作者:Julia, Sebastian、Martinez-Martorell, Carlos、Elguero, Jose
DOI:——
日期:——
JULIA S.; MARTINEZ-MARTORELL C.; ELQUERO J., HETEROCYCLES, 24,(1986) N 8, 2233-2237
作者:JULIA S.、 MARTINEZ-MARTORELL C.、 ELQUERO J.
DOI:——
日期:——
Synthesis and Characterization of Pyrazolyl-Functionalized Imidazolium-Based Ionic Liquids and Hemilabile (Carbene)palladium(II) Complex Catalyzed Heck Reaction
作者:Ruihu Wang、Zhuo Zeng、Brendan Twamley、Melissa M. Piekarski、Jean'ne M. Shreeve
DOI:10.1002/ejoc.200600828
日期:2007.2
Neat reactions of 1-(pyrazolylmethyl)imidazole with an excess of alkyl or polyfluoroalkyl halides at 100 °C followed by subsequent metathetical reactions with LiN(SO2CF3)2 or KPF6 at 25 °C gave rise to a series of monoquaternary salts 3a–3k. These salts can be also prepared through treatment of 1-alkylimidazole with 1-(chloromethyl)pyrazole hydrochloride in the presence of base, followed by anion exchange