Method for preparation of mononitrated aromatic compounds in ionic liquids.

Other publication type
(Patent)


Publication Details

Author(s): Schlenk S, Wasserscheid P, Rijksen C, Noti C, Hanselmann P
Publisher: Lonza Ltd., Switz. .
Publication year: 2012
Journal issue: WO2012156540A2
Pages range: 35pp.


Abstract


The invention discloses a method for prepn. of mononitrated arom. compds. in a liq.-liq. biphasic solvent system with aq. nitric acid as one phase and ionic liqs. (ILs) as the second phase, wherein the nitric acid is continuously exchanged during the reaction, or the water, that is generated during the reaction, is removed by addn. of NO2 and an oxidizing agent (oxygen or air) during the reaction. The ionic liq. is selected from the group consisting of nitrate, hydrogen sulfonate, methanesulfonate, 1,1,2,2,tetrafkuoroethanesulfonate and trifluoromethanesulfonate of N+R1R2R3R4 [R1 and R2 are identical or different and independently from each other C1-14-alkyl; R3 is C4-14-alkyl; R4 is C4-14-alkyl or C1-14-alkyl-SO3H; with the proviso, that the total no. of carbons in R1, R2, R3 and R4 is at least 16; and, with proviso, that if R1 and R2 are C1-2-alkyl then R3 and R4 are C10-14-alkyl] and P+R1R2R3R4. Thus, PhMe was nitrated with aq. HNO3 in Bu4N+NO3- to give 39% 2-, 3-, and 4-nitrotoluene (1:0.09:0.64). [on SciFinder(R)]



FAU Authors / FAU Editors

Schlenk, Stefan
Lehrstuhl für Chemische Reaktionstechnik
Wasserscheid, Peter Prof. Dr.
Lehrstuhl für Chemische Reaktionstechnik


External institutions with authors

Lonza Group AG


How to cite

APA:
Schlenk, S., Wasserscheid, P., Rijksen, C., Noti, C., & Hanselmann, P. (2012). Method for preparation of mononitrated aromatic compounds in ionic liquids. Lonza Ltd., Switz. ..

MLA:
Schlenk, Stefan, et al. Method for preparation of mononitrated aromatic compounds in ionic liquids. Lonza Ltd., Switz. ., 2012.

BibTeX: 

Last updated on 2018-07-08 at 04:59