. 2018 Jun 26;23(7):1536. doi: 10.3390/molecules23071536
© 2018 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 1.
Synthesis of linear (WH)5 and cyclic [WH]5.