Issue 7, 2006
From the journal:

Green Chemistry

Mannich-type reactions in water using anionic water-soluble calixarenes as recoverable and reusable catalysts

Shoichi Shimizu,*a   Naoyuki Shimadaa  and  Yasuyuki Sasakia  

* Corresponding authors

a Department of Applied Molecular Chemistry and High Technology Research Center, College of Industrial Technology, Nihon University, Narashino, Chiba, Japan
E-mail: s5simizu@cit.nihon-u.ac.jp
Fax: +81 47 474 2579
Tel: +81 47 474 2568

Abstract

Mannich-type reactions in water can be carried out without the need for any added surfactants and organic solvents. The water-soluble calix[4]resorcinarene sulfonic acid, 2,8,14,20-tetramethyl-5,11,17,23-tetrakis(sulfomethyl)calix[4]resorcinarene, which functions as an efficient inverse phase-transfer catalyst, can be recovered as an aqueous solution and recycled after the simple extraction of the water-insoluble products.

Graphical abstract: Mannich-type reactions in water using anionic water-soluble calixarenes as recoverable and reusable catalysts

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Article information

DOI
https://doi.org/10.1039/B603962F
Article type
Paper
Submitted
17 Mar 2006
Accepted
22 May 2006
First published
12 Jun 2006

Green Chem., 2006,8, 608-614

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Mannich-type reactions in water using anionic water-soluble calixarenes as recoverable and reusable catalysts

S. Shimizu, N. Shimada and Y. Sasaki, Green Chem., 2006, 8, 608 DOI: 10.1039/B603962F

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