4176-45-8Relevant academic research and scientific papers
Synthesis of Helical Quinone Derivatives by Oxidative Coupling of Substituted 2-Hydroxybenzo[c]phenanthrenes
Shahabuddin, Mohammad,Akutsu, Akira,Kimura, Takao,Karikomi, Michinori
, p. 1547 - 1554 (2017/03/21)
A concise synthesis of novel substituted quinone derivatives from commercially available starting materials was developed. For this synthesis, classical photo-induced 6π-electrocyclization was utilized, followed by oxidative aromatization reaction, and su
Efficient Enantioselective Synthesis of Oxahelicenes Using Redox/Acid Cooperative Catalysts
Sako, Makoto,Takeuchi, Yoshiki,Tsujihara, Tetsuya,Kodera, Junpei,Kawano, Tomikazu,Takizawa, Shinobu,Sasai, Hiroaki
, p. 11481 - 11484 (2016/10/06)
An efficient and enantioselective synthesis of oxa[9]helicenes has been established via vanadium(V)-catalyzed oxidative coupling/intramolecular cyclization of polycyclic phenols. A newly developed vanadium complex cooperatively functions as both a redox and Lewis acid catalyst to promote the present sequential reaction and afford oxa[9]helicenes in good yields with up to 94% ee.
Continuous flow photocyclization of stilbenes-scalable synthesis of functionalized phenanthrenes and helicenes
Lefebvre, Quentin,Jentsch, Marc,Rueping, Magnus
supporting information, p. 1883 - 1890 (2013/10/22)
A continuous flow oxidative photocyclization of stilbene derivatives has been developed which allows the scalable synthesis of backbone functionalized phenanthrenes and helicenes of various sizes in good yields.
Palladium-catalyzed intramolecular C-H activation: A synthetic approach towards polycyclic aromatic hydrocarbons
Paul, Sunanda,Jana, Rathin,Ray, Jayanta K.
experimental part, p. 1463 - 1468 (2010/08/20)
A simple and convenient synthetic protocol for the construction of polycyclic aromatic hydrocarbons has been developed. A variety of phenanthrene, benzo[c]phenanthrene and chrysene derivatives was synthesized via Pd-catalyzed intramolecular C-H activation followed by acid-catalyzed water elimination.
Synthesis of derivatives of phenanthrene and helicene by improved procedures of photocyclization of stilbenes
Talele, Harish R.,Gohil, Monik J.,Bedekar, Ashutosh V.
experimental part, p. 1182 - 1186 (2009/12/25)
An improved method has been developed for photocyclization of stilbene to construct phenanthrenes and benzo[c]phenanthrenes. This reaction is promoted by iodine while tetrahydrofuran is used as an efficient and inexpensive scavenger of hydroiodic acid produced during the photocyclization sequence. In another process, cyclohexene is used as a reagent for dehydrogenation step in place of THFI2.
