om400936b_si_001.pdf (14.34 MB)
Inter- versus Intraannular Ring-Closing Metathesis of Polyallylferrocenes: Five-Fold RCM within a Single Molecule
journal contribution
posted on 2013-11-11, 00:00 authored by Masamichi Ogasawara, Wei-Yi Wu, Sachie Arae, Kiyohiko Nakajima, Tamotsu TakahashiTreatment
of decaallylferrocene (1) with the Grubbs-II
catalyst in refluxing dichloromethane has promoted the 5-fold ring-closing
metathesis in 1 to afford single-bridged bis(1,4,5,8-tetrahydrofluorenyl)iron(II)
species 3 in excellent yield. The preferential formation
of 3 over quintuply bridged “superferrocenophane” 2 was explained as the intraannular RCM process being preferred
over the interannular one in the reactions of polyallylferrocenes.