. 2019 Oct 21;24(20):3778. doi: 10.3390/molecules24203778
© 2019 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 12.
Synthesis of THF using [3 + 2] cycloaddition.