structural feature of many natural products. By using a domino reaction of aromatic amines and cyclic enol ethers or 2-hydroxy cyclic ether catalyzed by indium chloride in water, various tetrahydroquinoline derivatives were synthesized efficiently. Most cyclization products showed cis selectivity. The use of 2,3-dihydrofuran as the cyclic enol ether provided both higher reactivity and cis selectivity than
四氢喹啉部分是许多
天然产物的结构特征。通过在
水中用
氯化铟催化芳香胺与环状烯醇醚或2-羟基环状醚的多米诺反应,可以有效地合成各种
四氢喹啉衍
生物。大多数环化产物显示出顺式选择性。与使用
3,4-二氢-2H-吡喃相比,使用
2,3-二氢呋喃作为环状烯醇醚提供更高的反应性和顺式选择性。由于控制
水中的螯合作用,使顺式选择性暂定合理。