Pon de relay: A convenient and efficient synthesis of alkene‐functionalized furansfromcyclopropenes, which proceeds through an isomerization/olefination cascade sequence under copper–palladium relaycatalysis, has been developed (see scheme).
Pon de relay:已经开发了一种方便有效的方法,从环丙烯中合成烯烃官能化的呋喃,该过程在铜-钯中继催化下通过异构化/烯化级联序列进行(参见方案)。
A modular synthesis of tetrasubstitutedfuran carboxylates using a tandem cycloisomerization/oxidative carbonylation sequence of cyclopropenes has been successfully developed. The Tandem Metal RelayCatalysis (TMRC) pathway accounted for the high efficiency of this transformation.
作者:Li, Xiangdong、Wodrich, Matthew D.、Waser, Jérôme
DOI:10.1038/s41557-024-01535-8
日期:——
cyclopropenyl-gold(III) species as equivalents of σ-type CPCs, which can then react with terminal alkynes and vinylboronic acids. With catalyst loadings as low as 2 mol%, the synthesis of highly functionalized alkynyl- or alkenyl-cyclopropenes proceeded under mild conditions. A class of hypervalent iodine reagents—the cyclopropenyl benziodoxoles (CpBXs)—enabled the direct oxidation of gold(I) to gold(III) with concomitant