Fe-Catalyzed Domino Intramolecular Nucleophilic Substitution of 4-Hydroxychromen-2-one and Pyran-2-one/Ring Opening of Activated Arene: An Easy Access to 2,3-Disubstituted Furo[3,2,-<i>c</i>]coumarins and Furo[3,2,-<i>c</i>]pyran-4-ones via Nonsymmetric Triarylmethanes
作者:Wayland E. Noland、Honnaiah Vijay Kumar、Arjun Sharma、Binyuan Wei、Selamawit Girmachew
DOI:10.1021/acs.orglett.0c00123
日期:2020.3.6
A one-pot synthesis of functionalized 2,3-disubstituted furo[3,2,-c]coumarins and furo[3,2,-c]pyran-4-ones under hydrated ferric sulfate catalysis was performed. It was revealed that the reaction proceeds with intramolecular cyclofunctionalization of nonsymmetric triarylmethanes via ring opening of 2-methylfuran followed by recyclization, resulting in the selective formation of desired products. The
在水合硫酸铁催化下,一锅合成功能化的2,3-二取代的呋喃[3,2,-c ]香豆素和呋喃[3,2,-c ]吡喃-4-酮。揭示了该反应通过2-甲基呋喃的开环进行不对称三芳基甲烷的分子内环官能化,然后进行环化,从而选择性地形成所需产物。通过抗凝剂类似物和2,3-二取代苯并呋喃的简洁合成证明了该方法的多功能性。