Reactions of electrophilic transition metal cations with olefins and small ring compounds. Rearrangements and polymerizations
作者:Ayusman Sen、Ta-Wang Lai、Richard R. Thomas
DOI:10.1016/0022-328x(88)87104-3
日期:1988.12
weakly ligated, transition metal compounds, [Pd(MeCN)4](BF4)2 (1); [M(MeCN)6](BF4)2, (M Ni, 2; Co, 3); [M(NO)2(MeCN)4](BF4)2, (M Mo, 4; W, 5), vis-à-vis olefins and strained ring compounds was studied. A number of these species were observed to form a charge-transfer complex with tetra-p-anisylethylene. These compounds were also found to catalyze the skeletal rearrangement and polymerization of appropriately
Chemistry of weakly solvated lanthanide-metal cations. Synthesis, characterization, and catalytic chemistry of [Eu(CH3CN)3(BF4)3]x
作者:Richard R. Thomas、Venkatasuryanarayana. Chebolu、Ayusman. Sen
DOI:10.1021/ja00274a039
日期:1986.7
Synthese paroxydationpar NOBF 4 d'Eu metallique dans CH 3 CN. Spectres RMN. Formation de complexes partransfertde charge avec le tetra-p-anisylethylene. Le complexe du titre initie l'isomerisation du quadricyclane et la polymerisation du pinene-2(10)
合成这些par oxydation par NOBF 4 d'Eu metallique dans CH 3 CN。幽灵RMN。形成 de complexes par transfert de charge avec le tetra-p-anisylethylene。Le complexe du titre initie l'isomerisation du quadricyclane et lapolymerisation du pinene-2(10)
Cationic β‐Scission of C−H and C−C Bonds for Selective Dimerization and Subsequent Sulfur‐Free RAFT Polymerization of α‐Methylstyrene and Isobutylene
dimerizations of α-methylstyrene (αMS) derivatives via β-C−H scission were subsequently used for sulfur-free cationic RAFT polymerization of αMS and isobutylene (IB) via β-C−C scission. Telechelic polymers and block copolymers of αMS and methyl methacrylate were also prepared from bifunctional exo-olefins and mechanistic transformations from cationic to radical RAFT polymerization, respectively,
Expanding the scope of bis(catecholato)germane catalysis: hydrosilylation, hydroboration, Friedel–Crafts alkylation and oligomerization
作者:Andrew T. Henry、Dana A. R. Nanan、Kim M. Baines
DOI:10.1039/d3dt01945d
日期:——
catalysis were examined. The hydrosilylation of benzaldehydes, hydroboration of phenylacetylene derivatives, and Friedel–Crafts alkylationusing arylalkenes and either diphenylamine or anisole was achieved. Furthermore, the recently reported oligomerization of α-methylstyrene catalyzed by bis(catecholato)germanes with weak donor ligands was examined further. The formation of a trimer species was observed