Hydrodehalogenation of alkyl halides catalyzed by a trichloroniobium complex with a redox active α-diimine ligand
作者:Haruka Nishiyama、Hiromu Hosoya、Bernard F. Parker、John Arnold、Hayato Tsurugi、Kazushi Mashima
DOI:10.1039/c9cc03268a
日期:——
A high-valent d0 niobium(V) complex, (α-diimine)NbCl3 (1), bearing a dianionic redox-active α-diimine ligand served as a catalyst for a hydrodehalogenation reaction of alkylhalides in the presence of PhSiH3. During the catalytic reaction, the redox-active α-diimine ligand allowed the complex to reversibly release and accept one-electron through switching its coordination mode between a dianionic folded
Bicyclo[n.1.0]alkylsilanes: Nouvelle synthese et reactivite
作者:M. Ahra、M. Grignon-Dubois、J. Dunoguès
DOI:10.1016/0022-328x(84)85159-1
日期:1984.8
A new and competitive synthesis of bicyclo[n.1.0]trimethylsilanes is reported, involving a facile and rapid process, and giving both endo and exo isomers. The behavior of these species towards acids (HCl, (AcOH)2BF3) has been investigated. The stereochemistry of the substrate does not influence the regiochemistry of the electrophilic attack, while the stereochemistry of the largest ring plays a decisive
The reactions of 7,7-dichlorobicyclo-[4.1.0]heptane, 1 with organic bases were carried out in benzene and THF. The reaction course of 1 in nonpolarmedia is different from that in DMSO; the rearrangements of cyclopropene 3 taking place in the former. 8 is produced by the shift of double bond into the C6 ring. The cyclopropene-carbene isomerization and reactions of carbenes 14 and 15 with alkoxide anions
Low-temperature Reaction of<i>gem</i>-Dihalocyclopropanes with Activated Magnesium
作者:Teiichi Ando、Takeshi Muranaka、Takashi Ishihara
DOI:10.1246/bcsj.54.3227
日期:1981.10
The reaction of 7-bromo-7-chlorobicyclo[4.1.0] heptane and 7-bromo-7-fluorobicyclo[4.1.0] heptane with activated magnesium in THF at −50 to −40 °C gave 7-bromobicyclo[4.1.0] heptane, in addition to 7-chloro- and 7-fluorobicyclo[4.1.0] heptane, respectively.