3-methylthietan-3-amine

Conditions: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 500 mg (1.16 mmol) of the above 5-chloro-7-[2-(3-chloro-pyridin-2-yl)-5-methoxy-2H-pyrazol-3-yl]-1H-8-oxa-1,2,6-triaza-cyclopenta[a]naphthalen-9-one in 10 mL of N,N-dimethylformamide is added 396 mg (3.49 mmol) of 3-methyl-thietan-3-ylamine. The reaction is stirred at 60° C. for 72 hours and then concentrated in vacuo. The residue is taken-up with water and ethyl acetate. The phases are separated and the aqueous layer is washed three times with ethyl acetate. The combined organic layers are washed with brine, dried over MgSO4 and concentrated in vacuo. Purification of the residue by flash chromatography (SiO2, hexanes/ethyl acetate 1:2) affords 276 mg (44%) of the product as a white solid; LC/MS:532/534 (M+H)+, m.p.: 162-165° C. concentrated in vacuo The phases are separated the aqueous layer is washed three times with ethyl acetate The combined organic layers are washed with brine dried over MgSO4 concentrated in vacuo Purification of the residue by flash chromatography (SiO2, hexanes/ethyl acetate 1:2)

Conditions: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 500 mg (1.16 mmol) of the above 5-chloro-7-[2-(3-chloro-pyridin-2-yl)-5-methoxy-2H-pyrazol-3-yl]-1H-8-oxa-1,2,6-triaza-cyclopenta[a]naphthalen-9-one in 10 mL of N,N-dimethylformamide is added 396 mg (3.49 mmol) of 3-methyl-thietan-3-ylamine. The reaction is stirred at 60° C. for 72 hours and then concentrated in vacuo. The residue is taken-up with water and ethyl acetate. The phases are separated and the aqueous layer is washed three times with ethyl acetate. The combined organic layers are washed with brine, dried over MgSO4 and concentrated in vacuo. Purification of the residue by flash chromatography (SiO2, hexanes/ethyl acetate 1:2) affords 276 mg (44%) of the product as a white solid; LC/MS:532/534 (M+H)+, m.p.: 162-165° C. concentrated in vacuo The phases are separated the aqueous layer is washed three times with ethyl acetate The combined organic layers are washed with brine dried over MgSO4 concentrated in vacuo Purification of the residue by flash chromatography (SiO2, hexanes/ethyl acetate 1:2)

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 6-chloro-2-[1-(3-chloro-2-pyridinyl)-3-(trifluoromethyl)-1H-pyrazol-5-yl]-8-methyl-4H-3,1-benzoxazin-4-one (1.13 g, 2.56 mmol) (prepared according to WO 02/48115, example 2D) in tetrahydrofuran (15 ml) is added 3-amino-3-methyl-thietane (the product of step 3) (0.66 g, 6.40 mmol), and the mixture is heated for 48 hours at 50° C., then to reflux for 12 hours. The cooled reaction mixture is poured into water, extracted with ethyl acetate, the combined organic layers washed with water and brine, dried (Na2SO4), filtered, and concentrated. The crude product is purified by flash chromatography (ethyl acetate/hexane 1:2) to afford 560 mg (40%) of the title compound as a white solid, m.p. 238-241° C. to reflux for 12 hours The cooled reaction mixture extracted with ethyl acetate the combined organic layers washed with water and brine dried (Na2SO4) filtered concentrated The crude product is purified by flash chromatography (ethyl acetate/hexane 1:2)

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 6-chloro-2-[1-(3-chloro-2-pyridinyl)-3-(trifluoromethyl)-1H-pyrazol-5-yl]-8-methyl-4H-3,1-benzoxazin-4-one (1.13 g, 2.56 mmol) (prepared according to WO 02/48115, example 2D) in tetrahydrofuran (15 ml) is added 3-amino-3-methyl-thietane (the product of step 3) (0.66 g, 6.40 mmol), and the mixture is heated for 48 hours at 50° C., then to reflux for 12 hours. The cooled reaction mixture is poured into water, extracted with ethyl acetate, the combined organic layers washed with water and brine, dried (Na2SO4), filtered, and concentrated. The crude product is purified by flash chromatography (ethyl acetate/hexane 1:2) to afford 560 mg (40%) of the title compound as a white solid, m.p. 238-241° C. to reflux for 12 hours The cooled reaction mixture extracted with ethyl acetate the combined organic layers washed with water and brine dried (Na2SO4) filtered concentrated The crude product is purified by flash chromatography (ethyl acetate/hexane 1:2)

