. 2017 Mar 19;22(3):483. doi: 10.3390/molecules22030483
© 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 22.
Aza Diels-Alder reaction with 1-azadienes.