1.
Abou-Hadeed K. Formation of Substituted Benzo[a]heptalenes via Bergman Cyclization of Vicinal Di(ethynyl)-heptalenes. Chimia [Internet]. 2000 Dec. 20 [cited 2024 Apr. 24];54(12):763. Available from: https://www.chimia.ch/chimia/article/view/2000_763