应用化学
應用化學
응용화학
CHINESE JOURNAL OF APPLIED CHEMISTRY
2010年
3期
280-284
,共5页
氟两相催化%全氟辛基磺酰亚胺金属盐%全氟溶剂%Friedel-Crafts烷基化%稀土
氟兩相催化%全氟辛基磺酰亞胺金屬鹽%全氟溶劑%Friedel-Crafts烷基化%稀土
불량상최화%전불신기광선아알금속염%전불용제%Friedel-Crafts완기화%희토
fluorous biphasic catalysis%metal bis(perfluorooctanesulfonyl)imide complex%perfluorocarbon%Friedel-Crafts alkylation%rare earth(Ⅲ)
制备了全氟辛基磺酰亚胺盐(M[N(SO_2C_8F_(17))_2]_n,n:3,4),并用于催化氟两相烷基化反应.考察了催化剂种类、反应时间、反应温度和催化剂用量对烷基化反应的影响,同时探讨了Yb[N(SO_2C_8F_(17))_2]_3对烷基化试剂摩尔比为0.2%时,催化烷基化试剂与不同芳烃的反应,表明Yb[N(SO_2C_8F_(17))_2]_3是一种有效的烷基化催化剂.含有催化剂的氟相通过简单的相分离后,可回收利用.氟相重复使用5次,其催化活性降低不大.
製備瞭全氟辛基磺酰亞胺鹽(M[N(SO_2C_8F_(17))_2]_n,n:3,4),併用于催化氟兩相烷基化反應.攷察瞭催化劑種類、反應時間、反應溫度和催化劑用量對烷基化反應的影響,同時探討瞭Yb[N(SO_2C_8F_(17))_2]_3對烷基化試劑摩爾比為0.2%時,催化烷基化試劑與不同芳烴的反應,錶明Yb[N(SO_2C_8F_(17))_2]_3是一種有效的烷基化催化劑.含有催化劑的氟相通過簡單的相分離後,可迴收利用.氟相重複使用5次,其催化活性降低不大.
제비료전불신기광선아알염(M[N(SO_2C_8F_(17))_2]_n,n:3,4),병용우최화불량상완기화반응.고찰료최화제충류、반응시간、반응온도화최화제용량대완기화반응적영향,동시탐토료Yb[N(SO_2C_8F_(17))_2]_3대완기화시제마이비위0.2%시,최화완기화시제여불동방경적반응,표명Yb[N(SO_2C_8F_(17))_2]_3시일충유효적완기화최화제.함유최화제적불상통과간단적상분리후,가회수이용.불상중복사용5차,기최화활성강저불대.
The metal bis(perfluorooctanesulfonyl)imide complexes were prepared and used in Friedel-Crafts alkylation in fluorous biphasic system. The effects of Lewis acid catalysts,reaction time,temperature and dosage of catalysts,as well as the catalytic reaction of different alkylating agents with aromatic compounds in the presence of 0.2% molar fraction of Yb[N(SO_2C_8F_(17))_2]_3 were investigated. All the experimental results show that metal bis(perfluorooctanesulfonyl)imide complexes were more effective for Friedel-Crafts alkylation than conventional Lewis acid catalysts. Furthermore,by simple phase-separation,the fluorous phase containing only catalyst could be re-utilized up to four times with a slight decrease in activity.
