Dichloromethane → 2-{4-[2-Acetylamino-3-(4-fluorophenyl)propionyl]-3-cyclopropyl-methyl-2-oxo-piperazin-1-yl}-N-methyl-3-naphthalen-2-yl propionamide

HRID 720172Notes

Reaction equation

HRID 720172 reaction equation
[NH2:1][CH:2]([CH2:32][C:33]1[CH:38]=[CH:37][C:36]([F:39])=[CH:35][CH:34]=1)[C:3]([N:5]1[CH2:10][CH2:9][N:8]([CH:11]([CH2:16][C:17]2[CH:26]=[CH:25][C:24]3[C:19](=[CH:20][CH:21]=[CH:22][CH:23]=3)[CH:18]=2)[C:12]([NH:14][CH3:15])=[O:13])[C:7](=[O:27])[CH:6]1[CH2:28]C1CC1)=[O:4].C(N([CH2:45][CH3:46])CC)C.[C:47](Cl)(=[O:49])[CH3:48].[CH2:51](Cl)Cl>>[C:47]([NH:1][CH:2]([CH2:32][C:33]1[CH:38]=[CH:37][C:36]([F:39])=[CH:35][CH:34]=1)[C:3]([N:5]1[CH2:10][CH2:9][N:8]([CH:11]([CH2:16][C:17]2[CH:26]=[CH:25][C:24]3[C:19](=[CH:20][CH:21]=[CH:22][CH:23]=3)[CH:18]=2)[C:12]([NH:14][CH3:15])=[O:13])[C:7](=[O:27])[C:6]1([CH3:28])[CH:46]1[CH2:45][CH2:51]1)=[O:4])(=[O:49])[CH3:48]

Participants

5

Reactant 4

HCID 6344Dichloromethane2×HCID 6367Acetyl chlorideHCID 8471TriethylamineHCID 102564532-[4-[2-amino-3-(4-fluorophenyl)-propionyl]-3-cyclopropylmethyl-2-oxo-piperazin-1-yl}-N-methyl-3-naphthalen-2-yl-propionamide

Product 1

HCID 865959292-{4-[2-Acetylamino-3-(4-fluorophenyl)propionyl]-3-cyclopropyl-methyl-2-oxo-piperazin-1-yl}-N-methyl-3-naphthalen-2-yl propionamide

Procedure

To a solution of 2-[4-[2-amino-3-(4-fluorophenyl)-propionyl]-3-cyclopropylmethyl-2-oxo-piperazin-1-yl}-N-methyl-3-naphthalen-2-yl-propionamide, 18, (100 mg, 0.155 mmol) and triethylamine (20 mg, 0.2 mmole) in CH2Cl2 (5 mL) at 0° C. is added dropwise acetyl chloride (13.4 mg, 0.17 mmole). The reaction is allowed to warm to room temperature and stirred 1 hour. The reaction is diluted with CH2Cl2 (10 mL) and extracted with water then brine, dried and concentrated in vacuo to afford a residue which is purified over silica gel to afford the desired product. 13C NMR (CDCl3, 75 MHz), 170.12, 169.90, 169.82, 169.49, 169.35, 167.70, 134.07, 133.67, 132.57, 131.64, 128.65, 127.83, 127.80, 127.70, 127.51, 127.23, 127.15, 126.64, 126.15, 115.87, 115.79, 115.60, 115.51, 58.65, 57.40, 56.61, 56.43, 50.61, 50.09, 42.76, 41.96, 41.55, 39.84, 38.39, 37.77, 36.89, 34.65, 34.09, 26.59, 23.26, 23.07, 7.20, 7.12, 4.83, 4.69, 4.45; MS, (ES-MS) m/z 573 (M+1).

Workup

  1. extractionextracted with water
  2. dry with materialbrine, dried
  3. concentrationconcentrated in vacuo
  4. customto afford a residue which
  5. customis purified over silica gel

Sources & evidence

ORD record
ord-da85c5939c2a487cb2b669773f7f0905
Source dataset
uspto-grants-2006_11
Patent number
US07132539B2

Reaction notes

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