Acetic Anhydride → HCID 44427835, compound

HRID 404578Notes

Reaction equation

HRID 404578 reaction equation
[Cl:1][C:2]1[C:7]([Cl:8])=[CH:6][CH:5]=[CH:4][C:3]=1[N:9]1[CH2:14][CH2:13][N:12]([CH2:15][CH:16]([OH:34])[CH2:17][CH2:18][NH:19][C:20](=[O:33])[C:21]2[CH:26]=[CH:25][C:24]([C:27]3[CH:32]=[CH:31][CH:30]=[CH:29][N:28]=3)=[CH:23][CH:22]=2)[CH2:11][CH2:10]1.[C:35](OC(=O)C)(=[O:37])[CH3:36].C(N(CC)CC)C>C(Cl)Cl>[C:35]([O:34][CH:16]([CH2:17][CH2:18][NH:19][C:20](=[O:33])[C:21]1[CH:26]=[CH:25][C:24]([C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][N:28]=2)=[CH:23][CH:22]=1)[CH2:15][N:12]1[CH2:11][CH2:10][N:9]([C:3]2[CH:4]=[CH:5][CH:6]=[C:7]([Cl:8])[C:2]=2[Cl:1])[CH2:14][CH2:13]1)(=[O:37])[CH3:36]

Participants

5

Reactant 3

HCID 7918Acetic AnhydrideHCID 8471TriethylamineHCID 44427827HCID 44427827, compound

Product 1

HCID 44427835HCID 44427835, compound

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A solution of 16 (0.25 g, 0.5 mmol) in 10 mL of CH2Cl2 was treated with 70 μL (0.75 mmol) acetic anhydride followed by 140 μL (1.0 mmol) triethylamine. After stirring for 16 h, the mixture was washed with sodium bicarbonate solution, dried with sodium sulphate and purified by flash chromatography. Yield: 0.22 g (82%). Mp. (oxalate): foam. 1H NMR (CDCl3): δ 1.84 (m, 1H), 2.05 (m, 1H), 2.12 (s, 3H), 2.52 (dd, J 13.2, 5.2, 1H), 2.65 (m, 5H), 2.99 (s, 4H), 3.25 (dq, J 9.7, 5.00, 1H), 3.81 (dt, J 12.3, 5.7, 1H), 5.19 (m, 1H), 6.89 (dd, J 7.7, 1.8, 1H), 7.06-7.17 (m, 3H), 7.26 (ddd, J 6.1, 4.8, 2.44, 1H), 7.73-7.76 (m, 2H), 7.93 (d, J 8.6, 2H), 8.07 (d, J 8.6, 2H), 8.70 (td, J 4.83, 1.50, 1.50, 1H). 13C NMR (CDCl3): δ 21.0, 32.4, 36.1, 51.3, 53.7, 61.5, 69.6, 118.6, 120.8, 122.7, 124.5, 127.0, 127.4, 127.5, 133.9, 134.7, 136.9, 142.1, 149.8, 151.1, 156.2, 167.1, 171.5, Anal. (C26H30Cl2N4O3.1.5(COOH)2.H2O) C, H, N.

Workup

  1. washthe mixture was washed with sodium bicarbonate solution
  2. dry with materialdried with sodium sulphate
  3. custompurified by flash chromatography

Sources & evidence

ORD record
ord-f4cf9986fad74b09a1ea95be9672a981
Source dataset
uspto-grants-2014_06
Patent number
US08748608B2

Reaction notes

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