Pyridine → HCID 67019617, compound

HRID 2180421Notes

Reaction equation

HRID 2180421 reaction equation
[NH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.N1C=CC=CC=1.[CH3:14][O:15][C:16](=[O:29])[CH:17]=[CH:18][C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][C:20]=1[S:25](Cl)(=[O:27])=[O:26]>ClCCl>[CH3:14][O:15][C:16](=[O:29])[CH:17]=[CH:18][C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][C:20]=1[S:25](=[O:26])(=[O:27])[NH:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

5

Reactant 3

HCID 1049PyridineHCID 6115AnilineHCID 73708739HCID 73708739, compound

Product 1

HCID 67019617HCID 67019617, compoundYield 60.5%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a mixture of aniline (0.33 g, 3.53 mmol) and pyridine (1 ml) a solution of 3-(2-chlorosulfonylphenyl)acrylic acid methyl ester (33) (0.45 g, 1.72 mmol) in dichloromethane (3 ml) was added and the resultant solution was stirred at 50° C. for 1 hour. The reaction mixture was evaporated and the residue was partitioned between ethyl acetate and 10% HCl. The organic layer was washed successively with water, saturated NaCl and dried (Na2SO4). The solvent was removed and the residue was chromatographed on silica gel with ethyl acetate-chloroform (1:7, v/v) as eluent. The obtained product was washed with diethyl ether to give the title compound (0.33 g, 60%). 1H NMR (CDCl3, HMDSO), δ: 3.86 (3H, s); 6.27 (1H, d, J=16.0 Hz); 6.69 (1H, br s); 6.87-7.67 (8H, m); 7.94-8.13 (1H, m); 8.49 (1H, d, J=16.0 Hz).

Workup

  1. additionwas added
  2. customThe reaction mixture was evaporated
  3. customthe residue was partitioned between ethyl acetate and 10% HCl
  4. washThe organic layer was washed successively with water, saturated NaCl
  5. dry with materialdried (Na2SO4)
  6. customThe solvent was removed
  7. customthe residue was chromatographed on silica gel with ethyl acetate-chloroform (1:7
  8. washThe obtained product was washed with diethyl ether

Sources & evidence

ORD record
ord-202f51f9c19e4ee8a7bb6a02ae8fdf13
Source dataset
uspto-grants-2005_05
Patent number
US06888027B2

Reaction notes

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