Catalysis of olefin oligomerization by Ni(I) complexes

Mechanistic Studies of Ethylene and α-Olefin Co-oligomerization Catalyzed by Chromium-PNP Complexes.

To explore the possibility of producing a narrow distribution of mid- to long-chain hydrocarbons from ethylene as a chemical feedstock, co-oligomerization of ethylene and linear α-olefins (LAOs) was investigated, using a previously reported chromium complex, [CrCl(3)(PNP(OMe))] (1, where PNP(OMe) = N,N-bis(bis(o-methoxyphenyl)phosphino)methylamine). Activation of 1 by treatment with modified me...

Advances in non-metallocene olefin polymerization catalysis.

B. Anionic Ligands 302 IX. Group 9 Catalysts 302 X. Group 10 Catalysts 303 A. Neutral Ligands 303 1. R-Diimine and Related Ligands 303 2. Other Neutral Nitrogen-Based Ligands 304 3. Chelating Phosphorus-Based Ligands 304 B. Monoanionic Ligands 305 1. [PO] Chelates 305 2. [NO] Chelates 306 3. Other Monoanionic Ligands 306 4. Carbon-Based Ligands 306 XI. Group 11 Catalysts 307 XII. Group 12 Catal...

1,2,3-Triazolylidene ruthenium(II)-cyclometalated complexes and olefin selective hydrogenation catalysis.

Silver(i) 1,2,3-triazol-5-ylidenes [(RCH(2)C(2)N(2)(NMe)Ph)(2)Ag][AgCl(2)] (R = Ph 3a, C(6)H(2)iPr(3) 3b, C(6)H(2)Me(3) 3c) and [(PhCH(2)C(2)N(2)(NMe)R)(2)Ag][AgCl(2)] (R = C(6)H(4)Me 3d, C(6)H(4)CF(3) 3e) were synthesized and subsequently treated with RuHCl(PPh(3))(3) and RuHCl(H(2))(PCy(3))(2). The reaction 3a of with RuHCl(PPh(3))(3) gave RuHCl(PPh(3))(2)(PhCH(2)C(2)N(2)(NMe)Ph) (4a1) as the...

Enantioselective Olefin Metathesis with Cyclometalated Ruthenium Complexes

The success of enantioselective olefin metathesis relies on the design of enantioenriched alkylidene complexes capable of transferring stereochemical information from the catalyst structure to the reactants. Cyclometalation of the NHC ligand has proven to be a successful strategy to incorporate stereogenic atoms into the catalyst structure. Enantioenriched complexes incorporating this design el...

Chiral olefin ligands-new "spectators" in asymmetric catalysis.