Issue 20, 2013
From the journal:

RSC Advances

Efficient microwave-assisted preparation of squaric acid monoamides in water†

Carlos López,a   Manuel Vega,a   Elena Sanna,a   Carmen Rotgera  and  Antoni Costa*a  

* Corresponding authors

a Departament de Química, Universitat de les Illes Balears, Ctra. Valldemossa km 7.5, Palma de Mallorca 07122, Spain
E-mail: antoni.costa@uib.es
Fax: 0034 971 173426
Tel: 0034 971 173266

Abstract

Squaric acid monoamides (SQAMs) were prepared via microwave-enhanced direct reaction of amines with squaric acid in yields ranging from 41 to 92%. These compounds are strong acids, with pKa values ranging from 0.9 to 2.0 as determined by spectrophotometric titration in representative cases.

Graphical abstract: Efficient microwave-assisted preparation of squaric acid monoamides in water

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Article information

DOI
https://doi.org/10.1039/C3RA41369A
Article type
Communication
Submitted
14 Dec 2012
Accepted
22 Mar 2013
First published
11 Apr 2013

RSC Adv., 2013,3, 7249-7253

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Efficient microwave-assisted preparation of squaric acid monoamides in water

C. López, M. Vega, E. Sanna, C. Rotger and A. Costa, RSC Adv., 2013, 3, 7249 DOI: 10.1039/C3RA41369A

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