Diisopropylethylamine → methyl 8-(1-(3,5-difluorophenylamino)ethyl)-2-((S)-3-methylmorpholino)-4-oxo-4H-chromene-6-carboxylate

HRID 1947375Notes

Reaction equation

HRID 1947375 reaction equation
[CH3:1][C@H:2]1[CH2:7][O:6][CH2:5][CH2:4][NH:3]1.[F:8][C:9]1[CH:10]=[C:11]([NH:16][CH:17]([C:19]2[CH:20]=[C:21]([C:34]([O:36][CH3:37])=[O:35])[CH:22]=[C:23]3[C:28]=2[O:27][C:26](S(CC)=O)=[CH:25][C:24]3=[O:33])[CH3:18])[CH:12]=[C:13]([F:15])[CH:14]=1.C(N(C(C)C)C(C)C)C>C(#N)C>[F:8][C:9]1[CH:10]=[C:11]([NH:16][CH:17]([C:19]2[CH:20]=[C:21]([C:34]([O:36][CH3:37])=[O:35])[CH:22]=[C:23]3[C:28]=2[O:27][C:26]([N:3]2[CH2:4][CH2:5][O:6][CH2:7][C@@H:2]2[CH3:1])=[CH:25][C:24]3=[O:33])[CH3:18])[CH:12]=[C:13]([F:15])[CH:14]=1

Participants

5

Reactant 3

HCID 81531DiisopropylethylamineHCID 12012220(3S)-3-methylmorpholineHCID 58235048methyl 8-(1-(3,5-difluorophenylamino)ethyl)-2-(ethylsulfinyl)-4-oxo-4H-chromene-6-carboxylate

Product 1

HCID 58235042methyl 8-(1-(3,5-difluorophenylamino)ethyl)-2-((S)-3-methylmorpholino)-4-oxo-4H-chromene-6-carboxylateYield 34.4%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Conditions

Temperature
75 °C

Procedure

(S)-3-methylmorpholine (87 mg, 0.86 mmol) was added to a stirred solution of methyl 8-(1-(3,5-difluorophenylamino)ethyl)-2-(ethylsulfinyl)-4-oxo-4H-chromene-6-carboxylate (250 mg, 0.57 mmol) and N-ethyl-N-isopropylpropan-2-amine (0.150 mL, 0.86 mmol) in acetonitrile (3 mL) at RT. The resulting brown mixture was stirred at 75° C. for 7 hours. The reaction mixture was concentrated, diluted with DCM, washed with a 1M hydrochloric acid 1M, brine dried over magnesium sulfate and concentrated to afford the crude product which was purified by flash chromatography on silica gel eluting with 0 to 5% MeOH in DCM. The solvent was evaporated to dryness to afford methyl 8-(1-(3,5-difluorophenylamino)ethyl)-2-((S)-3-methylmorpholino)-4-oxo-4H-chromene-6-carboxylate (90 mg, 34%) as a yellow foam. Spectrum: [M−H]− 457.

Workup

  1. concentrationThe reaction mixture was concentrated
  2. additiondiluted with DCM
  3. washwashed with a 1M hydrochloric acid 1M, brine
  4. dry with materialdried over magnesium sulfate
  5. concentrationconcentrated
  6. customto afford the crude product which
  7. customwas purified by flash chromatography on silica gel eluting with 0 to 5% MeOH in DCM
  8. customThe solvent was evaporated to dryness

Sources & evidence

ORD record
ord-49cecbeeb4204cba9cfa0da086d33973
Source dataset
uspto-grants-2013_03
Patent number
US08399460B2

Reaction notes

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