[CH3:1]/[C:2](=[CH:12]\[S:13][C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1)/[C:3]([NH:5][C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1)=O.S(Cl)(Cl)=O.CN(C=O)C>C1(C)C=CC=CC=1>[CH3:1][C:2](=[CH:12][S:13][C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1)[C:3]([S:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH3:19])=[N:5][C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1A suspension of 1.0 g (3.71 mmol) of (E)-2-methyl-N-phenyl-3-(phenylthio)-2-propenamide, 0.81 ml of thionyl chloride, and 10 mg of DMF in 10 ml of toluene was refluxed for 1 hour and then concentrated under vacuum. The residue was dissolved in 5 ml of DMF and cooled in ice bath. To a solution of 241 mg of n-hexylthiol in 5 ml of DMF was added 90 mg of sodium hydride (60% in oil) under ice cooling and stirred for 5 minutes. The mixture was added portionwise to the above-described DMF solution of the residue under ice cooling and then stirred at room temperature for 1 hour. The reaction mixture was poured into water and extracted with tert-butyl methyl ether (three times). The combined organic layer was washed sequentially with water and a saturated NaCl solution, dried over anhydrous MgSO4, and concentrated. The residue was purified by silica gel column chromatography (hexane/ethyl acetate=20/1) to obtain 82 mg of n-hexyl 2-methyl-N-phenyl-3-(phenylthio)-2-propenimidothioate (hereinafter referred to as the present compound 47) and 114 mg of n-hexyl 3-(hexylthio)-2-methyl-N-phenyl-2-propenimidothioate (hereinafter referred to as the present compound 48).
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