Diisopropylethylamine → 2-Methyl-6-{[2-(1-methyl-1H-imidazol-2-yl)thieno[3,2-b]pyridin-7-yl]oxy}benzo[b]thiophene-3-carboxylic acid cyclopropylamide

HRID 985321Notes

Reaction equation

HRID 985321 reaction equation
[CH3:1][C:2]1[S:6][C:5]2[CH:7]=[C:8]([O:11][C:12]3[CH:17]=[CH:16][N:15]=[C:14]4[CH:18]=[C:19]([C:21]5[N:22]([CH3:26])[CH:23]=[CH:24][N:25]=5)[S:20][C:13]=34)[CH:9]=[CH:10][C:4]=2[C:3]=1[C:27]([OH:29])=O.C([N:33](CC)[CH:34]([CH3:36])[CH3:35])(C)C.CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>CN(C=O)C>[CH:34]1([NH:33][C:27]([C:3]2[C:4]3[CH:10]=[CH:9][C:8]([O:11][C:12]4[CH:17]=[CH:16][N:15]=[C:14]5[CH:18]=[C:19]([C:21]6[N:22]([CH3:26])[CH:23]=[CH:24][N:25]=6)[S:20][C:13]=45)=[CH:7][C:5]=3[S:6][C:2]=2[CH3:1])=[O:29])[CH2:36][CH2:35]1

Participants

5

Reactant 3

HCID 81531DiisopropylethylamineHCID 2733084Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 221435462-Methyl-6-{[2-(1-methyl-1H-imidazol-2-yl)thieno[3,2-b]pyridin-7-yl]oxy}benzo[b]thiophene-3-carboxylic acid

Product 1

HCID 207679062-Methyl-6-{[2-(1-methyl-1H-imidazol-2-yl)thieno[3,2-b]pyridin-7-yl]oxy}benzo[b]thiophene-3-carboxylic acid cyclopropylamideYield 71%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
0 °C

Procedure

To a solution of 2-methyl-6-{[2-(1-methyl-1H-imidazol-2-yl)thieno[3,2-b]pyridin-7-yl]oxy}benzo[b]thiophene-3-carboxylic acid 117b (75 mg, 0.18 mmole) in DMF (1.5 mL) at 0° C. were added N,N-diisopropylethylamine (68 μL, 0.39 mmole) and HBTU (100 mg, 0.27 mmole). The reaction mixture was stirred 30 min at 0° C. then warmed to room temperature and stirred 18 hr. The mixture was poured onto H2O (25 mL) and the precipitate was collected by vacuum filtration. The filter paper was extracted with a mixture of CH2Cl2 (10 mL) and MeOH (10 mL). The solution was concentrated and the crude mixture was purified by silica gel chromatography (5% MeOH/EtOAc) to afford a pale yellow solid (58 mg, 71%). 1H NMR (DMSO-d6, 300 MHz) δ8.52 (1H, d, J=5.46 Hz), 8.46 (1H, d, J=4.33 Hz), 7.95 (1H, d, J=2.26 Hz), 7.88 (1H, s), 7.80 (1H, d, J=8.67 Hz), 7.40 (1H, s), 7.32 (1H, dd, J=2.26, 8.85 Hz), 7.02 (1H, s), 6.70 (1H, d, J=5.46 Hz), 3.98 (3H, s), 2.90 (1H, m), 2.57 (3H, s); 0.73 (2H, m), 0.57 (2H, m).

Workup

  1. temperaturethen warmed to room temperature
  2. stirringstirred 18 hr
  3. additionThe mixture was poured onto H2O (25 mL)
  4. filtrationthe precipitate was collected by vacuum filtration
  5. extractionThe filter paper was extracted with a mixture of CH2Cl2 (10 mL) and MeOH (10 mL)
  6. concentrationThe solution was concentrated
  7. customthe crude mixture was purified by silica gel chromatography (5% MeOH/EtOAc)

Sources & evidence

ORD record
ord-c2df7701505c4870ab09b6e367f795fc
Source dataset
uspto-grants-2005_03
Patent number
US06869962B2

Reaction notes

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