carbonates through the cycloaddition of CO2 to epoxides in the absence of co-catalyst and solvent. Propyleneoxide conversion was near completion at 130 °C and 2.5 MPa in 2 h when [TMGC2H4NH2]Br was used as catalyst. The effects of functional groups and counter anions on catalytic performance were investigated. The synergistic effect of polarization by hydrogen bonding and the nucleophilic attack by bromide
通过一种简单的方法制备了一系列同时含有路易斯酸和碱性位点的功能性胍基离子液体(FGBIL),并用作在不存在co的情况下通过将CO 2环化成环氧化物来合成环状碳酸酯的催化剂-催化剂和溶剂。当[TMGC 2 H 4 NH 2] Br用作催化剂。研究了官能团和抗衡阴离子对催化性能的影响。氢键极化和溴化物阴离子的亲核攻击的协同作用解释了环氧化物的容易开环。此外,该方案适用于各种末端环氧化物,可以高产率和选择性地生产相应的环状碳酸酯。设想使用单一催化剂的无金属和无溶剂方法具有大规模固定CO 2的潜力。
PRODUCTION PROCESS FOR FLUOROSULFONYLIMIDE AMMONIUM SALT
申请人:Tsubokura Shiro
公开号:US20130331609A1
公开(公告)日:2013-12-12
A compound [II] such as ammonium N,N-di(fluorosulfonyl)imide is obtained by reacting a compound [I] such as N,N-di(chlorosulfonyl)imide and NH
4
F (HF)
p
. A compound [IV] such as an N,N-di(fluorosulfonyl)imide alkali metal salt is obtained by reacting the obtained compound [II] and an alkali metal compound or the like.
Synthesis, magnetism, aqueous-two phase formation and physical properties of novel guanidinium-based magnetic ionic liquids
作者:Tian Yao、Shun Yao、Dan Tang、Long Jing、Daocai Wang、Hang Song
DOI:10.1039/c6ra09879g
日期:——
Magneticionicliquids (MILs) are a new class of ionicliquids that reveal paramagnetic properties. In this study, a series of novel guanidinium-based organic magneticionicliquids were synthesized and characterized by FT-IR and ESI-MS. The magnetic properties of these MILs were investigated using a vibrating sample magnetometer. With decreasing length of the carbon chain of the MILs, magnetic susceptibility
PROCESS FOR THE PREPARATION OF ONIUM SALTS WITH ALKYL- OR ARYLSULFONATE ANIONS OR ALKYL- OR ARYLCARBOXYLATE ANIONS HAVING A LOW HALIDE CONTENT
申请人:Ignatyev Nikolai (Mykola)
公开号:US20090253905A1
公开(公告)日:2009-10-08
The invention relates to a method for producing onium salts comprising alkyl anions or aryl sulfonate anions or alkyl carboxylate anions or acryl carboxylate anions by reacting an onium halide with an alkyl silyl ester or trialkyl silyl ester of an alkyl sulfonic acid or aryl sulfonic acid or an alkyl carboxylic acid or aryl carboxylic acid or the anhydrides thereof.