The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Catalytic Asymmetric Hydrogenation of Tetrasubstituted Unsaturated Lactams: An Efficient Approach to Enantioenriched 3,4-Disubstituted Piperidines》. Authors are Yin, Congcong; Pan, Yingmin; Zhang, Xumu; Yin, Qin.The article about the compound:Bis(norbornadiene)rhodium (I) tetrafluoroboratecas:36620-11-8,SMILESS:[F-][B+3]([F-])([F-])[F-].C12=C3[Rh+]14567(C8=C5C9C6=C7C8C9)C%10=C4C2CC3%10).Recommanded Product: Bis(norbornadiene)rhodium (I) tetrafluoroborate. Through the article, more information about this compound (cas:36620-11-8) is conveyed.
An unprecedented Rh-catalyzed enantioselective and diastereoselective hydrogenation of easily accessed α,β-disubstituted unsaturated lactams I (R = Ph, Me, cyclohexyl, thiophen-2-yl, etc.; R1 = Me, ethyl; X = 4-methoxyphenyl, benzyl, methyl) to afford synthetically valuable chiral lactams II with 1,2-consecutive stereocenters was reported. The reaction could be performed on gram scale and the products could be concisely transformed to enantiomerically pure trans-3,4-disubstitituted piperidines [such as (+)-femoxetin, (-)-paroxetine] which are prevalent structural units existed in medicinal agents.
If you want to learn more about this compound(Bis(norbornadiene)rhodium (I) tetrafluoroborate)Recommanded Product: Bis(norbornadiene)rhodium (I) tetrafluoroborate, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(36620-11-8).
Reference:
Quinuclidine – Wikipedia,
Quinuclidine | C7H13N | ChemSpider