Methanol → 4-Hydroxy-1-(2-morpholin-4-yl-ethyl)-5-oxo-2,5-dihydro-1H-pyrrole-3-carboxylic acid 3,4-dichloro-benzylamide

HRID 2214693Notes

Reaction equation

HRID 2214693 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([CH:18]=[CH:19][C:20]=1[Cl:21])[CH2:5][NH:6][C:7](=[O:17])[CH:8]=[C:9]1[C:13](=[O:14])OC(C)(C)[O:10]1.[CH2:22]=[N:23][CH2:24][CH2:25][N:26]1[CH2:31][CH2:30][O:29][CH2:28][CH2:27]1.CO>>[Cl:1][C:2]1[CH:3]=[C:4]([CH:18]=[CH:19][C:20]=1[Cl:21])[CH2:5][NH:6][C:7]([C:8]1[CH2:22][N:23]([CH2:24][CH2:25][N:26]2[CH2:31][CH2:30][O:29][CH2:28][CH2:27]2)[C:13](=[O:14])[C:9]=1[OH:10])=[O:17]

Participants

4

Reactant 3

HCID 887MethanolHCID 15174513Methylene-(2-morpholin-4-yl-ethyl)-amineHCID 69655849N-(3,4-Dichloro-benzyl)-2-(2,2-dimethyl-5-oxo-[1,3]dioxolan-4-ylidene)-acetamide

Product 1

HCID 547046374-Hydroxy-1-(2-morpholin-4-yl-ethyl)-5-oxo-2,5-dihydro-1H-pyrrole-3-carboxylic acid 3,4-dichloro-benzylamideYield 22%

Procedure

A mixture of N-(3,4-dichloro-benzyl)-2-(2,2-dimethyl-5-oxo-[1,3]dioxolan-4-ylidene)-acetamide (66 mg, 0.2 mmol) and a 0.2 mmol solution of methylene-(2-morpholin-4-yl-ethyl)-amine in methanol (1.5 mL, 0.3 mmol) was heated at 70° C. for 1.5 h. The reaction mixture was then cooled to room temperature and purified by preparative HPLC using methanol/water (0.1% TFA) as eluent. The fractions containing the product were combined and concentrated to give a white powder (23.3 mg, 22% yield). 1H NMR (500 MHz, DMSO) δ: 9.50 (1H, br s), 8.08 (1H, t, J=6.2 Hz), 7.59 (1H, d, J=8.2 Hz), 7.53 (1H, d, J=1.8 Hz), 7.28 (1H, dd, J=8.2, 1.8 Hz), 4.42 (2H, d, J=6.1 Hz), 4.04 (2H, s), 4.02–3.95 (2H, m), 3.81–3.77 (2H, m), 3.73–3.37 (6H, m), 3.15–3.06 (2H, m). HRMS calcd for C18H22Cl2N3O4 (M+H): 414.09875. found: 414.0987.

Workup

  1. custompurified by preparative HPLC
  2. additionThe fractions containing the product
  3. concentrationconcentrated

Sources & evidence

ORD record
ord-b0f93f22e5304b54bc009994ffc6d04a
Source dataset
uspto-grants-2006_09
Patent number
US07109186B2

Reaction notes

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