Acetyl chloride → 1-(2-Acetyl-5-methyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indol-7-yl)-4-(benzyloxy)pyridin-2(1H)-one

HRID 1020657Notes

Reaction equation

HRID 1020657 reaction equation
[CH2:1]([O:8][C:9]1[CH:14]=[CH:13][N:12]([C:15]2[CH:16]=[CH:17][C:18]3[C:19]4[CH2:28][NH:27][CH2:26][CH2:25][C:20]=4[N:21]([CH3:24])[C:22]=3[CH:23]=2)[C:11](=[O:29])[CH:10]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(N(CC)CC)C.[C:37](Cl)(=[O:39])[CH3:38]>C(Cl)Cl>[C:37]([N:27]1[CH2:26][CH2:25][C:20]2[N:21]([CH3:24])[C:22]3[CH:23]=[C:15]([N:12]4[CH:13]=[CH:14][C:9]([O:8][CH2:1][C:2]5[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=5)=[CH:10][C:11]4=[O:29])[CH:16]=[CH:17][C:18]=3[C:19]=2[CH2:28]1)(=[O:39])[CH3:38]

Participants

5

Reactant 3

HCID 6367Acetyl chlorideHCID 8471TriethylamineHCID 44123851HCID 44123851, compound

Product 1

HCID 441944821-(2-Acetyl-5-methyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indol-7-yl)-4-(benzyloxy)pyridin-2(1H)-oneYield 36%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of 4-(benzyloxy)-1-(5-methyl-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indol-7-yl)pyridin-2(1H)-one (0.2 g, 0.5 mmol) in CH2Cl2 (6 mL) was added triethylamine (0.20 mL, 1.4 mmol) followed by acetyl chloride (50 μL, 0.71 mmol). The reaction was stirred at room temperature until complete. After the solvent was removed under reduced pressure, the residue was purified by flash column chromatography (silica gel, 5% CH3OH in CH2Cl2) to give the title compound (72.2 mg, 36%) as a yellow solid and as a mixture of rotamers: mp 225-230° C.; 1H NMR (500 MHz, CDCl3) δ 7.53-7.36 (m, 6H), 7.32-7.30 (m, 2H), 7.06-7.00 (m, 1H), 6.09 (d, J=3.0 Hz, 1H), 6.07-6.04 (m, 1H), 5.06 (s, 2H), 4.82 (s, 1H), 4.67 (s, 1H), 4.03 (t, J=5.5 Hz, 1H), 3.84 (t, J=5.5 Hz, 1H), 3.64 (s, 3H), 2.90 (t, J=5.5 Hz, 1H), 2.84 (t, J=5.5 Hz, 1H), 2.24, 2.22 (2×s, 3H); ESI MS m/z 428 [M+H]+; HPLC (Method A) 95.7% (AUC), tR=16.8 min.

Workup

  1. customAfter the solvent was removed under reduced pressure
  2. customthe residue was purified by flash column chromatography (silica gel, 5% CH3OH in CH2Cl2)

Sources & evidence

ORD record
ord-7b4ba4435f3945feb361f3c5c00bbea8
Source dataset
uspto-grants-2014_05
Patent number
US08716308B2

Reaction notes

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