O-(2-morpholin-4-ylethyl)hydroxylamine

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

Procedure: To a solution of O-(2-morpholinoethyl)hydroxylamine (600 mg, 4.1 mmol) in anhydrous toluene (6 mL) was added (R)-2-amino-7-(2-bromo-4-fluorophenyl)-4-methyl-7,8-dihydropyrido[4,3-d]pyrimidine-5(6H)-thione (0.150 g, 0.41 mmol) and mercuric acetate (II) (262 mg, 0.82 mmol). The resultant mixture was heated to 100° C. for 1 h. The reaction was allowed to cool to r.t. and filtered through a pad of Celite, rinsing with EtOAc and CH3OH. The filtrate was concentrated to provide a yellow-green oil, which was purified by preparative HPLC eluting with TFA/ACN/H2O. The fractions were concentrated to provide (R,Z)-2-amino-7-(2-bromo-4-fluorophenyl)-4-methyl-7,8-dihydropyrido[4,3-d]pyrimidin-5(6H)-one O-2-morpholinoethyl oxime (196 mg, 0.41 mmol). [M+H] calc'd for C20H24BrFN6O2, 480. found, 480. filtered through a pad of Celite rinsing with EtOAc and CH3OH The filtrate was concentrated to provide a yellow-green oil, which was purified by preparative HPLC eluting with TFA/ACN/H2O The fractions were concentrated

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

Procedure: To a solution of 2-morpholinoethanol (5 g, 38 mmol) in CH2Cl2 (250 mL) was added 2-hydroxyisoindolin-1,3-dione (9.3 g, 57 mmol) and triphenylphosphine (15 g, 57 mmol). The resultant mixture was cooled to 0° C. and diisopropyl azodicarboxylate (11 ml, 57 mmol) was slowly added drop wise with an addition funnel under N2 atmosphere. The reaction mixture was stirred at ambient temperature for 48 h. The reaction mixture was concentrated to provide clear oil, which was purified by flash chromatography (50% EtOAc-Hexane). The resultant clear oily compound was dissolved in CH2Cl2 (50 ml). Hydrazine hydrate (5.8 mL, 76 mmol) was added. The reaction mixture was stirred at ambient temperature for 8 h. The resultant solid was filtered off and the filtrate concentrated under reduced pressure to provide a clear oil of O-(2-morpholinoethyl)hydroxylamine (3.5 g, 24 mmol). [M+H] calc'd for C6H14N2O2, 147. found, 147. The reaction mixture was concentrated to provide clear oil, which was purified by flash chromatography (50% EtOAc-Hexane) The resultant clear oily compound was dissolved in CH2Cl2 (50 ml) The reaction mixture was stirred at ambient temperature for 8 h The resultant solid was filtered off the filtrate concentrated under reduced pressure

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

Procedure: To a solution of 2-morpholinoethanol (5 g, 38 mmol) in CH2Cl2 (250 mL) was added 2-hydroxyisoindolin-1,3-dione (9.3 g, 57 mmol) and triphenylphosphine (15 g, 57 mmol). The resultant mixture was cooled to 0° C. and diisopropyl azodicarboxylate (11 ml, 57 mmol) was slowly added drop wise with an addition funnel under N2 atmosphere. The reaction mixture was stirred at ambient temperature for 48 h. The reaction mixture was concentrated to provide clear oil, which was purified by flash chromatography (50% EtOAc-Hexane). The resultant clear oily compound was dissolved in CH2Cl2 (50 ml). Hydrazine hydrate (5.8 mL, 76 mmol) was added. The reaction mixture was stirred at ambient temperature for 8 h. The resultant solid was filtered off and the filtrate concentrated under reduced pressure to provide a clear oil of O-(2-morpholinoethyl)hydroxylamine (3.5 g, 24 mmol). [M+H] calc'd for C6H14N2O2, 147. found, 147. The reaction mixture was concentrated to provide clear oil, which was purified by flash chromatography (50% EtOAc-Hexane) The resultant clear oily compound was dissolved in CH2Cl2 (50 ml) The reaction mixture was stirred at ambient temperature for 8 h The resultant solid was filtered off the filtrate concentrated under reduced pressure

