18259-25-1Relevant academic research and scientific papers
MeOTf-catalyzed formal [4?+?2] annulations of styrene oxides with alkynes leading to polysubstituted naphthalenes through sequential electrophilic cyclization/ring expansion
Chen, Chao,Xi, Chanjuan,Zhang, Zeyu,Zou, Song
, (2021/12/30)
MeOTf-catalyzed formal [4 + 2] annulation of styrene oxides with alkynes to afford polysubstituted naphthalenes has been realized, which undergoes sequential electrophilic cyclization/ring expansion. A range of substrates were tolerated in the formation of naphthalene derivatives with high regioselectivity in satisfactory yields. The reaction could also be carried out on gram scale.
Palladium-catalyzed allenylation/intramolecular diels-alder reaction of furans with propargyl carboxylates for the synthesis of polycyclic compounds
Li, Yanzhong,Wang, Chengyu,Kong, Lingkai,Li, Yanli
supporting information, p. 3556 - 3560 (2014/06/23)
A highly efficient palladium-catalyzed cascade reaction of propargyl carboxylates bearing a furanyl group with organoborons was developed. This methodology offers rapid access to polycyclic Diels-Alder cycloadducts in good to high yields. The thus-formed oxygen-bridged products were further converted into anthracene derivatives in a chemoselective manner under mild conditions. Copyright
