Silylcyclopropanes by Selective [1,4]-Wittig Rearrangement of 4-Silyl-5,6-dihydropyrans
作者:Luis M. Mori-Quiroz、Emmanuel W. Maloba、Robert E. Maleczka
DOI:10.1021/acs.orglett.1c01838
日期:2021.8.6
selective [1,4]-Wittig rearrangements to give silylcyclopropanes in good yields. The selectivity is independent of the silyl group, but it is influenced by the electronic character of the migrating center. Electron-rich and electron-neutral (hetero)aryl groups and aliphatic substituents at the migrating center lead to exclusive [1,4]-migration, whereas electron-deficient aryl groups predominantly afford
Carbon−Carbon Bond Formation Involving a Vinylidene Ligand and Ferrocenyl Substituent in Cationic Ruthenium Complexes
作者:Li-Han Chang、Cheng-Wei Yeh、Hao-Wei Ma、Shu-Yu Liu、Ying-Chih Lin、Yu Wang、Yi-Hong Liu
DOI:10.1021/om900775r
日期:2010.3.8
olefin metathesis process between the C═C double bond of a vinylidene ligand and a pendant vinyl group in several ruthenium complexes, each with a ferrocenyl group, is followed by an additional intramolecular C−C bondformation between a Cp ligand of the ferrocenyl substituent and the vinylidene ligand. The regioselectivity of the C−C bondformation reaction at either the substituted or the nonsubstituted