5271-36-3

Upstream product

• 20472-49-5 ethyl diphenylthiophosphinite 
• 75-03-6 ethyl iodide 
• 607-01-2 ethyl-diphenyl-phosphane 
• 108-86-1 bromobenzene 
• 1605-53-4 diethyl-phenyl-phosphine 
• 603-35-0 triphenylphosphine 
• 20472-52-0 iodo-diphenyl-phosphine 
• 14311-22-9 phenylthiodiphenylphosphine 
• 1079-66-9 chloro-diphenylphosphine 
• 644-97-3 Dichlorophenylphosphine 
• 587-85-9 diphenylmercury(II) 
• 694-80-4 2-bromo-1-chlorobenzene 
• 719-80-2 Ethyl diphenylphosphinite 
• 16029-98-4 trimethylsilyl iodide 

Downstream Products

• 18654-73-4 1-[(E)-(but-1-en-1-yl)]-4-chlorobenzene 
• 1733-57-9 ethydiphenylphosphine oxide 
• 49800-74-0 (E)-1-(but-1-en-1-yl)-4-nitrobenzene 
• 18657-09-5 (E)-1-(but-1-en-1-yl)-4-methoxybenzene 
• 1253040-09-3 diphenyldiethylphosphonium hydroxide 
• 1005-64-7 trans-1-phenyl-1-butene 

Relevant academic research and scientific papers

ITQ-40, New Crystalline Microporous Material

ITQ-40 (INSTITUTO DE TECNOLOGíA QUíMICA number 40) is a new crystalline microporous material with a framework of tetrahedral atoms connected by atoms capable of bridging the tetrahedral atoms, the tetrahedral atom framework being defined by the interconne

USE OF CYCLOVINYL PHOSPHINE/COPPER COMPLEXES AS ARYLATION CATALYSTS

The invention relates to the use of cyclovinyl phosphine compounds in the form of complexes with copper, as catalysts for reactions leading to the formation of carbon-carbon and carbon-heteroatom bonds. The invention also relates to complexes of copper with at least one cyclovinyl phosphine, as well as to the method for creating a carbon-carbon or a carbon-heteroatom bond catalysed by a cyclovinyl phosphine/copper complex.

Studies on the efficient generation of phosphorus-carbon bonds via a rearrangement of PIII esters catalysed by trimethylhalosilanes

Halotrimethylsilanes Me3SiX (X = Br, I) catalyse rearrangements of tricoordinate phosphorus esters R′R″P-OR into the corresponding phosphoryl systems R′R″P(O)R. This provides a simple and efficient route to a variety of structures containing phosphorus-carbon bonds, under mild conditions and with good yields. The reaction mechanism was investigated in detail by 31P NMR spectroscopy and independent synthesis of the reaction intermediates. It has been demonstrated that the primary products of this catalytic reaction are halogeno PIII structures R′R″PX and silyl ethers ROSiMe3 and that they subsequently react to give the corresponding phosphorus silyl esters - Me 3SiOPR′R″-and alkyl halides RX. At higher temperatures these intermediates then react to form R′R″P(P)R compounds. This paper also features the surprising observation that when esters Ph 2POR and halotrimethylsilanes Me3SiX (X = Br, I) are used in 2:1 ratio, phosphonium salts Ph2R2P+X - and trimethylsilyl diphenylphosphinate - Ph2P(O) OSiMe3 - are formed as the major products. Experimental evidence indicates that the mechanisms of both reactions are fundamentally different from that of the Michaelis-Arbuzov reaction. Me3SiCl is not reactive and this paper explains why.

Synthesis of Diphenyldialkylphosphonium Salts

A general method for synthesis of the title compounds by a one-pot reaction is described.It consists in the double alkylation of lithium diphenylphosphide, obtained by the reaction of triphenylphosphine, lithium and tert-butyl chloride.This procedure can also be used for α-functional alkylating agents.

Kinetics of Alkaline Hydrolysis of Quaternary Phosphonium Salts. The Influence of Aprotic Solvents on the Hydrolysis of Ethyl(phenyl)phosphonium Iodides.

Third-order rate constants have been determined for the hydrolyses of the ethyl(phenyl)phosphonium iodides (1) in aqueous methanol and in aqueous tetrahydrofuran.The very large increase in the rate of hydrolysis of tetra- and tri-arylphosphonium salts which is induced by the addition of tetrahydrofuran to the medium drops to almost zero for tetra- and tri-alkylphosphonium salts.This is attributed to an increase in the delocalisation of the positive charge in phosphorus, which leads to less specific solvation of the alkylphosphonium ions.