Diisopropylethylamine → HCID 57791859, compound

HRID 1091785Notes

Reaction equation

HRID 1091785 reaction equation
[Cl:1][C:2]1[CH:3]=[CH:4][CH:5]=[C:6]2[C:11]=1[C:10]([CH2:12][C:13]1[CH:14]=[CH:15][C:16]([F:22])=[C:17]([CH:21]=1)[C:18]([OH:20])=O)=[N:9][NH:8][C:7]2=[O:23].[CH2:24]([O:26][CH:27]1[CH2:32][CH2:31][NH:30][CH2:29][CH2:28]1)[CH3:25].CCN(C(C)C)C(C)C>CN(C=O)C>[Cl:1][C:2]1[CH:3]=[CH:4][CH:5]=[C:6]2[C:11]=1[C:10]([CH2:12][C:13]1[CH:14]=[CH:15][C:16]([F:22])=[C:17]([C:18]([N:30]3[CH2:31][CH2:32][CH:27]([O:26][CH2:24][CH3:25])[CH2:28][CH2:29]3)=[O:20])[CH:21]=1)=[N:9][NH:8][C:7]2=[O:23]

Participants

5

Reactant 3

HCID 81531DiisopropylethylamineHCID 115065194-EthoxypiperidineHCID 57791854HCID 57791854, compound

Product 1

HCID 57791859HCID 57791859, compoundYield 19.5%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

5-((8-chloro-4-oxo-3,4-dihydrophthalazin-1-yl)methyl)-2-fluorobenzoic acid (103) (0.2 g, 0.60 mmol), 4-ethoxypiperidine (0.078 g, 0.60 mmol) and 2-(1H-benzo[d][1,2,3]triazol-1-yl)-1,1,3,3-tetramethylisouronium tetrafluoroborate (0.251 g, 0.78 mmol) were dissolved in DMF (10 mL), to this was added DIPEA (0.136 mL, 0.78 mmol) and the reaction was stirred for 1 hour. The solvent was evaporated to dryness and the gum was dissolved in acetonitrile (4 mL) and purified by preparative HPLC (Waters XBridge Prep C18 OBD column, 5μ silica, 19 mm diameter, 100 mm length), using decreasingly polar mixtures of water (containing 1% NH3) and MeCN as eluents. Fractions containing the desired compound were evaporated to dryness to afford the desired compound as a white foam (0.052 g, 19.49%); 1H NMR (400.132 MHz, CDCl3) δ 1.20 (3H, t), 1.59-1.48 (1H, m), 1.81-1.63 (2H, m), 1.94-1.89 (1H, m), 3.16-3.07 (1H, m), 3.57-3.45 (4H, m), 4.09-4.00 (1H, m), 4.65 (2H, s), 6.99 (1H, t), 7.17-7.13 (2H, m), 7.26 (1H, s), 7.66 (1H, t), 7.80 (1H, dd), 8.49 (1H, dd); NH missing; m/z (LC-MS, ESI+), RT=2.08 (M+H 444).

Workup

  1. customThe solvent was evaporated to dryness
  2. dissolutionthe gum was dissolved in acetonitrile (4 mL)
  3. custompurified by preparative HPLC (Waters XBridge Prep C18 OBD column, 5μ silica, 19 mm diameter, 100 mm length)
  4. additionFractions containing the desired compound
  5. customwere evaporated to dryness

Sources & evidence

ORD record
ord-3ad288bdc71a4c65aeaa4931dd53ee57
Source dataset
uspto-grants-2012_03
Patent number
US08129380B2

Reaction notes

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