29949-72-2

Upstream product

• 109-72-8 n-butyllithium 
• 13716-10-4 di(tert-butyl)chlorophosphine 
• 693-04-9 butyl magnesium bromide 

Downstream Products

• 1071965-85-9 PdBr(P(C₄H₉)(C(CH₃)3)2)2(COC₆H₄CF₃) 
• 67063-29-0 PtH₂(P(C(CH₃)3)2C₄H₉)2 
• 7647-14-5 sodium chloride 
• 19287-45-7 diborane 
• 76711-33-6 [2-(Di-tert-butyl-phosphinoyl)-pent-1-enylidene]-phenyl-amine 
• 78303-29-4 1-[1-Chloro-2-(di-tert-butyl-phosphinoyl)-pentyl]-4-nitro-benzene 
• 75-25-2 Bromoform 
• 81193-50-2 butyl-di-t-butylchlorophosphonium bromide 

Relevant academic research and scientific papers

PROCESS FOR PRODUCING TERTIARY PHOSPHINE HAVING BULKY HYDROCARBON GROUP BONDED

The present invention provides a production process by which tertiary phosphine with an attached sterically bulky hydrocarbon group, said tertiary phosphine being useful as a ligand of a transition metal catalyst in organic synthesis reactions, can be produced in a high yield and with high purity on an industrial scale through simple and safe operations. The present invention comprises allowing a dialkylphosphinous halide to react with a Grignard reagent in the presence of a copper compound in an amount corresponding to 0.1 to 5% by mol based on the dialkylphosphinous halide to produce tertiary phosphine represented by the following formula (3) : wherein R1 and R2 are each a tertiary hydrocarbon group of 4 to 13 carbon atoms, and R3 is an alkyl group, an alkenyl group, an aryl group or the like.

REACTIONS OF STERICALLY HINDERED PHOSPHINES WITH CARBON TETRAHALIDES: P-HALOGENYLIDS

1.A study has been made of the effects of steric factors on the reactions of tertiary phosphines with carbon tetrahalides.It is found that in the interaction of sterically hindered phosphine with carbon tetrabromide one gets the formation of bromophosphonium tribromomethylid, which exists at a low temperature, this being in an ionic pair containing the anion CBr3-.A sterically hindered phosphine having hydrogen at the α carbon atom forms P-halogenylids on reaction with carbon tetrahalides. 2.Unstabilized P-halogenylids with unsubstituted methylene and alkylidene gr oups have been synthesized, and also P-halogenylids with trimethylsilyl, methyl sulfide, phosphine, acyl, and aromatic groups on the ylid carbon atom. 3.A study has been made of the reactions of P-chlorylids with chlorine-bearing electrophilic reagents , which give rise to new P-halogenylids.