Syntheses and structural characterisation of the compounds [Pd(dba)L2] (where L=PBz3 and PPh2Np) and the novel dimer [Pd2(μ-dba)(μ-SO2)(PBz3)2]
作者:Andrew D Burrows、Nick Choi、Mary McPartlin、D.Michael P Mingos、Stephen V Tarlton、Ramón Vilar
DOI:10.1016/s0022-328x(98)00877-8
日期:1999.1
report the synthesis and structuralcharacterisation (when L=PBz3 and PPh2Np) of the compounds [Pd(dba)L2] (where L, PPh2Np 1, PPh2An 2, PPhNp23 and PBz34; Np, 1-naphthyl; An, anthracenyl; Bz, benzyl; and dba, dibenzylideneacetone) from [Pd2(dba)3] and the corresponding phosphine. All these complexes with the exception of 4 retain their structures in solution. The 31P-NMR spectrum of 4 is both solvent
Propylene streams obtained by the conversion of oxygenates to olefins are used as feeds for hydroformylation. The streams may contain measurable amounts of dimethyl ether without adversely impacting the hydroformylation.
[EN] IMPROVEMENTS IN OR RELATING TO ISOBUTYLENE<br/>[FR] AMELIORATIONS APPORTEES A OU RELATIVES A L'ISOBUTYLENE
申请人:EXXONMOBIL CHEM PATENTS INC
公开号:WO2005028404A1
公开(公告)日:2005-03-31
High purity isobutylene streams are obtained by the hydroformylation of mixed butene streams containing butene-1 and isobutylene (and optionally butene-2) under conditions that hydroformylate primarily butene-1 to yield a mixture of valeraldehyde and isobutylene, which may be separated out as an enriched isobutylene stream and used in the production of methyl tertiary butyl ether, tertiary butyl alcohol, di-isobutylene or polyisobutylene.
[EN] HYDROFORMYLATION OF BUTENES COMPRISING ISOBUTYLENE<br/>[FR] HYDROFORMYLATION DE BUTENES COMPRENANT DE L'ISOBUTYLENE
申请人:EXXONMOBIL CHEM PATENTS INC
公开号:WO2005028407A1
公开(公告)日:2005-03-31
Mixed butene streams containing butene-1 and isobutylene and optionally butene-2 are hydroformylated under conditions that hydroformylates all the monomers to yield a mixture of valeraldehydes. Higher temperatures and/or longer residence times and/or higher partial pressure of carbon monoxide than in conventional processes are used to ensure hydroformylation of all the monomers.
Complexes of gold(I) and platinum(II) with polyaromatic phosphine ligands
作者:Thomas E Müller、Jennifer C Green、D.Michael P Mingos、C.Mary McPartlin、Conrad Whittingham、David J Williams、Thomas M Woodroffe
DOI:10.1016/s0022-328x(97)00522-6
日期:1998.1
Gold and platinum(II) complexes of the phosphine ligands PArnPh3−n (Ar=naphthyl, anthracenyl, ferrocenyl and other polyaromatic groups) have been synthesised. The electron donating abilities of naphthyl and anthracenyl phosphine ligands has been explored using gas phase photoelectron spectral data on the parent phosphines and their relative complexing ability to platinum precursor molecules has been