摘要:
The reactions of hydroxymethylferrocene, alpha-hydroxyethylferrocene, and 1,1'-bis(alpha-hydroxyethyl)ferrocene with N-ferrocenylalkyl-substituted benzotriazoles, hexamethylenetetramine, and azaferrocene in the CH2Cl2 - 48% aqueous HBF4 two-phase system afforded N-mono-, N-1,1'-ferrocenylene-bis-alpha-alkylated, and 1,3-bis-ferrocenylalkylated tetrafluoroborates of the above-mentioned heterocyclic compounds in high yields. An X-ray structural study of 1,3-bis-(ferrocenylmethyl)benzotriazolium tetrafluoroborate confirmed unambiguously the 1,3-arrangement of the ferrocenylmethyl groups in the heterocycle.