Studies on tertiary amine oxides. LXXXII. The reaction of 1-oxido-4(or 2)-pyridinediazonium tetrafluoroborate with olefins in the presence of palladium complex.
作者:SACHIKO KONDO、KAZUHISA FUNAKOSHI、SEITARO SAEKI、MASATOMO HAMANA
DOI:10.1248/cpb.34.7
日期:——
1-Oxido-4-pyridinediazonium tetrafluoroborate (4-PFB) reacts with olefins (cyclopentene, styrene, ethyl acrylate, indene, cyclohexene, cyclooctene, 1-octene and 1-dodecene) in the presence of tris(dibenzylideneacetone)dipalladium to afford the corresponding alkenylated products (1, 2, 3, 4, 5, 6, 7 and 8) in good yields.1, 2, 3, 5-Oxatriazolo[5, 4-α]pyridinium tetrafluoroborate (2-PFB) also reacts with cyclopentene and styrene to give 2-cyclopentenylpyridine 1-oxides (13 and 14) and (E)-2-(α-styryl)pyridine 1-oxide (15), respectively, in low yields.
1-氧代-4-吡啶二氮唑四氟硼酸盐(4-PFB)与烯烃(环戊烯、苯乙烯、丙烯酸乙酯、茚、环己烯、环辛烯、1-辛烯和 1-十二烯)在三(二亚苄基丙酮)二钯存在下发生反应,生成相应的烯化产物(1、2、3、4、5、6、7 和 8),收率良好、2,3,5-氧杂三唑并[5,4-α]吡啶鎓四氟硼酸盐(2-PFB)也能与环戊烯和苯乙烯反应,分别得到 2-环戊烯基吡啶 1-氧化物(13 和 14)和(E)-2-(α-苯乙烯基)吡啶 1-氧化物(15),产率较低。