Acetic Acid → HCID 46869223, compound

HRID 2098181Notes

Reaction equation

HRID 2098181 reaction equation
C[N:2](C)/[C:3](/[CH3:26])=[CH:4]/[C:5]([C:7]1[S:8][CH:9]=[CH:10][C:11]=1[NH:12][C:13](=[O:25])[CH2:14][C:15]1[C:24]2[C:19](=[CH:20][CH:21]=[CH:22][CH:23]=2)[CH:18]=[CH:17][CH:16]=1)=O.O.[NH2:29]N.C(O)(=O)C>C(O)C>[CH3:26][C:3]1[NH:2][N:29]=[C:5]([C:7]2[S:8][CH:9]=[CH:10][C:11]=2[NH:12][C:13](=[O:25])[CH2:14][C:15]2[C:24]3[C:19](=[CH:20][CH:21]=[CH:22][CH:23]=3)[CH:18]=[CH:17][CH:16]=2)[CH:4]=1

Participants

5

Reactant 3

HCID 176Acetic AcidHCID 24654Hydrazine hydrate (1:1)HCID 68757576HCID 68757576, compound

Product 1

HCID 46869223HCID 46869223, compoundYield 16%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

To a solution of (E)-N-(2-(3-(dimethylamino)but-2-enoyl)thiophen-3-yl)-2-(naphthalen-1-yl)acetamide (139 mg, 0.37 mmol) in abs. ethanol (2 mL) was added hydrazine hydrate (1 mL, 62.91 mmol) and acetic acid (0.5 mL, 8.73 mmol). The reaction mixture was stirred at room temperature overnight under N2 (g) inlet and then concentrated under reduced pressure. The resulting residue was partitioned between ethyl acetate and H2O. The organic layer was dried (sodium sulfate), filtered and concentrated under reduced pressure. Purification by flash column chromatography (silica, 20:80 ethyl acetate/hexane) yielded N-(2-(5-methyl-1H-pyrazol-3-yl)thiophen-3-yl)-2-(naphthalen-1-yl)acetamide (20 mgs, 16%). Method [7] m/z 348.1 (M+Na); retention time=6.791. 1H-NMR (CDCl3) δ 10.28 (broad s, 1H), 8.07 (d, J=5.8 Hz, 2H), 7.91 (d, J=4.5 Hz, 2H), 7.53 (d, J=5.8 Hz, 2H), 7.53 (s, 1H), 7.50 (d, J=4.5 Hz, 2H), 7.08 (d, J=5.2 Hz, 1H), 5.88 (s, 1H), 4.23 (s, 2H), 2.19 (s, 3H).

Workup

  1. concentrationconcentrated under reduced pressure
  2. customThe resulting residue was partitioned between ethyl acetate and H2O
  3. dry with materialThe organic layer was dried (sodium sulfate)
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure
  6. customPurification by flash column chromatography (silica, 20:80 ethyl acetate/hexane)

Sources & evidence

ORD record
ord-39bdfcc0f27c42d883eada6c03b90158
Source dataset
uspto-grants-2013_05
Patent number
US08450363B2

Reaction notes

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