14463-05-9

Upstream product

• 513-81-5 2,3-dimethyl-buta-1,3-diene 
• 3376-52-1 pentaphenylcyclopentaphosphane 
• 75-77-4 chloro-trimethyl-silane 
• 108-18-9 diisopropylamine 
• 2176-06-9 diphenyldiphosphene 
• 75589-83-2 N,N-dimethylamino-P-phenyl-C-methylmethylenephosphine 
• 638-21-1 phenylphosphane 
• 89865-20-3 (1-Methoxy-1-phenylphosphanyl-ethyl)-dimethyl-amine 
• 15450-93-8 3-methyl-1-phenyl-3-phospholene 

Downstream Products

• 14463-04-8 4,5-dimethyl-1,2-diphenyl-1,2,3,6-tetrahydro-[1,2]diphosphinine 1,2-disulfide 

Relevant academic research and scientific papers

Evidence for Iron-Catalyzed α-Phosphinidene Elimination with Phenylphosphine

The ubiquitous half-sandwich iron complex [CpFe(CO)2Me] (Cp=η5-C5H5) appears to be a catalyst for α-phosphinidene elimination from primary phosphines. Dehydrocoupling reactions provided initial insight into this unusual reaction mechanism, and trapping reactions with organic substrates gave products consistent with an α elimination mechanism, including a rare example of a three-component reaction. The substrate scope of this reaction is consistent with generation of a triplet phosphinidene. In all, this study presents catalytic phosphinidene transfer to unsaturated organic substrates.

GENERAL APPROACHES TO PHOSPHINIDENES VIA RETROADDITIONS

Retroadditions - thermal and photochemical decomposition of phosphiranes and 3-phospholenes - offer general routes to free phosphinidenes.

Dialkylamino-phenyldi- and -triphosphides from the Degradation of (PhP)5 by Alkali Amides

(PhP)5 and lithium dialkylamides in tetrahydrofuran form equilibrium mixtures of lithium aminophenylphosphides (PhP)nNR2(-) with n = 3 and (mainly) 2.The monophosphides (n = 1) are not formed; it is concluded that they are generally unstable, decomposing to aminodiphosphides and cyclophosphines.Alkylation of an equilibrium mixture gives 1-alkyl-2-dialkylamino-diphenyldiphosphines which, however, are thermally unstable. (PhP)5 degradation equilibria using different anionic nucleophiles are compared. - Key words: Cyclophosphines, Nucleophilic Degradation Equilibria, Aminophosphides, Diphosphines, 13C NMR Spectra

PHOTOCHEMICAL REACTIONS OF PHOSPHAALKENES

Photolysis of phosphaalkenes leads to an inversion of polarity of the phosphorus carbon double bond and to a cleavage into transient phosphinidene and carbene; unexpected alcoholysis of a PIII-C bond and the cycloaddition of a linear phosphaalkene on a diene are also reported.