. 2023 Feb 2;15(2):498. doi: 10.3390/pharmaceutics15020498
© 2023 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 (https://creativecommons.org/licenses/by/4.0/).
Scheme 2.
Synthesis of hydrazonyl chlorides 4a–4g.