17427-91-7

Upstream product

• 829-85-6 diphenylphosphane 
• 5112-95-8 bis(diphenylphosphino)acetylene 
• 75-35-4 1,1-Dichloroethylene 
• 540-49-8 cis+trans-dibromoethylene 

Downstream Products

• 117023-98-0 β-Mo2Cl4(dppee)2 
• 21044-41-7 (cis-1,2-bis(diphenylphosphino)ethene)(CO)2nickel⁽⁰⁾ 
• 116791-07-2 Mo₂(O₂CCH₃)2Cl₂(dppee) 
• 116791-10-7 Mo₂(O₂CCH₃)2Br₂(dppee) 
• 119325-76-7 (1,2-bis(diphenylphosphino)ethylene)Pt(C₆F₅)Cl 
• 127593-07-1 cis-oxotrichloro(cis-1,2-bis(diphenylphosphino)ethylene)rhenium(V) 
• 106564-79-8 {nickel(II)(1,2-bis(diphenylphosphino)ethylene)Br₂} 
• 98839-56-6 (1,2-bis(diphenylphosphino)ethylene)Pt(Ph)Cl 
• 158019-99-9 [(C₅H₅)RuCl[(C₆H₅)2PC₂H₂P(C₆H₅)2]] 
• 105159-52-2 Ru₃H₂S((CH)2(P(C₆H₅)2)2)(CO)7 
• 85168-57-6 PtCl(C₃H₅)[(C₆H₅)2PC₂H₂P(C₆H₅)2] 
• 264197-45-7 ((C₆H₅)2PCH)2Pt(CH₃)2 

Relevant academic research and scientific papers

ETHYLENE TETRAMERIZATION CATALYST SYSTEMS AND METHOD FOR PREPARING 1-OCTENE USING THE SAME

Disclosed herein is a method of preparing 1-octene at high activity and high selectivity while stably maintaining reaction activity by tetramerizing ethylene using a chromium-based catalyst system comprising a transition metal or a transition metal precursor, a cocatalyst, and a P—C—C—P backbone structure ligand represented by (R1)(R2)P—(R5)CHCH(R6)—P(R3)(R4).

ACETYLENIC HYDROCARBONS AND VINYL HALIDES IN THE ALKYLATION OF PH ACIDS UNDER CONDITIONS OF PHASE-TRANSFER CATALYSIS OR IN SUPERBASIC MEDIUM

By the reaction of nonactivated acetylenes with diphenylphosphine under phase-transfer catalysis or in superbasic medium the corresponding mono- and diphosphines were obtained, whereas with diphenylphosphine oxide only bis(phosphine oxides) were formed.Diphenylphosphine was found to react with 1,1- and 1,2-dichloroethenes, as well as with 1,1,2-trichloroethane, yielding 1,2-bis(diphenylphosphino)ethene.The reactions of E-1-chloro-2-phenyl- and 1-chloro-1-phenylethenes with diphenylphosphine under similar conditions lead either to E-1-diphenylphosphino-2-phenylethene or to bisphosphine with a ratio of reactants of 1:1 or 1:2 respectively.Diphenylphosphine oxide gives bis(phosphine oxides) in all the above cases.Stereochemistry and mechanism of the reactions are discussed.

Contributions to the Chemistry and Structures of Tris(diphenylphosphino)ethene and 1,1,4,4-Tetrakis(diphenylphosphino)-1,3-butadiene

Reaction of tris(diphenylphosphino)ethene (1), obtained by base-catalyzed hydrophosphorylation of Ph2PCCPPh2 with Ph2PH, with 2 equivalents of H3B*OC4H8 affords 1,1-bis(boranatodiphenylphoshonio)-2-(diphenylphosphino)ethene (2).Methylation of 1 with MeI gives the monoquaternary salt 3, the molecular structure of which was determined by X-ray crystallography.A trisulfide 4 is available by treatment of 1 with elemental sulfur. - 1,1,4,4-Tetrakis(diphenylphosphino)-1,3-butadiene (5) was isolated as a byproduct in the synthesis of 1. 1,1,4,4-substitution was established by X-ray analysis of the tetrasulfide 6, obtained by treatment of 5 with elememtal sulfur.Reaction of 5 with 2 equivalents of Mo(CO)6 yields the symmetrical, dinuclear complex 7. - Key Words: Tris(diphenylphosphino)ethene derivatives / 1,1,4,4-Tetrakis(diphenylphosphino)-1,3-butadiene derivatives / Molybdenum complex