Diisopropylethylamine → 4-[({4-[(3-chloro-2-fluorophenyl)amino]-7-methoxyquinazolin-6-yl}methyl)(methyl)amino]-N,1-dimethylpiperidine-4-carboxamide

4-[({4-[(3-Chloro-2-fluorophenyl)amino]-7-methoxyquinazolin-6-yl}methyl)(methyl)amino]-1-methylpiperidine-4-carboxylic acid (50 mg, 0.1 mmol) was dissolved in N,N-dimethylformamide (2 ml) and O-(7-azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (59 mg, 0.15 mmol) and N,N-diisopropylethylamine (89 μl, 0.51 mmol) were added. After a few minutes methylamine hydrochloride (10 mg, 0.15 mmol) was added and the mixture stirred for 1 hour at room temperature. The mixture was absorbed onto an Isolute SCX column, washed with methanol and eluted with ammonia in methanol. Appropriate fractions were combined and concentrated. The residue was purified by column chromatography on silica, eluting with 5% 7N ammonia in methanol/dichloromethane, to give the title product (40 mg, 77%) as a white solid; 1H NMR Spectrum: (DMSO d6) 1.82 (m, 2H); 2.02 (m, 2H); 2.13 (m, 8H); 2.65 (m, 5H); 3.60 (s, 2H); 3.94 (s, 3H); 7.18 (s, 1H); 7.30 (t, 1H); 7.50 (m, 1H); 7.58 (m, 2H); 8.32 (s, 1H); 8.73 (s, 1H); 9.68 (s, 1H). Mass Spectrum: (M+H)+ 501.

1. customThe mixture was absorbed onto an Isolute SCX column
2. washwashed with methanol
3. washeluted with ammonia in methanol
4. concentrationconcentrated
5. customThe residue was purified by column chromatography on silica
6. washeluting with 5% 7N ammonia in methanol/dichloromethane

ORD record

ord-41a48fe96aff4726803e710a79dfad4b

Source dataset

uspto-grants-2009_12

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07632840B2