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.Cai, Nengjian; Mi, Fen; Wu, Yanmei; Song, Hao; Liu, Xiao-Yu; Qin, Yong researched the compound: Bis(norbornadiene)rhodium (I) tetrafluoroborate( cas:36620-11-8 ).SDS of cas: 36620-11-8.They published the article 《Practical and efficient preparation of the chiral 4-bromotryptophan derivative by Rh-catalyzed hydrogenation》 about this compound( cas:36620-11-8 ) in Tetrahedron Letters. Keywords: bromotryptophan enantioselective preparation rhodium catalyzed asym hydrogenation bromoindole. We’ll tell you more about this compound (cas:36620-11-8).
An efficient three-step sequence has been developed for the preparation of a chiral 4-bromotryptophan derivative starting from the com. available 4-bromoindole. Key to the synthesis was the generation of the chiral center via a Rh-catalyzed asym. hydrogenation of a dehydrotryptophan precursor with 95% yield and >99% ee. Notably, the whole synthetic route required no column chromatog. operations and was readily conducted on large scales.
Compound(36620-11-8)SDS of cas: 36620-11-8 received a lot of attention, and I have introduced some compounds in other articles, similar to this compound(Bis(norbornadiene)rhodium (I) tetrafluoroborate), if you are interested, you can check out my other related articles.
Reference:
Quinuclidine – Wikipedia,
Quinuclidine | C7H13N | ChemSpider