Diisopropylethylamine → 3-[Ethyl(1-methylpiperidin-4-yl)amino]-2-methyl-N-[(6-methyl-2-oxo-4-propyl-1,2-dihydropyridin-3-yl)methyl]-5-(trifluoromethyl)benzamide

HRID 2208956Notes

Reaction equation

HRID 2208956 reaction equation
[CH2:1]([N:3]([CH:18]1[CH2:23][CH2:22][N:21]([CH3:24])[CH2:20][CH2:19]1)[C:4]1[C:5]([CH3:17])=[C:6]([CH:10]=[C:11]([C:13]([F:16])([F:15])[F:14])[CH:12]=1)[C:7](O)=[O:8])[CH3:2].Cl.[NH2:26][CH2:27][C:28]1[C:29](=[O:38])[NH:30][C:31]([CH3:37])=[CH:32][C:33]=1[CH2:34][CH2:35][CH3:36].C1CN([P+](ON2N=NC3C=CC=CC2=3)(N2CCCC2)N2CCCC2)CC1.F[P-](F)(F)(F)(F)F.CCN(C(C)C)C(C)C>CS(C)=O>[CH2:1]([N:3]([CH:18]1[CH2:19][CH2:20][N:21]([CH3:24])[CH2:22][CH2:23]1)[C:4]1[C:5]([CH3:17])=[C:6]([CH:10]=[C:11]([C:13]([F:15])([F:14])[F:16])[CH:12]=1)[C:7]([NH:26][CH2:27][C:28]1[C:29](=[O:38])[NH:30][C:31]([CH3:37])=[CH:32][C:33]=1[CH2:34][CH2:35][CH3:36])=[O:8])[CH3:2]

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 2724699PyBOPHCID 708736533-[Ethyl(1-methylpiperidin-4-yl)amino]-2-methyl-5-(trifluoromethyl)benzoic acidHCID 708741233-AMinoMethyl-6-Methyl-4-propyl-1H-pyridin-2-one hydrochloride

Product 1

HCID 708747773-[Ethyl(1-methylpiperidin-4-yl)amino]-2-methyl-N-[(6-methyl-2-oxo-4-propyl-1,2-dihydropyridin-3-yl)methyl]-5-(trifluoromethyl)benzamideYield 22.4%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Conditions

Temperature
23 °C

Procedure

To a stirred solution of 3-[ethyl(1-methylpiperidin-4-yl)amino]-2-methyl-5-(trifluoromethyl)benzoic acid (crude material, 680 mg, 1.97 mmol) and 3-(aminomethyl)-6-methyl-4-propyl-1,2-dihydropyridin-2-one HCl salt (642 mg, 2.96 mmol) in DMSO (7 mL) was added PyBOP (1.85 g, 3.55 mmol) and hunig base (764 mg, 5.91 mmol). The reaction mixture was stirred at 23° C. for 20 hours. The reaction mixture was quenched with water and resulting precipitate was collected. The solid was purified by silica gel column chromatography (NH—SiO2 ethylacetate/MeOH=20/1) to give the titled compound as a white solid (224 mg, 22% yield). 1H-NMR (400 MHz, CDCl3) δppm; 7.31 (s, 1H), 7.26 (s, 1H), 7.16 (m, 1H), 5.94 (s, 1H), 4.55 (d, J=5.9 Hz, 2H), 3.08 (q, J=7.0 Hz, 2H), 2.82 (m, 2H), 2.66-2.73 (m, 3H), 2.33 (s, 3H), 2.24 (s×2, 6H), 1.79-1.98 (m, 2H), 1.67-1.75 (m, 4H), 1.59-1.66 (m, 2H), 1.02 (t, J=7.2 Hz, 3H), 0.84 (t, J=7.0 Hz, 3H); MS (ES) [M−H] 505.2; HPLC 98.1% purity.

Workup

  1. customThe reaction mixture was quenched with water
  2. customresulting precipitate
  3. customwas collected
  4. customThe solid was purified by silica gel column chromatography (NH—SiO2 ethylacetate/MeOH=20/1)

Sources & evidence

ORD record
ord-904c61754a7548518d2abea74ccc9663
Source dataset
uspto-grants-2016_06
Patent number
US09376422B2

Reaction notes

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