2-ethynylpiperazine

Conditions: temp:140.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 1.23 g of 7 -chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid, 1.95 g of 3-ethynylpiperazine and 15 ml of pyridine is heated at 140° C. in a pressure bottle for 18 hours and then purified as described in Example 101, giving 210 mg of the desired product. purified

Conditions: temp:140.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 1.23 g of 7 -chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid, 1.95 g of 3-ethynylpiperazine and 15 ml of pyridine is heated at 140° C. in a pressure bottle for 18 hours and then purified as described in Example 101, giving 210 mg of the desired product. purified

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 1.12 g of 1-ethyl-6,7-difluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid, 1.95 g of 3-ethynylpiperazine and 15 ml of pyridine is heated at 100° C. in a pressure bottle for 3 hours, then cooled and evaporated. The residue is purified by silica gel flash chromatography, eluting with chloroform:methanol:water:triethylamine (9:0.5:0.02:0.02), giving 200 mg of the desired product. cooled evaporated The residue is purified by silica gel flash chromatography eluting with chloroform:methanol:water:triethylamine (9:0.5:0.02:0.02)

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 1.12 g of 1-ethyl-6,7-difluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid, 1.95 g of 3-ethynylpiperazine and 15 ml of pyridine is heated at 100° C. in a pressure bottle for 3 hours, then cooled and evaporated. The residue is purified by silica gel flash chromatography, eluting with chloroform:methanol:water:triethylamine (9:0.5:0.02:0.02), giving 200 mg of the desired product. cooled evaporated The residue is purified by silica gel flash chromatography eluting with chloroform:methanol:water:triethylamine (9:0.5:0.02:0.02)

Conditions: temp:140.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 1.23 g of 7 -chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid, 1.95 g of 3-ethynylpiperazine and 15 ml of pyridine is heated at 140° C. in a pressure bottle for 18 hours and then purified as described in Example 101, giving 210 mg of the desired product. purified

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 1.12 g of 1-ethyl-6,7-difluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid, 1.95 g of 3-ethynylpiperazine and 15 ml of pyridine is heated at 100° C. in a pressure bottle for 3 hours, then cooled and evaporated. The residue is purified by silica gel flash chromatography, eluting with chloroform:methanol:water:triethylamine (9:0.5:0.02:0.02), giving 200 mg of the desired product. cooled evaporated The residue is purified by silica gel flash chromatography eluting with chloroform:methanol:water:triethylamine (9:0.5:0.02:0.02)

Conditions: temp:140.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 1.23 g of 7-chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid, 1.95 g of 3-ethynylpiperazine and 15 ml of pyridine is heated at 140° C. in a pressure bottle for 18 hours and then purified as described in Example 101, giving 210 mg of the desired product. purified

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 1.12 g of 1-ethyl-6,7-difluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid, 1.95 g of 3-ethynylpiperazine and 15 ml of pyridine is heated at 100° C. in a pressure bottle for 3 hours, then cooled and evaporated. The residue is purified by silica gel flash chromatography, eluting with chloroform:methanol:water:triethylamine (9:0.5:0.02:0.02), giving 200 mg of the desired product. cooled evaporated The residue is purified by silica gel flash chromatography eluting with chloroform:methanol:water:triethylamine (9:0.5:0.02:0.02)

Conditions: temp:140.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 1.23 g of 7 -chloro-1-cyclopropyl-6-fluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid, 1.95 g of 3-ethynylpiperazine and 15 ml of pyridine is heated at 140° C. in a pressure bottle for 18 hours and then purified as described in Example 101, giving 210 mg of the desired product. purified

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 1.12 g of 1-ethyl-6,7-difluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid, 1.95 g of 3-ethynylpiperazine and 15 ml of pyridine is heated at 100° C. in a pressure bottle for 3 hours, then cooled and evaporated. The residue is purified by silica gel flash chromatography, eluting with chloroform:methanol:water:triethylamine (9:0.5:0.02:0.02), giving 200 mg of the desired product. cooled evaporated The residue is purified by silica gel flash chromatography eluting with chloroform:methanol:water:triethylamine (9:0.5:0.02:0.02)