4-Methoxybutanoyl chloride → HCID 77506366, compound

HRID 1176453Notes

Reaction equation

HRID 1176453 reaction equation
[O:1]1[C:6]2[CH:7]=[CH:8][CH:9]=[CH:10][C:5]=2[NH:4][CH2:3][CH:2]1[CH2:11][O:12][CH:13]1[CH:18]([C:19]2[CH:24]=[CH:23][C:22]([O:25][CH2:26][CH2:27][CH2:28][O:29][CH2:30][C:31]3[CH:36]=[CH:35][CH:34]=[CH:33][C:32]=3[O:37][CH3:38])=[CH:21][CH:20]=2)[CH2:17][CH2:16][N:15]([C:39]([O:41][C:42]([CH3:45])([CH3:44])[CH3:43])=[O:40])[CH2:14]1.[CH3:46][O:47][CH2:48][CH2:49][CH2:50][C:51](Cl)=[O:52]>C(Cl)(Cl)Cl.C(N(CC)CC)C>[CH3:38][O:37][C:32]1[CH:33]=[CH:34][CH:35]=[CH:36][C:31]=1[CH2:30][O:29][CH2:28][CH2:27][CH2:26][O:25][C:22]1[CH:23]=[CH:24][C:19]([CH:18]2[CH2:17][CH2:16][N:15]([C:39]([O:41][C:42]([CH3:45])([CH3:44])[CH3:43])=[O:40])[CH2:14][CH:13]2[O:12][CH2:11][CH:2]2[CH2:3][N:4]([C:51](=[O:52])[CH2:50][CH2:49][CH2:48][O:47][CH3:46])[C:5]3[CH:10]=[CH:9][CH:8]=[CH:7][C:6]=3[O:1]2)=[CH:20][CH:21]=1

Participants

5

Reactant 2

HCID 127949894-Methoxybutanoyl chlorideHCID 77506189HCID 77506189, compound

Product 1

HCID 77506366HCID 77506366, compound

Reagents, catalysts & solvents 2

HCID 6212ChloroformSolventHCID 8471TriethylamineSolvent

Procedure

A solution of 0.33 g of tert-butyl 3-(3,4-dihydro-2H-benzo[1,4]oxazin-2(R,S)-ylmethoxy)-4-{4-[3-(2-methoxybenzyloxy)propoxy]phenyl}piperidine-1-carboxylate in 40 ml of chloroform and 0.23 ml of triethylamine is admixed at room temperature with 0.23 g of 4-methoxybutyryl chloride and stirred over 30 minutes. The reaction mixture is washed successively with 1N HCl and 1N NaOH, dried over sodium sulphate and concentrated by evaporation. The title compound is obtained as a colourless oil from the residue by means of flash chromatography (SiO2 60F). Rf=0.27 (1:1.5 EtOAc-heptane); Rt=6.05.

Workup

  1. washThe reaction mixture is washed successively with 1N HCl and 1N NaOH
  2. dry with materialdried over sodium sulphate
  3. concentrationconcentrated by evaporation

Sources & evidence

ORD record
ord-5b2debd71cb84ea4851c41d4217b6164
Source dataset
uspto-grants-2010_11
Patent number
US07842688B2

Reaction notes

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