Ethanol → 3-(2-(4-methoxybenzylamino)-6-(2-chlorophenyl)quinolin-3-yl)-N-(cyclohexylmethyl)propanamide

HRID 930253Notes

Reaction equation

[CH3:1][O:2][C:3]1[CH:33]=[CH:32][C:6]([CH2:7][NH:8][C:9]2[C:18]([CH2:19][CH2:20][C:21]([NH:23][CH2:24][CH:25]3[CH2:30][CH2:29][CH2:28][CH2:27][CH2:26]3)=[O:22])=[CH:17][C:16]3[C:11](=[CH:12][CH:13]=[C:14](Br)[CH:15]=3)[N:10]=2)=[CH:5][CH:4]=1.[Cl:34][C:35]1[CH:40]=[CH:39][CH:38]=[CH:37][C:36]=1B(O)O.C([O-])(=O)C.[K+].C(O)C>CC(P(C(C)(C)C)C1C=CC(N(C)C)=CC=1)(C)C.CC(P(C(C)(C)C)C1C=CC(N(C)C)=CC=1)(C)C.Cl[Pd]Cl.O>[CH3:1][O:2][C:3]1[CH:33]=[CH:32][C:6]([CH2:7][NH:8][C:9]2[C:18]([CH2:19][CH2:20][C:21]([NH:23][CH2:24][CH:25]3[CH2:30][CH2:29][CH2:28][CH2:27][CH2:26]3)=[O:22])=[CH:17][C:16]3[C:11](=[CH:12][CH:13]=[C:14]([C:36]4[CH:37]=[CH:38][CH:39]=[CH:40][C:35]=4[Cl:34])[CH:15]=3)[N:10]=2)=[CH:5][CH:4]=1

Participants

Conditions

Temperature: 85 °C

Procedure

To a stirred solution of (E)-3-(2-(4-methoxybenzylamino)-6-bromoquinolin-3-yl)-N-(cyclohexylmethyl)acrylamide (3.7 g, 7.3 mmol, prepared as in Example 2) in DME (100 mL) was added 4-methylbenzenesulfonohydrazide (13.6 g, 72.8 mmol). The mixture was brought to reflux at 86° C. and then via addition funnel was added dropwise a solution of sodium acetate (10.4 g, 127 mmol) in water (60 mL) over 1.5 h. Once the addition was complete, the reaction was refluxed for an additional 30 min, and then cooled to RT and concentrated to remove organic solvent. The crude material was dissolved in DCM (150 mL) and washed sequentially with 1N NaOH, 1N HCl, and then water. The organic layer was dried over MgSO4, filtered and concentrated to give a yellow oil, which upon purification via flash chromatography (5% EtOAc/DCM) afforded 3-(2-(4-methoxybenzylamino)-6-bromoquinolin-3-yl)-N-(cyclohexylmethyl)propanamide. Step 2 In a sealed tube was combined 3-(2-(4-methoxybenzylamino)-6-bromoquinolin-3-yl)-N-(cyclohexylmethyl)propanamide (0.16 g, 0.31 mmol), 2-chlorophenylboronic acid (0.074 g, 0.47 mmol), bis(di-tert-butyl(4-dimethylaminophenyl)phosphine)dichloropalladium(II) (0.0044 g, 0.0063 mmol), potassium acetate (0.062 g, 0.63 mmol), ethanol (6.0 ml) and water (0.41 mL). The flask was sealed and heated in an oil bath at 85° C. for 16 h. The reaction mixture was cooled to RT, adsorbed onto silica and purified by flash chromatography (5% MeOH/DCM) to afford 3-(2-(4-methoxybenzylamino)-6-(2-chlorophenyl)quinolin-3-yl)-N-(cyclohexylmethyl)propanamide. Step 3 The product of step 2 was carried through the same procedure as described in Step 9, Example 2, to afford 3-(2-amino-6-(2-chlorophenyl)quinolin-3-yl)-N-(cyclohexylmethyl)propanamide. MS (ESI, pos. ion) m/z: 422 (M+1).

Workup

customStep 2 In a sealed tube was combined
customThe flask was sealed
temperatureThe reaction mixture was cooled to RT
custompurified by flash chromatography (5% MeOH/DCM)

Sources & evidence

ORD record: ord-64fb974d8b7b4f748bd8ead957e462ce
Source dataset: uspto-grants-2016_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09296698B2

Reaction notes

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