Palladium-catalyzed cross-coupling reaction of iodobenzene and its 4-substituted derivatives, except for 4-nitroiodobenzene, with (Z)-1-ethoxy-2-(tributylstannyl)ethene under a carbon monoxide atmosphere (5 atm) gave the corresponding (E)-3-ethoxy-1-arylprop-2-en-1-ones in considerable yields. Syntheses of chromone and 4(1H)-quinolinone were accomplished by application of this method to 2-(methoxymethoxy)iodobenzene and ethyl 2-iodophenylcarbanylate, respectively. The results obtained on the carbonylative coupling reaction of halopyridines are also described.
在碳氢化合物氛围(5个大气压)下,使用
钯催化的偶联反应将
碘苯及其4-取代衍
生物(不包括
4-硝基碘苯)与(Z)-1-乙氧基-2-(三
丁基锡)
乙烯反应,得到了相应的(E)-3-乙氧基-1-芳基丙-2-烯-1-酮,产率相当可观。通过将该方法应用于2-(美克
锡基)
碘苯和乙基2-
碘苯基
羧酸酯,分别合成了
香豆素和4(1H)-
喹啉酮。此外,还描述了卤
吡啶的碳酰化耦合反应的结果。