2-Aminothiophenol → 2-(Benzo[d]thiazol-2-yl)-4-bromophenol
Reaction equation
[NH2:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][C:3]=1[SH:8].[Br:9][C:10]1[CH:17]=[C:14]([CH:15]=O)[C:13]([OH:18])=[CH:12][CH:11]=1>N1C=CC=CC=1>[OH:18][C:13]1[CH:12]=[CH:11][C:10]([Br:9])=[CH:17][C:14]=1[C:15]1[S:8][C:3]2[CH:4]=[CH:5][CH:6]=[CH:7][C:2]=2[N:1]=1Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
2-Aminothiophenol (12.5 g, 0.1 mole) was dissolved in 30 ml. of pyridine and 20.1 g (0.1 mole) of 5-bromosalicylaldehyde was added dropwise during 15 minutes. The solution was warmed on a steam bath for 2 hours and then a stream of air was bubbled through the mixture while heating for another hour. The mixture was poured into 300 ml. of 2 N HCl which was then stirred until crystals formed. The product was removed by filtration, washed with water and recrystallized from ethanol, mp. 164°-165°. Yield, 8.0 g. (26%).