The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Diferrocenylamine》. Authors are Nesmeyanov, A. N.; Sazonova, V. A.; Romanenko, V. I..The article about the compound:Bromoferrocenecas:1273-73-0,SMILESS:Br[C-]12[Fe+2]3456789([C-]%10C6=C7C8=C9%10)C1=C3C4=C25).Product Details of 1273-73-0. Through the article, more information about this compound (cas:1273-73-0) is conveyed.
N-Acetylferrocenylamine heated with excess EtONa 40 min. at 150° gave a red-brown Na derivative, which with bromoferrocene in the presence of CuBr 1 h. at 110-20° gave a mixture of ferrocene, diferrocenyl, azoferrocene, starting material, and some N-acetyldiferrocenylamine, m. 176° (heptane). This and LiAlH4 in Et2O 6 h. gave after an aqueous treatment 8.3% N-ethyldiferrocenylamine, m. 149-9.5°, and yellow (70%) diferrocenylamine, m. 152-3° (aqueous EtOH). This and Et3O+BF4- 5-10 min. at room temperature gave 56% ethyldiferrocenylamine, identical with the above. N-Benzoylferrocenylamine in THF added to LiAlH4 and refluxed 6 h. under N gave after an aqueous treatment 86% benzylferrocenylamine, m. 125°; benzoyl derivative m. 134.5-5.5°. The amine and Et3O+BF4- in CH2Cl2 gave in 5 min. refluxing 81% ethylbenzylferrocenylamine, m. 48-8.5°. N-Acetylferrocenylamine was reduced with LiAlH4 in Et2O to 94% ethylferrocenylamine m. 56.5-8°, identical with the specimen formed from ferrocenylamine and Et3O+BF4-.
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Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com