1H-Indole-7-carboxylic acid → HCID 86603051, compound

HRID 855347Notes

Reaction equation

HRID 855347 reaction equation
[NH:1]1[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][C:8]=2[C:10]([OH:12])=O)[CH:3]=[CH:2]1.CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.[B-](F)(F)(F)F.C(N(CC)C(C)C)(C)C.[C:44]([C:48]1[CH:64]=[CH:63][C:51]([CH2:52][NH:53][CH2:54][CH2:55][C:56]2[CH:61]=[CH:60][C:59]([CH3:62])=[CH:58][CH:57]=2)=[CH:50][CH:49]=1)([CH3:47])([CH3:46])[CH3:45]>CN(C=O)C.O>[C:44]([C:48]1[CH:64]=[CH:63][C:51]([CH2:52][N:53]([CH2:54][CH2:55][C:56]2[CH:57]=[CH:58][C:59]([CH3:62])=[CH:60][CH:61]=2)[C:10]([C:8]2[CH:7]=[CH:6][CH:5]=[C:4]3[C:9]=2[NH:1][CH:2]=[CH:3]3)=[O:12])=[CH:50][CH:49]=1)([CH3:47])([CH3:45])[CH3:46]

Participants

7

Reactant 4

HCID 742811H-Indole-7-carboxylic acidHCID 81531DiisopropylethylamineHCID 2733207O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 68564049HCID 68564049, compound

Product 1

HCID 86603051HCID 86603051, compoundYield 87.1%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent2×

Procedure

To a solution of 48 mg (0.3 mmol) of 1H-indole-7-carboxylic acid and 96 mg of TBTU (0.3 mmol) in 4 ml DMF, were added 0.26 ml (1.5 mmol) of N,N-diisopropylethyl amine. After stirring for 5 min at rt, 89 mg (0.3 mmol) (4-tert-butyl-benzyl)-(2-p-tolyl-ethyl)-amine in 1 ml DMF was added. After stirring for 3 h at rt, the reaction mixture was diluted with 50 ml water and extracted with 2×50 ml EtOAc. The combined organic phases were washed with water and brine, dried with magnesium sulfate, filtered and concentrated in vacuo. The yellow residue was purified by column chromatography (8 g silica gel; heptane/EtOAc 9:1) to give 111 mg (86%) of a white solid. MS (ISP) 425.3 (M+H)+.

Workup

  1. stirringAfter stirring for 3 h at rt
  2. extractionextracted with 2×50 ml EtOAc
  3. washThe combined organic phases were washed with water and brine
  4. dry with materialdried with magnesium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe yellow residue was purified by column chromatography (8 g silica gel; heptane/EtOAc 9:1)

Sources & evidence

ORD record
ord-ee16c3d71fb54272a58d4705b50afd32
Source dataset
uspto-grants-2007_08
Patent number
US07259183B2

Reaction notes

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