82631-93-4Relevant academic research and scientific papers
Highly Active and Selective Ethylene Oligomerization Catalyst and Method of Preparing Hexene or Octene Using the Same
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Page/Page column 9, (2012/06/01)
This invention relates to a chromium complex compound for selective ethylene oligomerization including a chiral ligand, and to a method of selectively preparing 1-hexene or 1-octene from ethylene using the same.
Ethylene oligomerization catalyst systems having enhanced selectivity
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Page/Page column 22, (2013/02/27)
Disclosed herein is a catalyst system for selective oligomerization of ethylene, which comprises a P—C—C—P frame-work ligand, which is (R1)(R2)P—(R5)CHCH(R6)—P(R3)(R4), and a chromium-based metal compound. Also disclosed is a method of greatly enhancing the activity and selectivity of oligomerization, such as trimerization or tetramerization, using a ligand having a specific steric arrangement structure.
Stereoselective Addition of Diphenylphosphine: meso- and rac-1,2-Diphenyl-1,2-bis(diphenylphosphino)ethane and their Group 6 Metal Tetracarbonyl Complexes. Crystal Structures of the Molybdenum Derivatives
Bookham, Jonathan L.,McFarlane, William,Thornton-Pett, Mark,Jones, Simon
, p. 3621 - 3627 (2007/10/02)
The addition of diphenylphosphine, PPh2H, to diphenylethyne in the presence of KOBut has been followed by 31P n.m.r. spectroscopy, and according to the reaction conditions can yield cis, (2) or trans, (3), 1,2-diphenyl(diphenylphosphino)ethene
The Mechanism of Asymmetric Hydrogenation. Chiral Bis(diphenylphosphino)-α-phenylalkane Complexes in Catalytic and Structural Studies
Brown, John M.,Murrer, Barry A.
, p. 489 - 498 (2007/10/02)
(R)-1,2-Bis(diphenylphosphino)phenylethane has been synthesised in good overall yield from (S)-mandelic acid ; its cationic rhodium(I) solvated complex has been shown to be effective in catalytic asymmetric hydrogenation with optical yields of up to 88percent having been observed.The n.m.r. spectra of complexes of this phosphine are discussed.Racemic (R*,R*)-1,3-bis(diphenylphosphino)-1,3-diphenylpropane and (R*,R*)-1,4-bis(diphenylphosphino)-1,4-diphenylbutane have been prepared.These form a range of rhodium complexes with dehydroamino-acids whose structures may be assigned on the basis of characteristic n.m.r.P-Rh and P-P coupling constants.
