Reaction of azulenes with 1-trifluoromethanesulfonylpyridinium trifluoromethanesulfonate (TPT) and synthesis of the parent azulene
作者:Shunji Ito、Ryuji Yokoyama、Tetsuo Okujima、Tomomi Terazono、Takahiro Kubo、Akio Tajiri、Masataka Watanabe、Noboru Morita
DOI:10.1039/b212484j
日期:——
the reaction of 2-hydroxyazulene with trifluoromethanesulfonic anhydride in the presence of triethylamine as a base. Under the use of pyridine, 1-trifluoromethanesulfonylpyridinium trifluoromethanesulfonate further reacted with 2-azulenyl trifluoromethanesulfonate to give 1-(1-trifluoromethanesulfonyl-1,4-dihydropyridin-4-yl)azulenyl trifluoromethanesulfonate. Moreover, we found that azulenes also
在三乙胺作为碱的存在下,通过2-羟基az烯与三氟甲磺酸酐的反应制备2-氮杂烯丙基三氟甲磺酸酯。在吡啶的使用下,三氟甲磺酸的1-三氟甲磺酰基吡啶鎓与2-氮杂烯基的三氟甲磺酸酯进一步反应,得到1-(1-三氟甲磺酰基-1,4-二氢吡啶基-4-基)氮杂烯丙基三氟甲磺酸酯。此外,我们发现天青石还与1-三氟甲磺酰基吡啶鎓三氟甲磺酸盐反应生成了4-(1-氮杂烯基)-1,4-二氢吡啶衍生物和6-(1-氮杂烯基)-1-三氟甲磺酰基-1-氮杂-六-1 3,5-三烯取决于反应条件。