Aniline → HCID 68283701, compound

HRID 1630558Notes

Reaction equation

[CH3:1][N:2]1[CH2:15][CH2:14][C:5]2[NH:6][C:7]3[CH:8]=[CH:9][C:10]([CH3:13])=[CH:11][C:12]=3[C:4]=2[CH2:3]1.[OH-].[K+].[C:18]1([NH2:24])[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1.[CH2:25](Cl)Cl>O>[CH3:1][N:2]1[CH2:15][CH2:14][C:5]2[N:6]([CH2:25][NH:24][C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=3)[C:7]3[CH:8]=[CH:9][C:10]([CH3:13])=[CH:11][C:12]=3[C:4]=2[CH2:3]1

Participants

Conditions

Temperature: 85 °C

Procedure

To a solution of 2,8-dimethyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole (200 mg, 1.0 mmol) in DCM (4 mL) were added powdered KOH (392 mg, 7.0 mmol) and phenylamine (111 mg, 1.2 mmol). The reaction mixture was stirred at 85° C. for 2 h. The reaction mixture was diluted with water (20 mL) and extracted with DCM (3×20 mL). The combined organic layer was washed with water (3×30 mL), dried over anhydrous sodium sulfate and concentrated under reduced pressure to afford crude material, which was purified by silica gel column chromatography (3% MeOH-DCM), followed by reverse phase HPLC to yield (2,8-dimethyl-1,2,3,4-tetrahydro-pyrido[4,3-b]indol-5-ylmethyl)-phenyl-amine (20 mg). 1H NMR (CD3OD, freebase) δ (ppm): 7.4 (d, 1H), 7.07 (s, 1H), 7.0 (t, 2H), 6.97 (d, 1H), 6.67 (d, 2H), 6.6 (t, 1H), 5.42 (s, 2H), 3.7 (s, 2H), 3.07 (t, 2H), 2.9 (t, 2H), 2.58 (s, 3H), 2.4 (s, 3H).

Workup

extractionextracted with DCM (3×20 mL)
washThe combined organic layer was washed with water (3×30 mL)
dry with materialdried over anhydrous sodium sulfate
concentrationconcentrated under reduced pressure
customto afford crude material, which
customwas purified by silica gel column chromatography (3% MeOH-DCM)

Sources & evidence

ORD record: ord-47fc1e4fd86e45f288f2811b1c46631b
Source dataset: uspto-grants-2014_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08791132B2

Reaction notes

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