[S-:1][C:2]#[N:3].[NH4+].[C:5](Cl)(=[O:12])[C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1.[NH2:14][CH:15]1[CH2:23][C:22]2[C:17](=[CH:18][CH:19]=[CH:20][CH:21]=2)[CH2:16]1.O>CC(C)=O>[C:5]([NH:3][C:2]([NH:14][CH:15]1[CH2:23][C:22]2[C:17](=[CH:18][CH:19]=[CH:20][CH:21]=2)[CH2:16]1)=[S:1])(=[O:12])[C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1To a stirred solution of ammonium thiocyanate (0.837 g.) in acetone (5 ml.) was added benzoyl chloride (1.406 g.) in acetone (10 ml.). The mixture was refluxed for 5 minutes then 2-aminoindane (1.332 g.) in acetone (10 ml.) was added quickly. Refluxing was continued for 10 minutes and the mixture poured into water (75 ml.) to give an oil which solidified on standing. Recrystallisation from ethanol/water afforded the title compound as pale yellow needles (2.151 g.), m.p. 130°-5° C.
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