Catalytic nucleophilic fluorination by an imidazolium ionic liquid possessing trialkylphosphine oxide functionality
作者:Minakshmi Paramanik、Rekha Singh、Sulekha Mukhopadhyay、Sunil K. Ghosh
DOI:10.1016/j.jfluchem.2015.06.022
日期:2015.10
The synthesis of a new alkylmethylimidazolium ionicliquid wherein the alkyl group is functionalized with dihexylphosphine oxide moiety at the terminal position has been achieved in four steps from 1-methylimidazole. This hybrid ionicliquid effectively catalyzed the nucleophilicfluorination of primary alkyl mesylates under mild conditions using CsF as the fluoride source with a faster rate compared
Arrangements of enantiopure and racemic ionic liquids at the liquid/air interface: the role of chirality on self-assembly and layering
作者:S. Caporali、C. Chiappe、T. Ghilardi、A. Iuliano、G. Longhi、P. Margari、C. S. Pomelli
DOI:10.1039/c5ra23553g
日期:——
Chiralionicliquids (CILs) have been obtained in high yield using commercial propylene oxide or natural alcohols (citronellol and nopol) as building blocks. The self-assembly ability at the interface IL/air for some couples of enantiopure and racemic CILs was explored by angle resolved XPS.
Convenient Continuous Flow Synthesis of <i>N</i>-Methyl Secondary Amines from Alkyl Mesylates and Epoxides
作者:Gary Mathieu、Heena Patel、Hélène Lebel
DOI:10.1021/acs.oprd.0c00193
日期:2020.10.16
process was developed to synthesize N-methyl secondary aminesfrom alkyl mesylates and epoxides via a nucleophilic substitution using aqueous methylamine. A variety of N-methyl secondary amines were produced in good to excellent yields, including a number of bioactivecompounds or their precursors. Up to 10.6 g (88% yield) of an N-methyl secondary amine was produced in 140 min process time. The amination
A reagent combination system, tetracyanoethylene-30% hydrogen peroxide, was found to epoxidize olefins efficiently in acetonitrile at room temperature in a stereospecific manner with retention of the configuration of the double bond.
Carbonylation of alkyl sulfonates catalyzed by cobalt complexes
作者:Hisao Urata、Daisuke Goto、Takamasa Fuchikami
DOI:10.1016/0040-4039(91)80697-5
日期:1991.6
Alkylsulfonates (R1-OSO2R2) react with carbon monoxide and alcohol (R3-OH) in the presence of catalytic amounts of Co complex and Nal to afford the corresponding esters (R1-COOR3) in moderate to good yields.