An efficient synthesis of 2-vinylbenzimidazoles from 1-(2-(benzimidazol-2-ylethyl)pyridinium salts using an anion-exchange resin

1991 ◽  
Vol 56 (23) ◽  
pp. 6516-6521 ◽  
Author(s):  
Ermitas Alcalde ◽  
Lluisa Perez-Garcia ◽  
Immaculada Dinares ◽  
Jordi Frigola
Keyword(s):  
Anion Exchange ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Pyridinium Salts ◽  
Efficient Synthesis

ChemInform Abstract: An Efficient Synthesis of 2-Vinylbenzimidazoles from 1-(2-Benzimidazol- 2-ylethyl)pyridinium Salts Using an Anion-Exchange Resin.

ChemInform ◽  
2010 ◽  
Vol 23 (13) ◽  
pp. no-no
Author(s):  
E. ALCALDE ◽  
L. PEREZ-GARCIA ◽  
I. DINARES ◽  
J. FRIGOLA
Keyword(s):  
Anion Exchange ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Pyridinium Salts ◽  
Efficient Synthesis

ChemInform Abstract: FACILE AND EFFICIENT SYNTHESIS OF ALKYL THIOTOSYLATES USING ANION EXCHANGE RESIN

1983 ◽  
Vol 14 (36) ◽  
Author(s):  
S. TAKANO ◽  
K. HIROYA ◽  
K. OGASAWARA
Keyword(s):  
Anion Exchange ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Efficient Synthesis

FACILE AND EFFICIENT SYNTHESIS OF ALKYL THIOTOSYLATES USING ANION EXCHANGE RESIN

1983 ◽  
Vol 12 (2) ◽  
pp. 255-256 ◽  
Author(s):  
Seiichi Takano ◽  
Kou Hiroya ◽  
Kunio Ogasawara
Keyword(s):  
Anion Exchange ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Efficient Synthesis

Syntheses and Characterization of N-(Indolyl)pyridinium Salts and of Their Ylides

2014 ◽  
Vol 69 (5) ◽  
pp. 605-614 ◽  
Author(s):  
Nazar Pidlypnyi ◽  
Sandra Kaul ◽  
Sebastian Wolf ◽  
Martin H. H. Drafz ◽  
Andreas Schmidt
Keyword(s):  
Anion Exchange ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Pyridinium Salts ◽  
Ring Transformation ◽  
Pyrylium Salts

3-Methylindole reacts with pyridines in the presence of NBS to give indol-2-yl-pyridinium salts which were converted into their ylides by an anion exchange resin in its hydroxide form. Indol-3- amine was subjected to a nucleophilic ring transformation with pyrylium salts which resulted in the formation of indol-3-yl-pyridinium salts, the 2,4,6-trimethylpyridinium derivative of which proved to be unstable. The 2,4,6-triphenylpyridinium derivate was deprotonated to the corresponding ylide. The isomeric indol-2-yl and indol-3-yl derivatives are cycloimmonium ylides which are members of the compound class of heterocyclic mesomeric betaines (MB). By contrast, the ylide of indol- 2-yl-pyrrolidinium is a cycloammonium ylide. It was prepared by reaction of 3-methylindole with pyrrolidine in the presence of NBS, followed by deprotonation.

Importance of anion exchange resin as supported catalyst

1994 ◽  
Vol 91 ◽  
pp. 63-74 ◽  
Author(s):  
MY El-Sheikh
Keyword(s):  
Anion Exchange ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Supported Catalyst

PEMODELAN MATEMATIS ADSORPSI CO2 DENGAN STRONG BASE ANION EXCHANGE RESIN SEBAGAI ADSORBEN UNTUK PURIFIKASI BIOGAS

2015 ◽  
Vol 5 (1) ◽  
pp. 11
Author(s):  
Anies Mutiari ◽  
Wiratni Wiratni ◽  
Aswati Mindaryani
Keyword(s):  
Anion Exchange ◽  
Pilot Plant ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Scale Up ◽  
Sum Of Squares ◽  
Strong Base ◽  
Model Transfer ◽  
Plant Parameter

Pemurnian biogas telah banyak dilakukan untuk menghilangkan kadar CO2  dan meningkatkan kandungan CH4  yang terkandung di dalamnya. Kandungan CH4 yang tinggi akan memberikan unjuk kerja yang lebih baik. Model  matematis proses adsorpsi CO2 disusun berdasarkan teori lapisan film antar fasa, dimana pada proses yang ditinjau terdapat tiga fase yaitu gas, cair dan padat. Model matematis dari data eksperimental   kecepatan dan kesetimbangan proses adsorpsi CO2 melalui mekanisme pertukaran ion di suatu kolom adsorpsi telah dibuat. Model ini dibuat untuk mencari konstanta yang dapat dipergunakan pada proses scale up data laboratorium ke skala pilot plant. Parameter proses kecepatan yang dicari nilainya adalah koefisien transfer massa massa volumetris CO2 pada fase cair (kLa), koefisien transfer massa volumetris CO2 pada fasegas (kGa) dan tetapan laju reaksi (k1 dan k2). Pada hasil penelitian ini ditunjukkan bahwa nilai parameter yang diperoleh sesuai hasil fitting data dengan model matematis yang digunakan, yaitu model transfer massa pada lapisan film antar fase secara seri: adalah kGa, kla, k1 dan k2  dengan nilai Sum of Squares Error (SSE) rata-rata 0,0431. Perbandingan nilai kGa hasil simulasi dan teoritisnya memberikan kesalahan rata-rata 18,79%. Perbandingan nilai kLa hasil simulasi dan teoritis memberikan kesalahan rata-rata 7,92%.Kata kunci: model matematis, adsorpsi CO2, pemurnian biogas

Plutonium Loading onto Reillex HPQ Anion Exchange Resin

2001 ◽  
Author(s):  
E A Kyser
Keyword(s):  
Anion Exchange ◽  
Exchange Resin ◽  
Anion Exchange Resin

Analysis of Permanganate-Digested Reillex(TM) HPQ Anion Exchange Resin

2001 ◽  
Author(s):  
W.J. III Crooks
Keyword(s):  
Anion Exchange ◽  
Exchange Resin ◽  
Anion Exchange Resin

Catalysis of the Photodecomposition of Chloroform by a Polystyrene Anion Exchange Resin

2013 ◽  
Vol 2 (2) ◽  
pp. 79-87 ◽  
Author(s):  
Laura A. Pena ◽  
Alissa M. Chan ◽  
Larissa R. Cohen ◽  
Karen Hou ◽  
Brent M. Harvey ◽  
...  
Keyword(s):  
Anion Exchange ◽  
Exchange Resin ◽  
Anion Exchange Resin
Sign in / Sign up

Export Citation Format

Share Document