2-(difluoromethyl)piperazine

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

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

Procedure: The above 100 mg of 3-difluoromethylpiperazine and 200 mg of 1-ethyl-1,4-dihydro-6,7,8-trifluoro-4-oxo-3-quinolinecarboxylic acid in 5 ml of pyridine was stirred at 75° C. overnight, then cooled and the solvent- removed in vacuo. The residue was triturated in a hot methanol/chloroform mixture and then purified by chromatography on silica gel, eluting with methanol:dichloromethane (5:95), giving 90 mg of the desired product, mp 212°-227° C. (dec.) cooled the solvent- removed in vacuo The residue was triturated in a hot methanol/chloroform mixture purified by chromatography on silica gel eluting with methanol:dichloromethane (5:95)

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

Procedure: The above 100 mg of 3-difluoromethylpiperazine and 200 mg of 1-ethyl-1,4-dihydro-6,7,8-trifluoro-4-oxo-3-quinolinecarboxylic acid in 5 ml of pyridine was stirred at 75° C. overnight, then cooled and the solvent- removed in vacuo. The residue was triturated in a hot methanol/chloroform mixture and then purified by chromatography on silica gel, eluting with methanol:dichloromethane (5:95), giving 90 mg of the desired product, mp 212°-227° C. (dec.) cooled the solvent- removed in vacuo The residue was triturated in a hot methanol/chloroform mixture purified by chromatography on silica gel eluting with methanol:dichloromethane (5:95)

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

Procedure: The above 100 mg of 3-difluoromethylpiperazine and 200 mg of 1-ethyl-1,4-dihydro-6,7,8-trifluoro-4-oxo-3-quinolinecarboxylic acid in 5 ml of pyridine was stirred at 75° C. overnight, then cooled and the solvent- removed in vacuo. The residue was triturated in a hot methanol/chloroform mixture and then purified by chromatography on silica gel, eluting with methanol:dichloromethane (5:95), giving 90 mg of the desired product, mp 212°-227° C. (dec.) cooled the solvent- removed in vacuo The residue was triturated in a hot methanol/chloroform mixture purified by chromatography on silica gel eluting with methanol:dichloromethane (5:95)

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

Procedure: The above 100 mg of 3-difluoromethylpiperazine and 200 mg of 1-ethyl-1,4-dihydro-6,7,8-trifluoro-4-oxo-3-quinolinecarboxylic acid in 5 ml of pyridine was stirred at 75° C. overnight, then cooled and the solvent removed in vacuo. The residue was triturated in a hot methanol/chloroform mixture and then purified by chromatography on silica gel, eluting with methanol:dichloromethane (5:95), giving 90 mg of the desired product, mp 212°-227° C. (dec.). cooled the solvent removed in vacuo The residue was triturated in a hot methanol/chloroform mixture purified by chromatography on silica gel eluting with methanol:dichloromethane (5:95)

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

Procedure: A mixture of 2-Difluoromethyl Piperazine (80 mg, 0.41 mmol), 1-(2-bromoethyl)-4-nitrobenzene (373 mg, 1.6 mmol), tetrabutylammonium iodide (15 mg, 0.16 mmol), and K2CO3 (220 mg, 1.6 mmol) in DMF (2 mL) was heated to 80° C. for 2 days. LC showed formation of the desired product, which was separated by mass-directed HPLC. LC-MS (IE, m/z): 435 [M+1]+. (0.44 μM)

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

Procedure: The above 100 mg of 3-difluoromethylpiperazine and 200 mg of 1-ethyl-1,4-dihydro-6,7,8-trifluoro-4-oxo-3-quinolinecarboxylic acid in 5 ml of pyridine was stirred at 75° C. overnight, then cooled and the solvent- removed in vacuo. The residue was triturated in a hot methanol/chloroform mixture and then purified by chromatography on silica gel, eluting with methanol:dichloromethane (5:95), giving 90 mg of the desired product, mp 212°-227° C. (dec.) cooled the solvent- removed in vacuo The residue was triturated in a hot methanol/chloroform mixture purified by chromatography on silica gel eluting with methanol:dichloromethane (5:95)