Trifluoroacetic acid → HCID 66756912, compound

HRID 1182527Notes

Reaction equation

HRID 1182527 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 (x3). 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) δ 8.96 (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. N-2-(6-Benzyl-1,2-dihydro-2-oxo-3-(3-phenylpropionyl) amino-1-pyridyl)acetyl-3-amino-5-(2,6-dichloro-benzoyloxy)-4-oxo-pentanoic acid (57b; P), was prepared by the method described for 57a which afforded the title compound (78%) as colorless crystals: m.p. 116-120° C. (decomposition); [α]D26 −41.1° (c 0.1, CH3OH); IR (KBr) 3299, 1739, 1715, 1689, 1666, 1645, 1598, 1563, 1518, 1432, 1209, 1151; 1H NMR (d6-DMSO) δ 9.24 (1H, s), 8.88 (1H, d, J=7.6), 8.18 (1H, d, J=7.7), 7.60 (3H, m), 7.26 (10H, m), 6.06 (1H, d, J=7.7), 5.23 (2H, ABq), 4.69 (3H, m), 3.93 (2H, s), 2.78 (6H, m). Anal. Calcd. for C35H31N3O8Cl2. H2O: C, 59.16; H, 4.68; N, 5.91. Found: C, 59.38; H, 4.53; N, 5.84. M.S. (+FAB); 694, (Cl=35, 37), (M++1); 692 (Cl=35, 35), (M++1).

Workup

  1. customThe solution was evaporated to dryness under reduced pressure
  2. dissolutionredissolved in dichloromethane
  3. concentrationconcentrated (x3)
  4. customThe residue was triturated with ethyl acetate
  5. additiondiluted with ether

Sources & evidence

ORD record
ord-f83145ee60f3499986af14393a811c9b
Source dataset
uspto-grants-2007_10
Patent number
US07288624B2

Reaction notes

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