamine in 6 ml of dichloromethane under argon is added a solution of 0.156 g of 3-fluoro-2-methylbenzoyl chloride in 1.5 ml of dichloromethane. The mixture is stirred overnight at room temperature and is washed with H2O and saturated NaHCO3. The organic layer is treated with activated carbon and filtered through magnesium sulfate. The filtrate is evaporated, ethyl acetate added and the solvent removed to give 0.38 g of white crystals, m.p. 245°-250° C.: Exact mass by mass spectrometry--441.1720(M+H). is washed with H2O and saturated NaHCO3 The organic layer is treated with activated carbon filtered through magnesium sulfate The filtrate is evaporated ethyl acetate added the solvent removed

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

Procedure: A solution of 2.87 g of 3-fluoro-2-methyl-benzoic acid in 25 ml of thionyl chloride is refluxed for 1.75 hour and the excess thionyl chloride removed under vacuum. To the residue is added toluene (several times) and the toluene removed under vacuum after each addition to give 3-fluoro-2-methylbenzoyl chloride. the excess thionyl chloride removed under vacuum To the residue is added toluene (several times) the toluene removed under vacuum after each addition

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

Procedure: A solution of 2.87 g of 3-fluoro-2-methyl-benzoic acid in 25 ml of thionyl chloride is refluxed for 1.75 hour and the excess thionyl chloride removed under vacuum. To the residue is added toluene (several times) and the toluene removed under vacuum after each addition to give 3-fluoro-2-methylbenzoyl chloride. the excess thionyl chloride removed under vacuum To the residue is added toluene (several times) the toluene removed under vacuum after each addition

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

Procedure: To a mixture of 0.10 g of 6,7-dihydro-5-(4-amino-2-chlorobenzoyl)-5H-pyrrolo-[1,2-a][1,5]benzodiazepine and 0.06 g of triethylamine in 6 ml of dichloromethane is added 0.08 g of 3-fluoro-2-methylbenzoyl chloride in 0.5 ml of dichloromethane. The mixture is stirred for 2 hours at room temperature and then 2 ml of 1N NaOH added. The volatiles are evaporated under vacuum and the residue dissolved in 2 ml of tetrahydrofuran and 1 ml of methanol. The mixture is stirred for 2 hours and evaporated and the residue diluted with 2 ml of 1N NaOH and 5 ml of water. The mixture is extracted with ethyl acetate (15 ml) and the extract washed with brine and dried (Na2SO4). The solvent is removed and the residue triturated with diethyl ether-hexane to give 0.15 g of white solid: Mass Spectrum (CI)474(M+H, Cl35); 476(M+H, Cl37). The volatiles are evaporated under vacuum the residue dissolved in 2 ml of tetrahydrofuran The mixture is stirred for 2 hours evaporated the residue diluted with 2 ml of 1N NaOH and 5 ml of water The mixture is extracted with ethyl acetate (15 ml) the extract washed with brine dried (Na2SO4) The solvent is removed the residue triturated with diethyl ether-hexane

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

Procedure: To a solution of 0.25 g of 5,10-dihydro-5-(4-aminobenzoyl)-4H-pyrazolo[5,1-c][1,4]benzodiazepine and 0.0914 g of triethylamine in 6 ml of dichloromethane under argon is added a solution of 0.156 g of 3-fluoro-2-methylbenzoyl chloride in 1.5 ml of dichloromethane. The mixture is stirred overnight at room temperature and is washed with H2O and saturated NaHCO3. The organic layer is treated with activated carbon and filtered through magnesium sulfate. The filtrate is evaporated, ethyl acetate added and the solvent removed to give 0.38 g of white crystals, m.p. 245°-250° C.: Exact mass by mass spectrometry--441.1720(M+H). is washed with H2O and saturated NaHCO3 The organic layer is treated with activated carbon filtered through magnesium sulfate The filtrate is evaporated ethyl acetate added the solvent removed