关键词: 酰胺, 相转移催化, 环化, 阳离子交换树脂, 卤代烃, &beta, 内酰胺

Stirring amides I (R = H, 4-Me, 4-MeO, 4-Cl, 4-Br, 3-Me, 4-iodo) with 50% NaOH and type 717 anion exchange resin in CH2Cl2 at room temperature for 90 h gave 37-90% b-lactams II.

Key words: AMIDES, PHASE TRANSFER CATALYSIS, CYCLIZATION, CATION EXCHANGE RESINS, HALOHYDROCARBON, BETA LACTAM