. 2017 Jul 25;22(8):1210. doi: 10.3390/molecules22081210
© 2017 by the authors.
Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Scheme 8.
Solid acid catalyst mediated synthesis.