Trifluoroacetic acid → HCID 66756912, compound

HRID 1741520Notes

Reaction equation

HRID 1741520 reaction equation
[CH2:1]([O:8][C:9]([NH:11][C:12]1[C:13](=[O:45])[N:14]([CH2:18][C:19]([NH:21][CH:22]([C:31](=[O:44])[CH2:32][O:33][C:34](=[O:43])[C:35]2[C:40]([Cl:41])=[CH:39][CH:38]=[CH:37][C:36]=2[Cl:42])[CH2:23][C:24]([O:26]C(C)(C)C)=[O:25])=[O:20])[CH:15]=[CH:16][CH:17]=1)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.FC(F)(F)C(O)=O>ClCCl>[CH2:1]([O:8][C:9]([NH:11][C:12]1[C:13](=[O:45])[N:14]([CH2:18][C:19]([NH:21][CH:22]([C:31](=[O:44])[CH2:32][O:33][C:34](=[O:43])[C:35]2[C:40]([Cl:41])=[CH:39][CH:38]=[CH:37][C:36]=2[Cl:42])[CH2:23][C:24]([OH:26])=[O:25])=[O:20])[CH:15]=[CH:16][CH:17]=1)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 66756586HCID 66756586, compound

Product 1

HCID 66756912HCID 66756912, compoundYield 85%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
20 °C

Procedure

The ester (56a) (210 mg, 0.356 mmol) in dichloromethane (0.5 ml) was cooled to 0° C. and treated with trifluoroacetic acid (0.5 ml), stirred and warmed to 20° C. over 30 minutes. The solution was evaporated to dryness under reduced pressure, redissolved in dichloromethane and concentrated (×3). The residue was triturated with ethyl acetate and diluted with ether to afford the title compound 162 mg (85%) as a colorless solid: m.p. 165-8° C. (decomposition); [α]D23 -38.8° (c 0.1, CH3OH); IR (KBr) 3332, 3275, 1723, 1658, 1649, 1597, 1581, 1562, 1526, 1432, 1385, 1258, 1218, 1206; 1H NMR (d6 -DMSO) δ8.96 (1H, d, J=7.3), 8.34 (1H, s), 7.85 (1H, dd, J=7.3), 7.58 (3H, m), 7.35 (5H, m), 6.29 (1H, t, J=7.3), 5.26 (2H, m), 5.15 (2H, s), 4.69 (3H, m), 2.75 (2H, m). Anal. Calcd. C27H23N3O9Cl2 : C, 53.66; H, 3.84; N, 6.95. Found: C, 53.36; H, 3.90; N, 6.81. M.S. (+FAB); 604 (M+ +1), 285, 241, 195, 173, 149, 91.

Workup

  1. customThe solution was evaporated to dryness under reduced pressure
  2. dissolutionredissolved in dichloromethane
  3. concentrationconcentrated (×3)
  4. customThe residue was triturated with ethyl acetate
  5. additiondiluted with ether

Sources & evidence

ORD record
ord-9fbd729e817c48a6b8f39e98720ac482
Source dataset
uspto-grants-1999_10
Patent number
US05973111

Reaction notes

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