N-methyl-N-pyrrolidin-3-ylacetamide

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: In analogy to the procedure described for the synthesis of 5-tert-butyl-3-(2-chlorobenzyl)-7-morpholin-4-yl-3H-[1,2,3]triazolo[4,5-d]pyrimidine (example 1, step c), the title compound was prepared from 5-tert-butyl-7-chloro-3-(2-chlorobenzyl)-3H-[1,2,3]triazolo[4,5-d]pyrimidine and N-methyl-N-(pyrrolidin-3-yl)acetamide. MS (m/e): 442.4 (MH+).

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

Procedure: 5-(2-Methanesulfonyloxy-ethyl)-2-methyl-1H-indole-3-carboxylic acid benzyl ester (0.300 g, 0.770 mmol, 1 eq, Example 56, Step D) was suspended in Dioxane (20 mL) under Ar. 3-(N-Acetyl-N-methylamino)-pyrrolidine (0.330 g, 2.320 mmol, 3 eq) was added. The reaction mixture was stirred and heated to reflux for 18 hours. Then the reaction was quenched with saturated sodium bicarbonate and extracted with ethyl acetate (3×). The combined organic phases were washed with brine and dried over Na2SO4. After removing the solvent, the residue was loaded on silica gel and chromatographed, eluting with ethyl acetate/methanol/triethyl amine (100/10/1). 0.200 g (60%) of the indole-amine was obtained as a white solid. This was converted to the .HCl salt. LC/MS (ESI+) 434 (M+1); Anal. Calcd for C26H31N3O3.1HCl.1.25H2O: C, 63.40; H, 7.06; N, 8.53; Found: C, 63.51; H, 6.95; N, 8.30. heated to reflux for 18 hours Then the reaction was quenched with saturated sodium bicarbonate extracted with ethyl acetate (3×) The combined organic phases were washed with brine dried over Na2SO4 After removing the solvent chromatographed eluting with ethyl acetate/methanol/triethyl amine (100/10/1)

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

Procedure: A mixture of ethyl 7-ethylsulfonyl-6-fluoro-1-(2-fluoroethyl)-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylate (26.7 g) obtained according to the Reference Example 2, 3-(N-acetyl-N-methylamino)pyrrolidine (15.5 g), triethylamine (10.0 ml), and ethanol (300 ml) was heated under reflux for one hour. The reaction mixture was concentrated to a half volume under reduced pressure. To the mixture was added water (200 ml), and the resulting crystals were collected by filtration, and recrystallized from chloroform-ethanol to give 24.8 g of ethyl 7-[3-(N-acetyl-N-methylamino)-1-pyrrolidinyl]-6-fluoro-1-(2-fluoroethyl)-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylate melting at 227°-229° C. A solution of the above ester (20.0 g) in 20% hydrochloric acid (120 ml) was heated under reflux for 3 hours. After the reaction was completed, water (60 ml) and ethanol (120 ml) were added to the reaction mixture, and the resulting crystals were collected by filtration. The crystals were dissolved in hot water (800 ml) and the solution was treated with charcoal. The filtrate was adjusted to pH 8.5-9.0 by addition of 27% aqueous ammonia. The crystals were collected by filtration, washed with water, and dried to give 11.0 g of the compound 4, m.p. 243°-245° C. obtained was heated under reflux for one hour The reaction mixture was concentrated to a half volume under reduced pressure To the mixture was added water (200 ml) the resulting crystals were collected by filtration recrystallized from chloroform-ethanol

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

Procedure: A mixture of ethyl 7-ethylsulfonyl-6-fluoro-1-(2-fluoroethyl)-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylate (26.7 g) obtained according to the Reference Example 2, 3-(N-acetyl-N-methylamino)pyrrolidine (15.5 g), triethylamine (10.0 ml), and ethanol (300 ml) was heated under reflux for one hour. The reaction mixture was concentrated to a half volume under reduced pressure. To the mixture was added water (200 ml), and the resulting crystals were collected by filtration, and recrystallized from chloroform-ethanol to give 24.8 g of ethyl 7-[3-(N-acetyl-N-methylamino)-1-pyrrolidinyl]-6-fluoro-1-(2-fluoroethyl)-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylate melting at 227°-229° C. A solution of the above ester (20.0 g) in 20% hydrochloric acid (120 ml) was heated under reflux for 3 hours. After the reaction was completed, water (60 ml) and ethanol (120 ml) were added to the reaction mixture, and the resulting crystals were collected by filtration. The crystals were dissolved in hot water (800 ml) and the solution was treated with charcoal. The filtrate was adjusted to pH 8.5-9.0 by addition of 27% aqueous ammonia. The crystals were collected by filtration, washed with water, and dried to give 11.0 g of the compound 4, m.p. 243°-245° C. obtained was heated under reflux for one hour The reaction mixture was concentrated to a half volume under reduced pressure To the mixture was added water (200 ml) the resulting crystals were collected by filtration recrystallized from chloroform-ethanol

