Hydrochloric Acid → 1-(6-Methyl-1,2,3,4,5,6-hexahydroazepino[4,3-b]indol-8-yl)-4-(6-(trifluoromethyl)pyridin-3-yl)pyridin-2(1H)-one hydrochloride

HRID 474911Notes

Reaction equation

HRID 474911 reaction equation
[CH3:1][N:2]1[C:10]2[CH:9]=[C:8]([N:11]3[CH:16]=[CH:15][C:14]([C:17]4[CH:18]=[N:19][C:20]([C:23]([F:26])([F:25])[F:24])=[CH:21][CH:22]=4)=[CH:13][C:12]3=[O:27])[CH:7]=[CH:6][C:5]=2[C:4]2[CH2:28][N:29](C(OC(C)(C)C)=O)[CH2:30][CH2:31][CH2:32][C:3]1=2.[ClH:40]>CO>[ClH:40].[CH3:1][N:2]1[C:10]2[CH:9]=[C:8]([N:11]3[CH:16]=[CH:15][C:14]([C:17]4[CH:18]=[N:19][C:20]([C:23]([F:24])([F:25])[F:26])=[CH:21][CH:22]=4)=[CH:13][C:12]3=[O:27])[CH:7]=[CH:6][C:5]=2[C:4]2[CH2:28][NH:29][CH2:30][CH2:31][CH2:32][C:3]1=2

Participants

4

Reactant 2

HCID 313Hydrochloric AcidHCID 66873773tert-Butyl 6-methyl-8-(2-oxo-4-(6-(trifluoromethyl)pyridin-3-yl)pyridin-1(2H)-yl)3,4,5,6-tetrahydroazepino[4,3-b]indole-2(1H)-carboxylate

Product 1

HCID 668731281-(6-Methyl-1,2,3,4,5,6-hexahydroazepino[4,3-b]indol-8-yl)-4-(6-(trifluoromethyl)pyridin-3-yl)pyridin-2(1H)-one hydrochlorideYield 70%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

A solution of tert-butyl 6-methyl-8-(2-oxo-4-(6-(trifluoromethyl)pyridin-3-yl)pyridin-1(2H)-yl)3,4,5,6-tetrahydroazepino[4,3-b]indole-2(1H)-carboxylate (67 mg, 0.13 mmol) in 1.25 M HCl in MeOH (16 mL) was stirred at ambient temperature for 18 h. The mixture was concentrated to dryness under reduced pressure and diluted with MeOH (2.0 mL) and Et2O (25 mL). The resulting solids were collected by filtration and dried to yield the title compound (42 mg, 70%) as a yellow powder: mp 274-280° C. decomp; 1H NMR (500 MHz, DMSO-d6) δ 9.50 (s, 2H), 9.20 (d, J=2.0 Hz, 1H), 8.50 (dd, J=8.0, 2.0 Hz, 1H), 8.05 (d, J=8.0 Hz, 1H), 7.86 (d, J=7.0 Hz, 1H), 7.69 (d, J=8.5 Hz, 1H), 7.59 (d, J=1.5 Hz, 1H), 7.09 (dd, J=8.5, 2.0 Hz, 1H), 7.00 (d, J=2.0 Hz, 1H), 6.80 (d, J=7.5, 2.0 Hz, 1H), 4.42-4.41 (m, 2H), 3.73 (s, 3H), 3.43-3.41 (m, 2H), 3.11 (t, J=6.0 Hz, 2H), 2.10-2.08 (m, 2H); ESI MS m/z 439 [M+H]+; HPLC (Method A) 99.0% (AUC), tR=13.7 min.

Workup

  1. concentrationThe mixture was concentrated to dryness under reduced pressure
  2. additiondiluted with MeOH (2.0 mL) and Et2O (25 mL)
  3. filtrationThe resulting solids were collected by filtration
  4. customdried

Sources & evidence

ORD record
ord-611a1b54cb514b63bc3749e62e5b2578
Source dataset
uspto-grants-2014_01
Patent number
US08637501B2

Reaction notes

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