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%。