ChemInform Abstract: Influence of the Quaternary Ammonium Salt on the Addition of α- Cyanocarbanions to Mesityl Oxide, Methyl Crotonate and Cinnamate, and Methyl Sorbate under Phase Transfer Catalysis.

ChemInform ◽  
2010 ◽  
Vol 27 (27) ◽  
pp. no-no
Author(s):  
M. C. ROUX-SCHMITT ◽  
D. CROISAT ◽  
J. SEYDEN-PENNE ◽  
L. WARTSKI ◽  
M. COSSENTINI
Keyword(s):  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Phase Transfer Catalysis ◽  
Phase Transfer ◽  
Mesityl Oxide ◽  
Methyl Sorbate

Novel coincidence effects in a bimetallic phase transfer catalyzed reaction. Biphasic reduction reactions catalyzed by rhodium carbonylmetallate clusters

1985 ◽  
Vol 63 (6) ◽  
pp. 1157-1160 ◽  
Author(s):  
Ferenc Joó ◽  
Howard Alper
Keyword(s):  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Phase Transfer ◽  
Nitro Compounds ◽  
Organic Substrate ◽  
Carbonyl Complexes ◽  
Cobalt Carbonyl ◽  
Reduction Reactions ◽  
Mild Conditions

Bimetallic and cluster rhodium carbonyl complexes catalyze the biphasic reduction of nitro compounds under mild conditions (using CO/5 M NaOH, C6H6 or PhCH3). Rate studies indicate the sensitivity of the reaction to the nature of the organic substrate, base concentration, and the temperature. A previously observed bimetallic (Co2(CO)8 and (1,5-HDRhCl)2) and phase transfer catalyzed [R4N+X−] reduction of nitro compounds was found to be a consequence of the inhibition and reactivation of the true catalyst by the quaternary ammonium salt and cobalt carbonyl, respectively.

scholarly journals Reactivity of Phenol Allylation Using Phase-Transfer Catalysis in Ion-Exchange Membrane Reactor

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Ho Shing Wu ◽  
Yeng Shing Fu
Keyword(s):  
Contact Angle ◽  
Ion Exchange ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Membrane Reactor ◽  
Phase Transfer Catalysis ◽  
Phase Transfer ◽  
Ion Exchange Membrane ◽  
Membrane Reactors ◽  
Exchange Membrane

This study investigates the reactivity of phenol allylation using quaternary ammonium salt as a phase-transfer catalyst in three types of membrane reactors. Optimum reactivity and turnover of phenol allylation were obtained using a respond surface methodology. The contact angle, water content, and degree of crosslinkage were measured to understand the microenvironment in the ion exchange membrane.

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