反应详情

A mixture of 3.48 g of 2,3-epoxy-2,3-dihydro-1,4-naphthoquinone, 2.28 of 1-piperazinecarboxaldehyde and 200 ml of absolute ethanol was stirred for 20 hours, then concentrated to one-half its original volume and refrigerated overnight. The solid was collected and recrystallized from dichloromethane/ethanol, giving 2.65 g of the desired product, mp 200°-203° C.

1. concentrationconcentrated to one-half its original volume and refrigerated overnight
2. customThe solid was collected
3. customrecrystallized from dichloromethane/ethanol