反应详情

0.2 g of 2-[4,5-bis-(p-methoxyphenyl)-thiazol-2-ylthio]acetaldehyde are dissolved in 50 ml of toluene. While stirring vigorously, 1 ml of ethylene glycol and then 0.2 g of p-toluenesulphonic acid are added. The mixture is heated for 40 hours in a water separator, cooled to 20°, filtered with suction, crystallised from hexane/benzene and dried under reduced pressure to constant weight. 2-[4,5-bis-(p-methoxyphenyl)-thiazol-2-ylthio]acetaldehyde-ethyleneacetal is obtained in the form of a viscous oil.

1. temperaturecooled to 20°
2. filtrationfiltered with suction
3. customcrystallised from hexane/benzene
4. customdried under reduced pressure to constant weight