Synthesis of Benzofuropyridines and Dibenzofurans by a Metalation/Negishi Cross-Coupling/S<sub>N</sub>Ar Reaction Sequence
作者:Guy J. Clarkson、Stefan Roesner
DOI:10.1021/acs.joc.2c02111
日期:2023.1.6
methodology for the synthesis of benzofuropyridines and dibenzofurans from fluoropyridines or fluoroarenes and 2-bromophenyl acetates is reported. This streamlined one-pot procedure consists of a four-step directed ortho-lithiation, zincation, Negishi cross-coupling, and intramolecular nucleophilic aromatic substitution, allowing for the facile assembly of a diverse set of fused benzofuro heterocycles.
A method of killing or controlling insect, mite or nematode pests which method comprises applying to the pest or to the locus thereof an effective amount of a compound of formula (I):
wherein R is hydrogen or C1-4 alkyl; and X, Y and Z are independently selected from hydrogen, halogen, or OR¹ where R¹ is optionally substituted aryl or heteroaryl group.
Certain of the compounds of formula (I) are novel and these form a further aspect of the invention
一种杀灭或控制昆虫、螨虫或线虫害虫的方法,该方法包括向害虫或害虫所在地施用有效量的式(I)化合物:
其中 R 是氢或 C1-4 烷基;X、Y 和 Z 独立选自氢、卤素或 OR¹,其中 R¹ 是任选取代的芳基或杂芳基。
某些式(I)化合物是新颖的,它们构成了本发明的另一个方面