Ferrocenylindium Reagents in Palladium-Catalyzed Cross-Coupling Reactions: Asymmetric Synthesis of Planar Chiral 2-Aryl Oxazolyl and Sulfinyl Ferrocenes
作者:Mauro Mato、Cristina Pérez-Caaveiro、Luis A. Sarandeses、José Pérez Sestelo
DOI:10.1002/adsc.201601397
日期:2017.4.17
of ferrocenylindium species and palladium‐catalyzed cross‐coupling reactions for the synthesis of monosubstituted and planar chiral 1,2‐disubstituted ferrocenes is described. Triferrocenylindium reagents (Fc3In) are efficiently prepared in a one‐pot procedure from ferrocenes by lithiation and transmetallation to indium using InCl3. The palladium‐catalyzed cross‐coupling reactions of Fc3In (40 mol%)
Fluorosulfonylferrocene, (Trifluoromethylsulfonyl)ferrocene and New Ferrocenyl Sulfonates: Directed
<i>ortho</i>
Lithiation and New Anionic Thia‐Fries Rearrangements at Ferrocene
作者:Geanne M. R. Boston、Hendrik M. Philipp、Holger Butenschön
DOI:10.1002/ejic.202100785
日期:2021.12.21
Fluorinated ferrocenyl sulfonates undergo anionic thia-Fries rearrangements, whereas fluorinated ferrocenylsulfones allow for ortho lithiation. A rare ferrocene anellated 6,7,8,9-tetrafluorobenzo[c,e]-[1,2]oxathiine 5,5-dioxide was obtained by ortho lithiation of ferrocenyl (2,3,4,5,6-pentafluorobenzene)sulfonate followed by an intramolecular nucleophilic substitution.