Triethylamine → 10H-indolo[3,2-b]quinoline-11-carboxylic acid (2-dimethylamino-ethyl)amide

HRID 12262

Reaction equation

HRID 12262 reaction equation
[CH:1]1[CH:10]=[CH:9][CH:8]=[C:7]2[C:2]=1[C:3]([C:18]([OH:20])=O)=[C:4]1[NH:17][C:16]3[C:11](=[CH:12][CH:13]=[CH:14][CH:15]=3)[C:5]1=[N:6]2.[CH3:21][N:22]([CH3:26])[CH2:23][CH2:24][NH2:25].C(N(CC)CC)C>O=S(Cl)Cl.C(Cl)Cl>[CH3:21][N:22]([CH3:26])[CH2:23][CH2:24][NH:25][C:18]([C:3]1[C:2]2[C:7](=[CH:8][CH:9]=[CH:10][CH:1]=2)[N:6]=[C:5]2[C:11]3[C:16]([NH:17][C:4]=12)=[CH:15][CH:14]=[CH:13][CH:12]=3)=[O:20]

Participants

6

Reactant 3

HCID 8471TriethylamineHCID 66053N,N-DimethylethylenediamineHCID 1010675710H-Indolo[3,2-b]quinoline-11-carboxylic acid

Product 1

HCID 1147303410H-indolo[3,2-b]quinoline-11-carboxylic acid (2-dimethylamino-ethyl)amideYield 61%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 24386Thionyl ChlorideSolvent

Procedure

10H-indolo[3,2-b]quinoline-11-carboxylic acid (0.5 g, 1.9 mmol) was dissolved in 20 ml of refluxing SOCl2, After 6 hours a clear solution was obtained, and all volatiles were removed in vacuo. The crude acid chloride was suspended in 10 ml of CH2Cl2. A solution of N,N-dimethylethylendiamine (0.2 mL, 2.26 mmol) and triethylamine (2.2 ml) in 10 ml of CH2Cl2 was added at room temperature, and the mixture was stirred for 14 hours. The organic phase was washed (NaHCO3, brine) and dried (MgSO4). Removal of the solvent and purification by chromatography on alumina (CH2Cl2/MeOH, 90:10) yielded the desired compound (0.38 g, 61%) as a solid. m. p. 175-176° C. 1H-NMR [MeOD, _, ppm]: 8.16 (d, J=7.8 Hz, 1H), 7.92 (m, 2H), 7.35-7.20 (m, 3H), 7.04 (m, 2H), 3.62 (m, 2H, CH2NO), 2.55 (m, 2H, CH2N(CH3)2), 2.29 (s, 6H, N(CH3)j. MS (EI, m/z) 277 (M++1).

Workup

  1. customwas obtained
  2. customall volatiles were removed in vacuo
  3. washThe organic phase was washed (NaHCO3, brine)
  4. dry with materialdried (MgSO4)
  5. customRemoval of the solvent and purification by chromatography on alumina (CH2Cl2/MeOH, 90:10)

Sources & evidence

ORD record
ord-5ef6c1c4b096459d8233747f623d138d
Source dataset
uspto-grants-2010_06
Patent number
US07728000B2

Linked notes

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