Fluorinations with complex metal fluorides Part 8. Ring rearrangement in the fluorinations of quinoline with caesium tetrafluorocobaltate and with cobalt(III) fluoride
作者:Raymond G. Plevey、Richard W. Rendell、John Colin Tatlow
DOI:10.1016/s0022-1139(00)81454-2
日期:1982.12
similarly, but the only new product isolated was tridecafluoro-3-azabicyclo[4,4,0]deca- 1(6)-2-diene (R). The rearrangement occurring with quinoline prompted a re-examination of its fluorination by cobalt(III) fluoride. At ca. 350°, compound F was the major product, with very little E: there were some ring-opened materials, the most important being tetradecafluoro-4-pentafluoroethyl- 2-azaoct-2(Z)-ene (N)
四氟钴酸铯在约350°时对喹啉进行氟化,主要得到五氟-2-氮杂双环[4,4,0] dec-1(2)-烯(E)和七氟-1-杂氮杂双[5,3]的混合物,0]由骨架重排产生的癸烷(F)。次要产物为六个多氟环己[b]-吡啶(GL),所有碳环均具有-(CF 2)4-部分。化合物F无反应性,但E对亲核试剂(例如水和甲醇)高度敏感。异喹啉类似地被氟化,但是分离出的唯一新产物是十三氟-3-氮杂双环[4,4,0]十-1(6)-2-二烯(R)。喹啉发生重排促使氟化钴(III)重新检查了其氟化程度。在约350°时,化合物F是主要产物,而E却很少:有一些开环的材料,最重要的是十四氟-4-五氟乙基-2-氮杂辛2(Z)-烯(N)。