The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Convenient synthesis of some halo ferrocenes》. Authors are Fish, R. W.; Rosenblum, M..The article about the compound:Bromoferrocenecas:1273-73-0,SMILESS:Br[C-]12[Fe+2]3456789([C-]%10C6=C7C8=C9%10)C1=C3C4=C25).COA of Formula: C10BrFe. Through the article, more information about this compound (cas:1273-73-0) is conveyed.
Chloromercuriferrocenes were transformed to halo ferrocenes by treatment with pos. halogen reagents in polar media. Thus, N-bromo-and N-iodosuccinimide afforded bromo-and iodoferrocene, resp. 1,1′-Dibromoferrocene (I) was similarly obtained from 1,1′-bis(chloromercuri)ferrocene. The direct conversion of ferrocene to I, without isolation of the intermediate chloromercuri derivative, was feasible.
From this literature《Convenient synthesis of some halo ferrocenes》,we know some information about this compound(1273-73-0)COA of Formula: C10BrFe, but this is not all information, there are many literatures related to this compound(1273-73-0).
Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com