937792-52-4Relevant academic research and scientific papers
Bismuth-catalyzed synthesis of anthracenes via cycloisomerization of o-alkynyldiarylmethane
Park, Jungmin,Choi, Hyuck,Lee, Deug-Chan,Lee, Kooyeon
, p. 7005 - 7007 (2015/11/27)
In this study, anthracenes were efficiently synthesized from o-alkynyldiarylmethane using a novel method that exploits the synergistic effect between Bi(OTf)3 as the catalyst, and trifluoroacetic acid (TFA). Through this reaction, we achieved the rapid and efficient synthesis of anthracenes bearing various functional groups under mild conditions.
Ruthenium-catalyzed cyclization of 2-alkyl-1-ethynylbenzenes via a 1,5-hydrogen shift of ruthenium-vinylidene intermediates
Odedra, Arjan,Datta, Swarup,Liu, Rai-Shung
, p. 3289 - 3292 (2008/02/03)
(Chemical Equation Presented) Catalytic cyclization of 2-alkyl-1- ethynylbenzene derivatives was implemented by TpRuPPh3(CH 3CN)2PF6 (10 mol %) in hot toluene (105 °C, 36-100 h) to form 1-substituted-1H-indene and 1-indanone products; such cyclizations proceeded more efficiently for substrates bearing electron-rich benzenes. We propose that the cyclization mechanism involves a 1,5-hydrogen shift of initial metal-vinylidene intermediate.
