Acetic Anhydride → HCID 24988505, compound

HRID 406509Notes

Reaction equation

HRID 406509 reaction equation
[NH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[CH:8]1[CH2:13][CH2:12][N:11]([CH:14]2[CH2:18][CH2:17][N:16]([C:19](=[O:32])[CH2:20][NH:21][C:22](=[O:31])[C:23]3[CH:28]=[CH:27][C:26]([Cl:29])=[C:25]([Cl:30])[CH:24]=3)[CH2:15]2)[CH2:10][CH2:9]1.C(N(CC)CC)C.[C:40](OC(=O)C)(=[O:42])[CH3:41]>C(Cl)Cl>[C:40]([NH:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[CH:8]1[CH2:9][CH2:10][N:11]([CH:14]2[CH2:18][CH2:17][N:16]([C:19](=[O:32])[CH2:20][NH:21][C:22](=[O:31])[C:23]3[CH:28]=[CH:27][C:26]([Cl:29])=[C:25]([Cl:30])[CH:24]=3)[CH2:15]2)[CH2:12][CH2:13]1)(=[O:42])[CH3:41]

Participants

5

Reactant 3

HCID 7918Acetic AnhydrideHCID 8471TriethylamineHCID 59764690HCID 59764690, compound

Product 1

HCID 24988505HCID 24988505, compoundYield 14%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To N-(2-(3-(4-(2-aminophenyl)piperidin-1-yl)pyrrolidin-1-yl)-2-oxoethyl)-3,4-dichlorobenzamide (Example #4.149, 0.050 g, 0.10 mmol) in DCM (1 mL) was sequentially added triethylamine (0.044 mL, 0.32 mmol) and acetic anhydride (10.9 μL, 0.116 mmol). The reaction mixture was stirred at room temperature for about 16 h. The solvent was removed in vacuo and the residue purified by RP-HPLC (10% acetonitrile/0.05M aqueous ammonium acetate, buffered to pH 4.5 for 3 min., 5% to 60% acetonitrile/0.05M aqueous ammonium acetate over 6 min at 22.5 mL/min with 2.5 mL/min. acetonitrile at-column dilution; APCI positive mode detection; Xterra prep. MS C18. 19×50 mm column) to afford N-(2-(3-(4-(2-acetamidophenyl)piperidin-1-yl)pyrrolidin-1-yl)-2-oxoethyl)-3,4-dichlorobenzamide (0.0075 g, 0.014 mmol). RP-HPLC (Table 1, Method a) Rt 1.92 min; nm/z: (M+H)+ 517.

Workup

  1. customThe solvent was removed in vacuo
  2. customthe residue purified by RP-HPLC (10% acetonitrile/0.05M aqueous ammonium acetate, buffered to pH 4.5 for 3 min., 5% to 60% acetonitrile/0.05M aqueous ammonium acetate over 6 min at 22.5 mL/min with 2.5 mL/min. acetonitrile at-column dilution; APCI positive mode detection; Xterra prep. MS C18. 19×50 mm column)

Sources & evidence

ORD record
ord-9308bd8013814936984769c7670479e5
Source dataset
uspto-grants-2014_06
Patent number
US08754107B2

Reaction notes

Loading…