. 2021 May 22;26(11):3100. doi: 10.3390/molecules26113100
© 2021 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 11.
Reaction conditions: (a) Ph-Me, 110 °C, 24 h.