Synthesis of furo[2,3-c]quinolinones via intramolecular C(3)–H arylation of furan core under Pd/NHC-catalysis
作者:Konstantin E. Shepelenko、Irina G. Gnatiuk、Mikhail E. Minyaev、Victor M. Chernyshev
DOI:10.1016/j.mencom.2024.02.012
日期:2024.3
An efficient procedure for the preparation of furo[2,3-]-quinolin-4(5)-ones from 2-furoic acid -(-bromoaryl)- amides selective intramolecular C(3)–H arylation of the furan nucleus involves the catalysis by a Pd/NHC system generated from Pd(OAc) and readily available IPr HCl proligand. A series of novel furo[2,3-]quinolin-4(5)-ones were prepared in 65–80% isolated yields.
从 2-糠酸-(-溴芳基)-酰胺制备呋喃[2,3-]-喹啉-4(5)-酮的有效方法是呋喃核的选择性分子内 C(3)-H 芳基化,涉及由 Pd(OAc) 和容易获得的 IPr HCl 前配体生成的 Pd/NHC 系统进行催化。制备了一系列新型呋喃[2,3-]喹啉-4(5)-酮,分离产率为 65-80%。