The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Syntheses based on organic derivatives of mercury. I. Reaction of mercurated ferrocenes with copper salts》. Authors are Nefedov, V. A.; Nefedova, M. N..The article about the compound:Bromoferrocenecas:1273-73-0,SMILESS:Br[C-]12[Fe+2]3456789([C-]%10C6=C7C8=C9%10)C1=C3C4=C25).Application of 1273-73-0. Through the article, more information about this compound (cas:1273-73-0) is conveyed.
Mercurated products of ferrocene were separated as follows; dilution of the reaction mixture with H2O gave ferrocenylmercuric acetate, m. 115-16°; treatment with KBr gave bromomercuriferrocene, decomposed at 184-6°, after extraction with (CH2Cl)2 and treatment of the extracted material with petroleum ether. Extraction of the crude products with Me2CO gave 1,3-bis(bromomercuri)ferrocene, a yellow powder. Chlormercuriferrocene heated in Me2CO with CuCl2.2H2O and H2O 10 min. gave 58% chloroferrocene, m. 58-9°, CuBr2 similarly gave 69% bromoferrocene, m. 32-3°. 1,1′-Bis(chloromercuri)ferrocene and CuCl2 similarly gave 17% 1,1′-dichloroferrocene, m. 75-7°, and 1-chloro-1′-chloromercuriferrocene, m. 141-3°, separated on Al2O3 by elution with C6H6 and heptane. Similarly prepared was 1,1′-dibromoferrocene, m. 50°. Bromomercuriferrocene and Cu(OAc)2 heated to 130° in vacuo 2 hrs. gave 2% acetoxyferrocene, m. 63-4°; similarly chloromercuriferrocene and Cu phthalimide gave 40% N-ferrocenylphthalimide m. 152-4°. Dibromoferrocene heated with PhOK in the presence of powd. Cu in xylene 40 min. gave 20% 1,1-diphenoxyferrocene, m. 90.5-91°; bromoferrocene similarly gave phenoxyferrocene, m. 87-8°. 1,1′-bis(chloromercuri)ferrocene and Cu(SCN)2 heated 6 hrs. in C6H6 gave 30% thiocyanoferrocene m. 97-8°, and 1,1′-dithiocyanoferrocene, m. 114-15°. The former and MeMgI gave 90% methylthioferrocene (I), n25D 1.6488; methiodide, m. 106-7°. Similarly prepared was 1,1′-bis(methylthio)ferrocene, a liquid. I oxidized with H2O2 gave the sulfone, m. 73-4°.
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Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com