The Journal of organic chemistry

Intermolecular and intramolecular Diels-Alder cycloadditions of 3-ylidenepiperazine-2, 5-diones and 5-acyloxy-2 (1 h)-pyrazinones

S Jin, P Wessig, J Liebscher

文献索引：Jin, Shangde; Liebscher, Juergen Advanced Synthesis and Catalysis, 1998 , vol. 340, # 4 p. 390 - 392

被引用次数: 31

摘要

The 3-ylidenepiperazine-2, 5-diones 16 and 39 and 5-acyloxy-2 (1 H)-pyrazinones 17 can serve as starting materials for the Diels-Alder reactions of alkenes and alkynes to the piperazine ring, under acidic conditions or in the presence of acetyl chloride, to afford