Acetic Acid → HCID 178463257, compound

HRID 908045Notes

Reaction equation

HRID 908045 reaction equation
[NH2:1][C:2]1[CH:10]=[CH:9][CH:8]=[C:7]2[C:3]=1[CH2:4][O:5][C:6]2=[O:11].[F:12][C:13]1[CH:18]=[CH:17][C:16]([C:19](=O)[CH3:20])=[CH:15][CH:14]=1.S([O-])([O-])(=O)=O.[Mg+2].C(O)(=O)C>C1(C)C=CC=CC=1>[F:12][C:13]1[CH:18]=[CH:17][C:16](/[C:19](=[N:1]/[C:2]2[CH:10]=[CH:9][CH:8]=[C:7]3[C:3]=2[CH2:4][O:5][C:6]3=[O:11])/[CH3:20])=[CH:15][CH:14]=1

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 98284'-FluoroacetophenoneHCID 24083Sulfuric acid magnesium salt (1:1)HCID 122846494-Amino-1,3-dihydro-2-benzofuran-1-one

Product 1

HCID 178463257HCID 178463257, compoundYield 88%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Conditions

Temperature
120 °C

Procedure

To a solution of 4-aminoisobenzofuran-1(3H)-one (1 g, 6.7 mmol) and 1-(4-fluorophenyl)ethanone (1.4 g, 10.1 mmol) in toluene (35 mL) was added anhydrous magnesium sulfate (8.8 g, 73.7 mmol) and acetic acid (0.2 mL) at room temperature under N2. The reaction mixture was then stirred at 120° C. for 36 hr. The reaction mixture was cooled to 90° C. and filtered. After filter cake was washed with acetonitrile, the filtrates were combined and evaporated to dryness to obtain yellow solid, which was washed by petroleum ether to obtain the title compound as a white solid (1.58 g, yield 88%). LC-MS (ESI) m/z: 270(M+1)+H-NMR (400 MHz, CDCl3) δ (ppm): 2.30 (s, 3H), 5.16 (s, 2H), 7.00-7.02 (d, J=7.6 Hz, 1H), 7.13-7.18 (m, 2H), 7.51-7.56 (t, J=7.6 Hz, 1H), 7.66-7.69 (d, J=7.6 Hz, 1H), 7.99-8.03 (m, 2H).

Workup

  1. temperatureThe reaction mixture was cooled to 90° C.
  2. filtrationfiltered
  3. filtrationAfter filter cake
  4. washwas washed with acetonitrile
  5. customevaporated to dryness
  6. customto obtain yellow solid, which
  7. washwas washed by petroleum ether

Sources & evidence

ORD record
ord-510ff8c5ca92473eb17414869a4f2d9c
Source dataset
uspto-grants-2011_09
Patent number
US08012976B2

Reaction notes

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