Conditions: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 500 mg (1.16 mmol) of the above 5-chloro-7-[2-(3-chloro-pyridin-2-yl)-5-methoxy-2H-pyrazol-3-yl]-1H-8-oxa-1,2,6-triaza-cyclopenta[a]naphthalen-9-one in 10 mL of N,N-dimethylformamide is added 396 mg (3.49 mmol) of 3-methyl-thietan-3-ylamine. The reaction is stirred at 60° C. for 72 hours and then concentrated in vacuo. The residue is taken-up with water and ethyl acetate. The phases are separated and the aqueous layer is washed three times with ethyl acetate. The combined organic layers are washed with brine, dried over MgSO4 and concentrated in vacuo. Purification of the residue by flash chromatography (SiO2, hexanes/ethyl acetate 1:2) affords 276 mg (44%) of the product as a white solid; LC/MS:532/534 (M+H)+, m.p.: 162-165° C. concentrated in vacuo The phases are separated the aqueous layer is washed three times with ethyl acetate The combined organic layers are washed with brine dried over MgSO4 concentrated in vacuo Purification of the residue by flash chromatography (SiO2, hexanes/ethyl acetate 1:2)

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 6-chloro-2-[1-(3-chloro-2-pyridinyl)-3-(trifluoromethyl)-1H-pyrazol-5-yl]-8-methyl-4H-3,1-benzoxazin-4-one (1.13 g, 2.56 mmol) (prepared according to WO 02/48115, example 2D) in tetrahydrofuran (15 ml) is added 3-amino-3-methyl-thietane (the product of step 3) (0.66 g, 6.40 mmol), and the mixture is heated for 48 hours at 50° C., then to reflux for 12 hours. The cooled reaction mixture is poured into water, extracted with ethyl acetate, the combined organic layers washed with water and brine, dried (Na2SO4), filtered, and concentrated. The crude product is purified by flash chromatography (ethyl acetate/hexane 1:2) to afford 560 mg (40%) of the title compound as a white solid, m.p. 238-241° C. to reflux for 12 hours The cooled reaction mixture extracted with ethyl acetate the combined organic layers washed with water and brine dried (Na2SO4) filtered concentrated The crude product is purified by flash chromatography (ethyl acetate/hexane 1:2)

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 6-chloro-2-[1-(3-chloro-2-pyridinyl)-3-(trifluoromethyl)-1H-pyrazol-5-yl]-8-methyl-4H-3,1-benzoxazin-4-one (1.13 g, 2.56 mmol) (prepared according to WO 02/48115, example 2D) in tetrahydrofuran (15 ml) is added 3-amino-3-methyl-thietane (the product of step 3) (0.66 g, 6.40 mmol), and the mixture is heated for 48 hours at 50° C., then to reflux for 12 hours. The cooled reaction mixture is poured into water, extracted with ethyl acetate, the combined organic layers washed with water and brine, dried (Na2SO4), filtered, and concentrated. The crude product is purified by flash chromatography (ethyl acetate/hexane 1:2) to afford 560 mg (40%) of the title compound as a white solid, m.p. 238-241° C. to reflux for 12 hours The cooled reaction mixture extracted with ethyl acetate the combined organic layers washed with water and brine dried (Na2SO4) filtered concentrated The crude product is purified by flash chromatography (ethyl acetate/hexane 1:2)

Conditions: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 500 mg (1.16 mmol) of the above 5-chloro-7-[2-(3-chloro-pyridin-2-yl)-5-methoxy-2H-pyrazol-3-yl]-1H-8-oxa-1,2,6-triaza-cyclopenta[a]naphthalen-9-one in 10 mL of N,N-dimethylformamide is added 396 mg (3.49 mmol) of 3-methyl-thietan-3-ylamine. The reaction is stirred at 60° C. for 72 hours and then concentrated in vacuo. The residue is taken-up with water and ethyl acetate. The phases are separated and the aqueous layer is washed three times with ethyl acetate. The combined organic layers are washed with brine, dried over MgSO4 and concentrated in vacuo. Purification of the residue by flash chromatography (SiO2, hexanes/ethyl acetate 1:2) affords 276 mg (44%) of the product as a white solid; LC/MS:532/534 (M+H)+, m.p.: 162-165° C. concentrated in vacuo The phases are separated the aqueous layer is washed three times with ethyl acetate The combined organic layers are washed with brine dried over MgSO4 concentrated in vacuo Purification of the residue by flash chromatography (SiO2, hexanes/ethyl acetate 1:2)