Diisopropylethylamine → [Rac]-5-chloro-1h-indole-7-carboxylic acid (4-tert-butyl-benzyl)-[2-(4-fluoro-phenyl)-2-hydroxy-ethyl]-amide

HRID 855385Notes

Reaction equation

HRID 855385 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]2[C:8](=[C:9]([C:11]([OH:13])=O)[CH:10]=1)[NH:7][CH:6]=[CH:5]2.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:45]([C:49]1[CH:66]=[CH:65][C:52]([CH2:53][NH:54][CH2:55][CH:56]([C:58]2[CH:63]=[CH:62][C:61]([F:64])=[CH:60][CH:59]=2)[OH:57])=[CH:51][CH:50]=1)([CH3:48])([CH3:47])[CH3:46]>CN(C=O)C.O>[C:45]([C:49]1[CH:66]=[CH:65][C:52]([CH2:53][N:54]([CH2:55][CH:56]([C:58]2[CH:59]=[CH:60][C:61]([F:64])=[CH:62][CH:63]=2)[OH:57])[C:11]([C:9]2[CH:10]=[C:2]([Cl:1])[CH:3]=[C:4]3[C:8]=2[NH:7][CH:6]=[CH:5]3)=[O:13])=[CH:51][CH:50]=1)([CH3:48])([CH3:46])[CH3:47]

Participants

7

Reactant 4

HCID 81531DiisopropylethylamineHCID 2733207O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 668685635-chloro-1H-indole-7-carboxylic acidHCID 69342608[Rac]-(4-tert-butyl-benzyl)-[2-(4-fluoro-phenyl)-2-hydroxy-ethyl]-amine

Product 1

HCID 69513655[Rac]-5-chloro-1h-indole-7-carboxylic acid (4-tert-butyl-benzyl)-[2-(4-fluoro-phenyl)-2-hydroxy-ethyl]-amideYield 59.8%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

To a solution of 43 mg (0.22 mmol) of 5-chloro-1H-indole-7-carboxylic acid and 70 mg of TBTU (0.22 mmol) in 3 ml DMF, were added 0.19 ml (1.1 mmol) of N,N-diisopropylethyl amine. After stirring for 5 min at rt, 81 mg (0.22 mmol) of [rac]-(4-tert-butyl-benzyl)-[2-(4-fluoro-phenyl)-2-hydroxy-ethyl]-amine were added. After stirring for 17 h at rt, the reaction mixture was diluted with 30 ml water and extracted with EtOAc (2×). The combined organic phases were washed with water and brine, dried with magnesium sulfate, filtered and concentrated in vacuo. The residue was purified by column chromatography (8 g silica gel; heptane/EtOAc 2:1) to give 63 mg (55%) of a light yellow foam. MS (ISP) 479.4 (M+H)+.

Workup

  1. stirringAfter stirring for 17 h at rt
  2. extractionextracted with EtOAc (2×)
  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 residue was purified by column chromatography (8 g silica gel; heptane/EtOAc 2:1)

Sources & evidence

ORD record
ord-181e366430354a48bddad4c96ac6982b
Source dataset
uspto-grants-2007_08
Patent number
US07259183B2

Reaction notes

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