Sedaghat S, Zein A. An Active Catalyst for Diels-Alder Reaction of Indol with o-Benzoquinone. ajc [Internet]. 2017 Jan. 31 [cited 2024 Nov. 25];29(4):908-10. Available from: https://asianpubs.org/index.php/ajchem/article/view/29_4_43