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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 2385506
Notes
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Reaction equation

HRID 2385506 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.Cl.[CH2:37]([N:39]=C=NCCCN(C)C)C.ON1C2C=CC=CC=2N=N1.CN1CCOCC1>O.CN(C)C=O>[CH3:37][NH:39][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]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

8

Reactant 5

HCID 79724-MethylmorpholineHCID 757711-HydroxybenzotriazoleHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 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 59352385
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
Yield 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-dimethylaminopropyl)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) 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-8d95507c6cc847bfae4b6a232da93d1e
Source dataset
uspto-grants-2012_09
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08263606B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes