Hydrochloric Acid → HCID 68600088, compound

HRID 2385439Notes

Reaction equation

HRID 2385439 reaction equation
[CH3:1][N:2]1[CH2:7][CH2:6][N:5]([CH2:8][N:9]2[C:17]3[C:12](=[CH:13][CH:14]=[CH:15][CH:16]=3)[C:11]3([C:21]4=[CH:22][C:23]5[O:27][CH2:26][O:25][C:24]=5[CH:28]=[C:20]4[O:19][CH2:18]3)[C:10]2=[O:29])[CH2:4][CH2:3]1.[ClH:30]>CO>[ClH:30].[CH3:1][N:2]1[CH2:3][CH2:4][N:5]([CH2:8][N:9]2[C:17]3[C:12](=[CH:13][CH:14]=[CH:15][CH:16]=3)[C:11]3([C:21]4=[CH:22][C:23]5[O:27][CH2:26][O:25][C:24]=5[CH:28]=[C:20]4[O:19][CH2:18]3)[C:10]2=[O:29])[CH2:6][CH2:7]1

Participants

4

Reactant 2

HCID 313Hydrochloric AcidHCID 59352578HCID 59352578, compound

Product 1

HCID 68600088HCID 68600088, compound

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

A stirred solution of spiro[furo[2,3-f][1,3]benzodioxole-7,3′-indol]-2′(1′H)-one (1.0 g, 3.6 mmol), N-methylpiperazine (3.6 g, 36.0 mmol) and formaldehyde (37% wt solution in water, 2.9 mL, 36.0 mmol) in methanol was refluxed for 20 h. The solution was concentrated in vacuo to dryness and recrystallized from ether in hexanes to afford the free base form of 1′-[(4-methylpiperazin-1-yl)methyl]spiro[furo[2,3-f][1,3]benzodioxole-7,3′-indol]-2′(1′H)-one as a pale orange solid (1.15 g, 81%). To a solution of 1′-[(4-methylpiperazin-1-yl)methyl]spiro[furo[2,3-f][1,3]benzodioxole-7,3′-indol]-2′(1′H)-one (0.50 g, 12.7 mmol) in methanol (5 mL) was added hydrochloric acid saturated methanol (10 mL). The precipitate that formed was filtered and dried in vacuo to afford 1′-[(4-methylpiperazin-1-yl)methyl]spiro[furo[2,3-f][1,3]benzodioxole-7,3′-indol]-2′(1′H)-one hydrogen chloride (0.65 g, quantitative) as a colorless solid: mp>175° C. (dec.); 1H NMR (300 MHz, DMSO-d6) δ11.59 (br s, 1H), 9.43 (br s, 1H), 7.41 (d, J=7.9 Hz, 1H), 7.31 (dd, J=7.6, 7.6 Hz, 1H), 7.15 (d, J=6.6 Hz, 1H), 7.06 (dd, J=7.4, 7.4 Hz, 1H), 6.66 (s, 1H), 6.47 (s, 1H), 5.89 (s, 2H), 4.86-4.73 (m, 3H), 4.61 (d, J=9.5 Hz, 1H), 3.54-3.28 (m, 4H), 3.27-2.94 (m, 4H), 2.71 (s, 3H); MS (ES+) m/z 394.0 (M+1). Anal. Calcd. for C20H23N3O4.2HCl.0.5H2O: C, 55.59; H, 5.51; N, 8.84. Found: C, 55.47; H, 5.43; N, 8.78.

Workup

  1. customThe precipitate that formed
  2. filtrationwas filtered
  3. customdried in vacuo

Sources & evidence

ORD record
ord-0e72d05357034783b64fc2d9801ac5e4
Source dataset
uspto-grants-2012_09
Patent number
US08263606B2

Reaction notes

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