4-Fluoro-2-sulfanylbenzoic acid → HCID 22939588, compound
Reaction equation
[F:1][C:2]1[CH:3]=[C:4]([SH:11])[C:5](=[CH:9][CH:10]=1)[C:6]([OH:8])=O.[C:12]([C:14]1[CH:19]=[C:18]([CH2:20][CH2:21][C:22]([O:24][C:25]([CH3:28])([CH3:27])[CH3:26])=[O:23])[CH:17]=[CH:16][N:15]=1)#[N:13]>N1C=CC=CC=1>[F:1][C:2]1[CH:10]=[CH:9][C:5]2[C:6](=[O:8])[N:13]=[C:12]([C:14]3[CH:19]=[C:18]([CH2:20][CH2:21][C:22]([O:24][C:25]([CH3:28])([CH3:27])[CH3:26])=[O:23])[CH:17]=[CH:16][N:15]=3)[S:11][C:4]=2[CH:3]=1Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
4-Fluorothiosalicylic acid (1.9 g, 11.3 mmol) and tert-butyl 3-(2-cyano-4-pyridyl)propanoate (1.3 g, 5.6 mmol) were dissolved in pyridine (20 ml), and the mixture was refluxed for 18 hrs. The solvent was evaporated, and the residue was subjected to a silica gel column chromatography. The fractions eluted with hexane-ethyl acetate (2:1, v/v) were collected, concentrated and recrystallized from hexane-tetrahydrofuran to give the titled compound (1.2 g, 54%) as white crystals.