Chemistry Letters, Vol.47, No.1, 48-50, 2018
Transformation of Tertiary Amines at a Cationic [CCH] Subunit Stabilized by Coordination with a Tetrairon Core
Reaction of [(eta(5)-C5H4Me)(4)Fe-4(HCCH)(HCC-Br)](PF6) with NEt3 in acetonitrile gave the cyanomethylated product [(eta(5)-C5H4Me)(4)Fe-4(HCCH)(HCC-CH2CN)](PF6), while that in dichloromethane gave the [4Fe-4C]-substituted enamine [(eta(5)-C5H4Me)(4)Fe-4(HCCH)(HCC-CH= CHNEt2)](PF6). A possible mechanism starts from the Lewis acid-base interaction between the cationic [CCH] subunit and NEt3 on the tetrairon core.