Pyridine → Benzyl 3-[1-(2-acetylaminoethyl)-7-bromo-3-methyl-1H-indol-6-ylmethoxy]-4-{4-[3-(2-methoxybenzyloxy)propoxy]phenyl}piperidine-1-carboxylate

HRID 1176332Notes

Reaction equation

HRID 1176332 reaction equation
[NH2:1][CH2:2][CH2:3][N:4]1[C:12]2[C:7](=[CH:8][CH:9]=[C:10]([CH2:14][O:15][CH:16]3[CH:21]([C:22]4[CH:27]=[CH:26][C:25]([O:28][CH2:29][CH2:30][CH2:31][O:32][CH2:33][C:34]5[CH:39]=[CH:38][CH:37]=[CH:36][C:35]=5[O:40][CH3:41])=[CH:24][CH:23]=4)[CH2:20][CH2:19][N:18]([C:42]([O:44][CH2:45][C:46]4[CH:51]=[CH:50][CH:49]=[CH:48][CH:47]=4)=[O:43])[CH2:17]3)[C:11]=2[Br:13])[C:6]([CH3:52])=[CH:5]1.N1C=CC=CC=1.[C:59](OC(=O)C)(=[O:61])[CH3:60]>ClCCl>[C:59]([NH:1][CH2:2][CH2:3][N:4]1[C:12]2[C:7](=[CH:8][CH:9]=[C:10]([CH2:14][O:15][CH:16]3[CH:21]([C:22]4[CH:23]=[CH:24][C:25]([O:28][CH2:29][CH2:30][CH2:31][O:32][CH2:33][C:34]5[CH:39]=[CH:38][CH:37]=[CH:36][C:35]=5[O:40][CH3:41])=[CH:26][CH:27]=4)[CH2:20][CH2:19][N:18]([C:42]([O:44][CH2:45][C:46]4[CH:51]=[CH:50][CH:49]=[CH:48][CH:47]=4)=[O:43])[CH2:17]3)[C:11]=2[Br:13])[C:6]([CH3:52])=[CH:5]1)(=[O:61])[CH3:60]

Participants

5

Reactant 3

HCID 1049PyridineHCID 7918Acetic AnhydrideHCID 68504218benzyl 3-[1-(2-aminoethyl)-7-bromo-3-methyl-1H-indol-6-ylmethoxy]-4-{4-[3-(2-methoxybenzyloxy)propoxy]phenyl}piperidine-1-carboxylate

Product 1

HCID 68497500Benzyl 3-[1-(2-acetylaminoethyl)-7-bromo-3-methyl-1H-indol-6-ylmethoxy]-4-{4-[3-(2-methoxybenzyloxy)propoxy]phenyl}piperidine-1-carboxylate

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

The solution of 0.185 g of benzyl 3-[1-(2-aminoethyl)-7-bromo-3-methyl-1H-indol-6-ylmethoxy]-4-{4-[3-(2-methoxybenzyloxy)propoxy]phenyl}piperidine-1-carboxylate in 1.1 ml of dichloromethane is admixed successively with 0.50 ml of pyridine and 0.21 ml of acetic anhydride and stirred at room temperature for 2 hours. The reaction mixture is poured onto water (40 ml) and extracted with ethyl acetate (2×40 ml). The organic phases are washed successively with 1M sodium hydrogencarbonate solution (40 ml) and brine (40 ml), dried over sodium sulphate, filtered and concentrated by evaporation. The title compound is obtained as a white foam from the residue by means of flash chromatography (SiO2 60F). Rf=0.17 (EtOAc-heptane=4:1); Rt=5.89.

Workup

  1. additionThe reaction mixture is poured onto water (40 ml)
  2. extractionextracted with ethyl acetate (2×40 ml)
  3. washThe organic phases are washed successively with 1M sodium hydrogencarbonate solution (40 ml) and brine (40 ml)
  4. dry with materialdried over sodium sulphate
  5. filtrationfiltered
  6. concentrationconcentrated by evaporation

Sources & evidence

ORD record
ord-0e05f316692e494aac1c33bc199e6d32
Source dataset
uspto-grants-2010_11
Patent number
US07842688B2

Reaction notes

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