So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Wu, Zijun; Wang, Jian researched the compound: (11bR)-2,6-Bis(3,5-dimethylphenyl)-4-hydroxydinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepine 4-oxide( cas:861909-53-7 ).Name: (11bR)-2,6-Bis(3,5-dimethylphenyl)-4-hydroxydinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepine 4-oxide.They published the article 《Enantioselective Medium-Ring Lactone Synthesis through an NHC-Catalyzed Intramolecular Desymmetrization of Prochiral 1,3-Diols》 about this compound( cas:861909-53-7 ) in ACS Catalysis. Keywords: enantioselective cyclization intramol desymmetrization prochiral diol heterocyclic carbene catalyst; lactone preparation. We’ll tell you more about this compound (cas:861909-53-7).
A highly enantioselective intramol. annulation reaction of 1,3-diols catalyzed by a triazolium N-heterocyclic carbene (NHC) precatalyst is disclosed, affording the corresponding medium-sized lactones in moderate to good yields with high enantioselectivities. It is worth noting that this compatible catalytic system was successfully applied to assemble a broad range of chiral medium-sized lactones, including ones with eight-, nine-, ten-, eleven-, and twelve-membered rings.
There are many compounds similar to this compound(861909-53-7)Name: (11bR)-2,6-Bis(3,5-dimethylphenyl)-4-hydroxydinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepine 4-oxide. if you want to know more, you can check out my other articles. I hope it will help you，maybe you’ll find some useful information.
Reference:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics