63708-53-2Relevant academic research and scientific papers
Process for the preparation of lactones from higher alkenols
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, (2008/06/13)
Process for the preparation of lactones, having 4 or 5 carbon atoms in the ring by reacting a higher alkenol with a carbon monoxide containing gas in the presence of a catalytic system comprising (a) a palladium compound, (b) a bidentate phosphine, arsine and/or stibine, and (c) a protonic acid having a pKa 2.
Process for the preparation of aldehydes
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, (2008/06/13)
Process for the preparation of aldehydes by hydroformylation of an alkenically unsaturated compound in the presence of (a) Pd, a Pd compound, Pt and/or a Pt compound, (b) an anion of a carboxylic acid with a pKa 1 R2 -M-R-M-R3 R4, wherein M is P, As or Sb, R is a divalent organic bridging group having at least 3 carbon atoms in the bridge, and R1, R2, R3 and R4 are hydrocarbon groups.
Process for the coproduction of anilines and oxamides
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, (2008/06/13)
A process for the coproduction of anilines of the formula wherein X is a halogen atom, an alkyl-, alkoxy-, aryloxy-, cyano-, ester- or trifluoromethyl group and n is an integer from 0 to 5, and oxamides of the formula wherein each R independently is an alkyl group which comprises reacting an aromatic nitro compound of the general formula wherein X and n are as defined above with carbon monoxide and a molar excess in relation to the nitro compound of an amine HNR2 wherein R is an alkyl group, in the presence of a catalyst system comprising (a) palladium metal or a compound thereof, (b) a bidentate ligand of the formula, R1R2--M--A--M--R3R4, in which M is P, As or Sb, A is a divalent organic bridging group having at least 2 carbon atoms in the bridge, none of these carbon atoms carrying substituents that may cause steric hindrance, and R1,R2,R3 and R4 represent similar or dissimilar optionally substituted hydrocarbon groups, and (c) an acid or a transition metal salt of said acid.
Process for the preparation of urea derivatives and catalyst system
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, (2008/06/13)
The invention relates to a process for the preparation of urea derivatives of the general formula wherein R is an alkyl group and X is a halogen atom, an alkyl-, alkoxy-, aryloxy-, cyano-, ester- or trifluoromethyl group and n is from 0 to 5,which comprises reacting an aromatic nitro compound of the general formula wherein X and n are as defined above with carbon monoxide and an amine HNR2 wherein R is an alkyl group,in the presence of a catalyst system comprising (a) a group VIII noble metal or a compound thereof, (b) a bidentate ligand and (c) an acid having a pKa of more than 2 or a transition metal salt of said acid.
