2-Oxoquazepam

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

Procedure: Reflux 1.13 g. (0.0025 moles) of 2-[2-bromo-N-(2,2,2-trifluoroethyl)-acetamido]-5-chloro-2'-fluorobenzophenone, 1.4 g. (0.01 mole) of hexamethylenetetramine, and 0.98 g. (0.01 moles) of ammonium bromide together for 43/4 hours. Pour the reaction mixture into water and extract with dichloromethane. Dry the dichloromethane solution over anhydrous sodium sulfate, filter and evaporate. After recrystallization, the so-obtained 7-chloro-1,3-dihydro-1-(2,2,2-trifluoroethyl)-5-(2'fluorophenyl)-2H-1,4-benzodiazepin-2-one melts at 123°-125° C. Thin layer chromatography shows the product to be pure single spot material. Reflux 1.13 g 4 hours extract with dichloromethane Dry the dichloromethane solution over anhydrous sodium sulfate filter evaporate After recrystallization

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

Procedure: Reflux 1.13 g. (0.0025 moles) of 2-[2-bromo-N-(2,2,2-trifluoroethyl)-acetamido]-5-chloro-2'-fluorobenzophenone, 1.4 g. (0.01 mole) of hexamethylenetetramine, and 0.98 g. (0.01 moles) of ammonium bromide together for 43/4 hours. Pour the reaction mixture into water and extract with dichloromethane. Dry the dichloromethane solution over anhydrous sodium sulfate, filter and evaporate. After recrystallization, the so-obtained 7-chloro-1,3-dihydro-1-(2,2,2-trifluoroethyl)-5-(2'fluorophenyl)-2H-1,4-benzodiazepin-2-one melts at 123°-125° C. Thin layer chromatography shows the product to be pure single spot material. Reflux 1.13 g 4 hours extract with dichloromethane Dry the dichloromethane solution over anhydrous sodium sulfate filter evaporate After recrystallization

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

Procedure: Reflux 1.13 g. (0.0025 moles) of 2-[2-bromo-N-(2,2,2-trifluoroethyl)-acetamido]-5-chloro-2'-fluorobenzophenone, 1.4 g. (0.01 mole) of hexamethylenetetramine, and 0.98 g. (0.01 moles) of ammonium bromide together for 43/4 hours. Pour the reaction mixture into water and extract with dichloromethane. Dry the dichloromethane solution over anhydrous sodium sulfate, filter and evaporate. After recrystallization, the so-obtained 7-chloro-1,3-dihydro-1-(2,2,2-trifluoroethyl)-5-(2'fluorophenyl)-2H-1,4-benzodiazepin-2-one melts at 123°-125° C. Thin layer chromatography shows the product to be pure single spot material. Reflux 1.13 g 4 hours extract with dichloromethane Dry the dichloromethane solution over anhydrous sodium sulfate filter evaporate After recrystallization

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

Procedure: Reflux 1.13 g. (0.0025 moles) of 2-[2-bromo-N-(2,2,2-trifluoroethyl)-acetamido]-5-chloro-2'-fluorobenzophenone, 1.4 g. (0.01 mole) of hexamethylenetetramine, and 0.98 g. (0.01 moles) of ammonium bromide together for 43/4 hours. Pour the reaction mixture into water and extract with dichloromethane. Dry the dichloromethane solution over anhydrous sodium sulfate, filter and evaporate. After recrystallization, the so-obtained 7-chloro-1,3-dihydro-1-(2,2,2-trifluoroethyl)-5-(2'fluorophenyl)-2H-1,4-benzodiazepin-2-one melts at 123°-125° C. Thin layer chromatography shows the product to be pure single spot material. Reflux 1.13 g 4 hours extract with dichloromethane Dry the dichloromethane solution over anhydrous sodium sulfate filter evaporate After recrystallization