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

Procedure: To a solution of O-(2-morpholinoethyl)hydroxylamine (600 mg, 4.1 mmol) in anhydrous toluene (6 mL) was added (R)-2-amino-7-(2-bromo-4-fluorophenyl)-4-methyl-7,8-dihydropyrido[4,3-d]pyrimidine-5(6H)-thione (0.150 g, 0.41 mmol) and mercuric acetate (II) (262 mg, 0.82 mmol). The resultant mixture was heated to 100° C. for 1 h. The reaction was allowed to cool to r.t. and filtered through a pad of Celite, rinsing with EtOAc and CH3OH. The filtrate was concentrated to provide a yellow-green oil, which was purified by preparative HPLC eluting with TFA/ACN/H2O. The fractions were concentrated to provide (R,Z)-2-amino-7-(2-bromo-4-fluorophenyl)-4-methyl-7,8-dihydropyrido[4,3-d]pyrimidin-5(6H)-one O-2-morpholinoethyl oxime (196 mg, 0.41 mmol). [M+H] calc'd for C20H24BrFN6O2, 480; found, 480. filtered through a pad of Celite rinsing with EtOAc and CH3OH The filtrate was concentrated to provide a yellow-green oil, which was purified by preparative HPLC eluting with TFA/ACN/H2O The fractions were concentrated

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

Procedure: To a solution of 2-morpholinoethanol (5 g, 38 mmol) in CH2Cl2 (250 mL) was added 2-hydroxyisoindoline-1,3-dione (9.3 g, 57 mmol) and triphenylphosphine (15 g, 57 mmol). The resultant mixture was cooled to 0° C. and diisopropyl azodicarboxylate (11 ml, 57 mmol) was slowly added drop wise with an addition funnel under N2 atmosphere. The reaction mixture was stirred at ambient temperature for 48 h. The reaction mixture was concentrated to provide clear oil, which was purified by flash chromatography (50% EtOAc—Hexane). The resultant clear oily compound was dissolved in CH2Cl2 (50 ml). Hydrazine hydrate (5.8 mL, 76 mmol) was added. The reaction mixture was stirred at ambient temperature for 8 h. The resultant solid was filtered off and the filtrate concentrated under reduced pressure to provide a clear oil of O-(2-morpholinoethyl)hydroxylamine (3.5 g, 24 mmol). [M+H] calc'd for C6H14N2O2, 147; found, 147. The reaction mixture was concentrated to provide clear oil, which was purified by flash chromatography (50% EtOAc—Hexane) The resultant clear oily compound was dissolved in CH2Cl2 (50 ml) The reaction mixture was stirred at ambient temperature for 8 h The resultant solid was filtered off the filtrate concentrated under reduced pressure

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

Procedure: To a solution of O-(2-morpholinoethyl)hydroxylamine (600 mg, 4.1 mmol) in anhydrous toluene (6 mL) was added (R)-2-amino-7-(2-bromo-4-fluorophenyl)-4-methyl-7,8-dihydropyrido[4,3-d]pyrimidine-5(6H)-thione (0.150 g, 0.41 mmol) and mercuric acetate (II) (262 mg, 0.82 mmol). The resultant mixture was heated to 100° C. for 1 h. The reaction was allowed to cool to r.t. and filtered through a pad of Celite, rinsing with EtOAc and CH3OH. The filtrate was concentrated to provide a yellow-green oil, which was purified by preparative HPLC eluting with TFA/ACN/H2O. The fractions were concentrated to provide (R,Z)-2-amino-7-(2-bromo-4-fluorophenyl)-4-methyl-7,8-dihydropyrido[4,3-d]pyrimidin-5(6H)-one O-2-morpholinoethyl oxime (196 mg, 0.41 mmol). [M+H] calc'd for C20H24BrFN6O2, 480. found, 480. filtered through a pad of Celite rinsing with EtOAc and CH3OH The filtrate was concentrated to provide a yellow-green oil, which was purified by preparative HPLC eluting with TFA/ACN/H2O The fractions were concentrated

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

Procedure: To a solution of 2-morpholinoethanol (5 g, 38 mmol) in CH2Cl2 (250 mL) was added 2-hydroxyisoindolin-1,3-dione (9.3 g, 57 mmol) and triphenylphosphine (15 g, 57 mmol). The resultant mixture was cooled to 0° C. and diisopropyl azodicarboxylate (11 ml, 57 mmol) was slowly added drop wise with an addition funnel under N2 atmosphere. The reaction mixture was stirred at ambient temperature for 48 h. The reaction mixture was concentrated to provide clear oil, which was purified by flash chromatography (50% EtOAc-Hexane). The resultant clear oily compound was dissolved in CH2Cl2 (50 ml). Hydrazine hydrate (5.8 mL, 76 mmol) was added. The reaction mixture was stirred at ambient temperature for 8 h. The resultant solid was filtered off and the filtrate concentrated under reduced pressure to provide a clear oil of O-(2-morpholinoethyl)hydroxylamine (3.5 g, 24 mmol). [M+H] calc'd for C6H14N2O2, 147. found, 147. The reaction mixture was concentrated to provide clear oil, which was purified by flash chromatography (50% EtOAc-Hexane) The resultant clear oily compound was dissolved in CH2Cl2 (50 ml) The reaction mixture was stirred at ambient temperature for 8 h The resultant solid was filtered off the filtrate concentrated under reduced pressure