4-Methylmorpholine → N-methyl-2-[(2'-oxo-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3'-indol]-1' (2'H)-yl)methyl]pyridine-3-carboxamide

HRID 1407895Notes

Reaction equation

HRID 1407895 reaction equation
[O:1]=[C:2]1[C:10]2([C:22]3[C:13](=[CH:14][C:15]4[O:20][CH2:19][CH2:18][O:17][C:16]=4[CH:21]=3)[O:12][CH2:11]2)[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[N:3]1[CH2:23][C:24]1[C:29]([C:30](O)=[O:31])=[CH:28][CH:27]=[CH:26][N:25]=1.Cl.CN.O[N:37]1[C:41]2C=CC=CC=2N=N1.CN1CCOCC1>O.CN(C)C=O>[CH3:41][NH:37][C:30]([C:29]1[C:24]([CH2:23][N:3]2[C:4]3[C:9](=[CH:8][CH:7]=[CH:6][CH:5]=3)[C:10]3([C:22]4[C:13](=[CH:14][C:15]5[O:20][CH2:19][CH2:18][O:17][C:16]=5[CH:21]=4)[O:12][CH2:11]3)[C:2]2=[O:1])=[N:25][CH:26]=[CH:27][CH:28]=1)=[O:31]

Participants

7

Reactant 4

HCID 79724-MethylmorpholineHCID 757711-HydroxybenzotriazoleHCID 6364545Methylamine hydrochlorideHCID 593522232-[(2'-oxo-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3'-indol]-1'(2'H)-yl)methyl]pyridine-3-carboxylic acid

Product 1

HCID 59352385N-methyl-2-[(2'-oxo-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3'-indol]-1' (2'H)-yl)methyl]pyridine-3-carboxamideYield 92.5%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

A 50 mL round-bottom flask was charged with 2-[(2′-oxo-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3′-indol]-1′(2′H)-yl)methyl]pyridine-3-carboxylic acid (0.43 g, 1.0 mmol), methylamine hydrochloride (0.14 g, 2.0 mmol), 1-ethyl-3-(3-dimethyllaminopropyl)carbodiimide hydrochloride (0.26 g, 1.4 mmol), 1-hydroxybenzotriazole (0.20 g, 1.5 mmol), N-methylmorpholine (0.4 mL, 3.6 mmol) and N,N-dimethylformamide (7 mL). The reaction mixture was stirred under nitrogen at ambient temperature for 20 h, and poured into water (200 mL). The solid was collected by filtration, washed with water, dried and purified by column chromatography and eluted with a 0% to 50% gradient of ethyl acetate in dichloromethane to afford N-methyl-2-[(2′-oxo-2,3-dihydrospiro[furo[2,3-g][1,4]benzodioxine-8,3′-indol]-1′(2′H)-yl)methyl]pyridine-3-carboxamide (0.41 g, 92%) as an off-white solid: 1H NMR (300 MHz, CDCl3) δ 8.43 (d, J=4.8 Hz, 1H), 7.85 (d, J=7.7 Hz, 1H), 7.36 (dd, J=7.5, 5.0 Hz, 1H), 7.20-7.07 (m, 2H), 6.95 (t, J=7.5, 1H), 6.81 (d, J=7.8 Hz, 1H), 6.46 (d, J=1.2 Hz, 1H), 6.43 (d, J=1.2 Hz, 1H), 5.16 (ABq, 2H), 4.70 (ABq, 2H), 4.20-4.05 (m, 4H), 2.77 (s, 3H); 13C NMR (75 MHz, CDCl3) δ 177.3, 167.6, 154.9, 152.7, 150.1, 144.5, 143.3, 138.1, 136.2, 132.5, 131.6, 129.0, 123.7, 123.1, 122.9, 122.2, 112.4, 109.6, 99.0, 79.7, 64.6, 64.1, 57.7, 43.3, 26.5; MS (ES+) m/z 443.9 (M+1).

Workup

  1. filtrationThe solid was collected by filtration
  2. washwashed with water
  3. customdried
  4. custompurified by column chromatography
  5. washeluted with a 0% to 50% gradient of ethyl acetate in dichloromethane

Sources & evidence

ORD record
ord-192b502908c34a24ad7731da039c6958
Source dataset
uspto-grants-2014_12
Patent number
US08916580B2

Reaction notes

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