Acetic Anhydride → acetic acid (S)-4-[3-(4-chloro-phenoxy)-azetidin-1-yl]-2-[3-(3,5-dimethoxy-phenyl)-ureido]-butyl ester

HRID 1182138Notes

Reaction equation

HRID 1182138 reaction equation
[Cl:1][C:2]1[CH:31]=[CH:30][C:5]([O:6][CH:7]2[CH2:10][N:9]([CH2:11][CH2:12][C@H:13]([NH:16][C:17]([NH:19][C:20]3[CH:25]=[C:24]([O:26][CH3:27])[CH:23]=[C:22]([O:28][CH3:29])[CH:21]=3)=[O:18])[CH2:14][OH:15])[CH2:8]2)=[CH:4][CH:3]=1.C(N(CC)CC)C.[C:39](OC(=O)C)(=[O:41])[CH3:40]>C(Cl)Cl>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([O:6][CH:7]2[CH2:8][N:9]([CH2:11][CH2:12][C@H:13]([NH:16][C:17]([NH:19][C:20]3[CH:25]=[C:24]([O:26][CH3:27])[CH:23]=[C:22]([O:28][CH3:29])[CH:21]=3)=[O:18])[CH2:14][O:15][C:39](=[O:41])[CH3:40])[CH2:10]2)=[CH:30][CH:31]=1

Participants

5

Reactant 3

HCID 7918Acetic AnhydrideHCID 8471TriethylamineHCID 102384451-[(S)-3-[3-(4-chloro-phenoxy)-azetidin-1-yl]-1-hydroxymethyl-propyl)-3-(3,5-dimethoxy-phenyl)-urea

Product 1

HCID 10128172acetic acid (S)-4-[3-(4-chloro-phenoxy)-azetidin-1-yl]-2-[3-(3,5-dimethoxy-phenyl)-ureido]-butyl ester

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A solution of 1-{(S)-3-[3-(4-chloro-phenoxy)-azetidin-1-yl]-1-hydroxymethyl-propyl}-3-(3,5-dimethoxy-phenyl)-urea (0.05 g, 0.111 mmol) and triethylamine (0.031 ml, 0.222 mmol) in DCM (3 ml) is treated with acetic anhydride and left to stir at room temperature for 3 hours. The reaction mixture is partitioned between DCM and water. The organic phase is washed with sodium bicarbonate solution, dried over magnesium sulphate and evaporated to afford acetic acid (S)-4-[3-(4-chloro-phenoxy)-azetidin-1-yl]-2-[3-(3,5-dimethoxy-phenyl)-ureido]-butyl ester. [M+H] 492.08

Workup

  1. waitleft
  2. customThe reaction mixture is partitioned between DCM and water
  3. washThe organic phase is washed with sodium bicarbonate solution
  4. dry with materialdried over magnesium sulphate
  5. customevaporated

Sources & evidence

ORD record
ord-3c9ec38c96e1442eb84456a66a9eb8b3
Source dataset
uspto-grants-2007_10
Patent number
US07288537B2

Reaction notes

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