Diisopropylethylamine → 5-Chloro-1H-indole-7-carboxylic acid (4-tert-butyl-benzyl)-[2-(3-difluoromethoxy-phenyl)-ethyl]-amide

HRID 855409Notes

Reaction equation

HRID 855409 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:68]=[CH:67][C:52]([CH2:53][NH:54][CH2:55][CH2:56][C:57]2[CH:62]=[CH:61][CH:60]=[C:59]([O:63][CH:64]([F:66])[F:65])[CH:58]=2)=[CH:51][CH:50]=1)([CH3:48])([CH3:47])[CH3:46]>CN(C=O)C.O>[C:45]([C:49]1[CH:68]=[CH:67][C:52]([CH2:53][N:54]([CH2:55][CH2:56][C:57]2[CH:62]=[CH:61][CH:60]=[C:59]([O:63][CH:64]([F:66])[F:65])[CH:58]=2)[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 68576819HCID 68576819, compound

Product 1

HCID 866030995-Chloro-1H-indole-7-carboxylic acid (4-tert-butyl-benzyl)-[2-(3-difluoromethoxy-phenyl)-ethyl]-amideYield 74.4%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent2×

Procedure

To a solution of 59 mg (0.3 mmol) of 5-chloro-1H-indole-7-carboxylic acid and 96 mg of TBTU (0.3 mmol) in 3 ml DMF, were added 0.26 ml (1.5 mmol) of N,N-diisopropylethyl amine. After stirring for 5 min at rt, 100 mg (0.3 mmol) of (4-tert-butyl-benzyl)-[2-(3-difluoromethoxy-phenyl)-ethyl]-amine in 2 ml DMF were added. After stirring for 4 h at rt, the reaction mixture was diluted with 50 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; EtOAc/heptane 1:6) to give 114 mg white solid (67%). MS(ISP) 512.2 (M+H)+.

Workup

  1. stirringAfter stirring for 4 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; EtOAc/heptane 1:6)

Sources & evidence

ORD record
ord-2699d8674a6048c19a4cee915c4765ed
Source dataset
uspto-grants-2007_08
Patent number
US07259183B2

Reaction notes

Loading…