Dichloromethane → N-Phenyl-N'-[2-(2,3,4,5-tetrahydroazepino[4,5-b]indol-6(1H)-yl)ethyl]urea hydrochloride

HRID 2306963Notes

Reaction equation

HRID 2306963 reaction equation
[NH:1]([C:8]([NH:10][CH2:11][CH2:12][N:13]1[C:21]2[CH:20]=[CH:19][CH:18]=[CH:17][C:16]=2[C:15]2[CH2:22][CH2:23][N:24](C(OC(C)(C)C)=O)[CH2:25][CH2:26][C:14]1=2)=[O:9])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(C(O)=O)(F)(F)F.C(Cl)[Cl:42]>>[ClH:42].[C:2]1([NH:1][C:8]([NH:10][CH2:11][CH2:12][N:13]2[C:21]3[CH:20]=[CH:19][CH:18]=[CH:17][C:16]=3[C:15]3[CH2:22][CH2:23][NH:24][CH2:25][CH2:26][C:14]2=3)=[O:9])[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

4

Reactant 3

HCID 6344DichloromethaneHCID 6422Trifluoroacetic acidHCID 22396805tert-butyl 6-{2-[(anilinocarbonyl)amino]ethyl}-1,4,5,6-tetrahydroazepino[4,5-b]indole-3(2H)-carboxylate

Product 1

HCID 22396703N-Phenyl-N'-[2-(2,3,4,5-tetrahydroazepino[4,5-b]indol-6(1H)-yl)ethyl]urea hydrochlorideYield 88%

Procedure

tert-Butyl 6-{2-[(anilinocarbonyl)amino]ethyl}-1,4,5,6-tetrahydroazepino[4,5-b]indole-3(2H)-carboxylate (0.0390 g, 0.0869 mmol) was dissolved in CH2Cl2 (2 mL) at rt. CF3CO2H (1 mL) was added, then the reaction mixture was stirred for 45 min. The reaction mixture was concentrated and the residue was taken up in EtOAc (2 mL). 1 N HCl in Et2O (2 mL) was added and the precipitated salt was collected by filtration. N-Phenyl-N′-[2-(2,3,4,5-tetrahydroazepino[4,5-b]indol-6(1H)-yl)ethyl]urea hydrochloride (0.0296 g) was obtained in 88% yield. 1H NMR (300 MHz, CD3OD) δ 3.19-3.22, 3.35-3.38, 3.43-3.53, 4.35, 6.97-7.03, 7.07, 7.17, 7.25-7.27, 7.44, 7.48; MS (ESI+) for C21H24N4O m/z 349.2 (M+H)+.

Workup

  1. concentrationThe reaction mixture was concentrated
  2. addition1 N HCl in Et2O (2 mL) was added
  3. filtrationthe precipitated salt was collected by filtration

Sources & evidence

ORD record
ord-ac7825f924d9475c916ca60cc9658662
Source dataset
uspto-grants-2004_12
Patent number
US06828314B2

Reaction notes

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