反应详情

Trans 2-(3-azido-cyclopentyl)-5,6-dichloro-isoindole-1,3-dione (0.727 g, 2.24 mmol) and lindlar catalyt (0.36 g) was added to a mixture of ethanol and dichloromethane and placed under a hydrogen balloon overnight. The mixture was filtered and the solid rinsed with dichloromethane. The organic layers were concentrated in vacuo, dissolved in methanol and diluted with acetonitrile. The solid was removed by filtration and the filtrate purified by preparative TLC (dichloromethane/methanol/triethylamine). The solid and material from TLC was recrystallized from MeCN/MeOH to give trans 2-(3-amino-cyclopentyl)-5,6-dichloro-isoindole-1,3-dione as an off white solid (0.145 g, contains also trans 2-(3-amino-cyclopentyl)-5-chloro-isoindole-1,3-dione)

1. customballoon overnight
2. filtrationThe mixture was filtered
3. washthe solid rinsed with dichloromethane
4. concentrationThe organic layers were concentrated in vacuo
5. dissolutiondissolved in methanol
6. additiondiluted with acetonitrile
7. customThe solid was removed by filtration
8. customthe filtrate purified by preparative TLC (dichloromethane/methanol/triethylamine)
9. customThe solid and material from TLC was recrystallized from MeCN/MeOH