反应详情

Triethylsilane (2.3 g) was added to 2 g of 5-butanoyl-2-oxindole in 20 ml of trifluoroacetic acid at room temperature and the solution stirred for 3 hours. The reaction was poured into ice water to give a red oil which solidified after standing. The solid was collected by vacuum filtration, washed with water and hexane and dried to give 1.7 g (91% yield) of 5-butyl-2-oxindole as an off-white solid.

1. customto give a red oil which
2. filtrationThe solid was collected by vacuum filtration
3. washwashed with water and hexane
4. customdried