Conditions: temp:120.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 4-fluorobenzaldehyde (2.01 g, 16.2 mmol) and N-methyl-N-(pyrrolidin-3-yl)acetamide (1.92 g, 13.5 mmol) in DMF (20 mL) was treated with K2CO3 (2.24 g, 16.2 mmol). The mixture was heated at 120° C. under nitrogen for 18 hours, cooled to room temperature, diluted with ethyl acetate (150 mL), washed with brine, dried (Na2SO4), filtered, and concentrated. The residue was purified by flash chromatography on silica gel, eluting with 100% ethyl acetate to 10% methanol/ethyl acetate, to afford N-(1-(4-formylphenyl)pyrrolidin-3-yl)-N-methylacetamide. cooled to room temperature washed with brine dried (Na2SO4) filtered concentrated The residue was purified by flash chromatography on silica gel eluting with 100% ethyl acetate to 10% methanol/ethyl acetate

Conditions: temp:120.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 4-fluorobenzaldehyde (2.01 g, 16.2 mmol) and N-methyl-N-(pyrrolidin-3-yl)acetamide (1.92 g, 13.5 mmol) in DMF (20 mL) was treated with K2CO3 (2.24 g, 16.2 mmol). The mixture was heated at 120° C. under nitrogen for 18 hours, cooled to room temperature, diluted with ethyl acetate (150 mL), washed with brine, dried (Na2SO4), filtered, and concentrated. The residue was purified by flash chromatography on silica gel, eluting with 100% ethyl acetate to 10% methanol/ethyl acetate, to afford N-(1-(4-formylphenyl)pyrrolidin-3-yl)-N-methylacetamide. cooled to room temperature washed with brine dried (Na2SO4) filtered concentrated The residue was purified by flash chromatography on silica gel eluting with 100% ethyl acetate to 10% methanol/ethyl acetate

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

Procedure: In analogy to the procedure described for the synthesis of 5-tert-butyl-3-(2-chlorobenzyl)-7-morpholin-4-yl-3H-[1,2,3]triazolo[4,5-d]pyrimidine (example 1, step c), the title compound was prepared from 5-tert-butyl-7-chloro-3-(2-chlorobenzyl)-3H-[1,2,3]triazolo[4,5-d]pyrimidine and N-methyl-N-(pyrrolidin-3-yl)acetamide. MS (m/e): 442.4 (MH+).

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

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

Procedure: 4-Fluoronitrobenzene (25.0 g) was slowly added to a suspension of N-methyl-N-pyrrolidin-3-ylacetamide (25.2 g) and cesium carbonate (57.6 g) in DMF (300 ml). After 2 hours, the reaction mixture was poured into water, and the resultant precipitate was filtered off with suction. Alternatively, the product can also be extracted with ethyl acetate and purified by chromatography after concentration. This results in the product with the molecular weight of 263.30 (C13H17N3O3): MS (ESI): 264 (M+H+). the resultant precipitate was filtered off with suction Alternatively, the product can also be extracted with ethyl acetate purified by chromatography after concentration This results in the product with the molecular weight of 263.30 (C13H17N3O3)

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

Procedure: 4-Fluoronitrobenzene (25.0 g) was slowly added to a suspension of N-methyl-N-pyrrolidin-3-ylacetamide (25.2 g) and cesium carbonate (57.6 g) in DMF (300 ml). After 2 hours, the reaction mixture was poured into water, and the resultant precipitate was filtered off with suction. Alternatively, the product can also be extracted with ethyl acetate and purified by chromatography after concentration. This results in the product with the molecular weight of 263.30 (C13H17N3O3): MS (ESI): 264 (M+H+). the resultant precipitate was filtered off with suction Alternatively, the product can also be extracted with ethyl acetate purified by chromatography after concentration This results in the product with the molecular weight of 263.30 (C13H17N3O3)