Synthesis of furo[3,2-c ]- and pyrano[ 3,2-c ] quinolines by lanthanide triflate catalyzed imino-Diels-Alder reaction

• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2000,（3）
• 页码范围: 377-383
• 页数: 7页
• 语种: 英文

摘要

Imino Diels-Alder reaction of imines witth 2,3-dihydrofuran or 3,4-dihydro-2H-pyran proceeded smothly in the presence of a catalytic amount (0.5 mol %) of ytterbium triflate to afford furo[3,2-c]- and pyrano[3,2-c] quinolines conveniently in high yield.