摘要:
Process for the preparation of n-butyraldehyde and/or n-butanol, whereina) 1,3-Butadiene or a butadiene-containing hydrocarbon mixture is reacted with an alcohol of the formula IROH I, where R is C.sub.2 -C.sub.20 -alkyl or alkenyl which is unsubstituted or substituted by 1 or 2 C.sub.1 -C.sub.10 -alkoxy or hydroxyl groups, or is C.sub.6 -C.sub.10 -aryl, C.sub.7 -C.sub.11 -aralkyl or methyl, at elevated temperatures and superatmospheric pressure in the presence of a Bronsted acid or in the presence of a complex of an element of Group Ia, VIIA or VIIIA of the Periodic Table of Elements with phosphorus- or nitrogen-containing ligands to give a mixture of the adducts of the formulae II ##STR1## and III ##STR2## b) the adduct III is isomerized to the adduct II, c) the adduct II is converted into the acetal of the formula IV ##STR3## d) n-butyraldehyde and/or n-butanol are then produced from this acetal IV by reacting it, in the liquid phase, with hydrogen and water or water in the presence of a homogeneous or heterogeneous transition metal catalyst which differs from dicobaltoctacarbonyl or hydridocobalttetracarbonyl.
摘要翻译:PCT No.PCT / EP98 / 01324 Sec。 371日期1999年9月15日 102(e)1999年9月15日PCT 1998年3月6日PCT PCT。 第WO98 / 41494号公报 日期1998年9月24日制备正丁醛和/或正丁醇的方法,其中a)1,3-丁二烯或含丁二烯的烃混合物与式IROHI的醇反应,其中R是C2- C 1 -C 10 - 芳基,C 7 -C 11 - 芳烷基或甲基未被取代或被1或2个C 1 -C 10 - 烷氧基或羟基取代的C 1 -C 20 - 烷基或烯基,在高温和超大气压的存在下, Br + E,uml + EE ed ed ed ed ed acid acid the the the the the the the the the the the the the the the the the the the the the the the the the the the the the the the the the the the the the the the the the the the the 式II和III b)加合物III异构化为加合物II,c)加合物II转化为式IV的缩醛d)然后由该缩醛IV由该缩醛IV制备正丁醛和/或正丁醇,通过使 在液相中,在均相或不均匀转变的存在下,用氢和水或水进行反应 金属催化剂不同于二羰基羰基或氢化钴四羰基。
摘要:
Alcohols and/or aldehydes are prepared from olefins by cross-metathesis of olefins with alcohols having at least one double bond in the molecule and in which at least one hydroxyl is in the allyl position relative to a C.dbd.C double bond over catalysts of the formula (I)XX.sup.1 LL.sup.1 Ru [sic].dbd.CR.sup.1 R.sup.2 (I)with optional subsequent hydrogenation and/or isomerization, R.sup.1 and R.sup.2 being hydrogen or C-organic radicals with or without a heteroatom, X [sic] and X.sup.1 [sic] being, independently, anionic ligands, and L [sic] and L.sup.1 [sic] being, independently, neutral electron donor ligands.
摘要:
An industrial preparation of aldehydes and/or alcohols from olefins of more than 3 carbon atoms by a catalytic hydroformylation of the olefin reactant at a pressure of from 50 to 1000 bar and a temperature of from 50 to 180.degree. C. in the presence of an uncomplexed rhodium catalyst homogeneously dissolved in the reaction medium. The catalytic activity of the rhodium is maintained, first by extracting it from the initially discharged reaction mixture by means of an aqueous solution of a nitrogen-containing complexing agent such as sulfonated or carboxylated pyridines, quinolines or the like. In a recycle of the complexed rhodium to be reused in the hydroformylation reaction, the aqueous rhodium-containing extract is fed to a precarbonylation stage where it subjected to a required precarbonylation in the presence of an essentially water-insoluble organic liquid and in the presence of carbon monoxide, synthesis gas or another gas mixture containing carbon monoxide at from 50 to 1000 bar and from 50 to 180.degree. C. The mixture discharged from this precarbonylation stage is then separated into an organic phase containing the main part of the rhodium and an aqueous phase containing the complexing agent. The resulting rhodium-containing organic phase with the regenerated catalyst is then fed into the hydroformylation stage to complete its recycle.
摘要:
Phosphorus-containing calixarenes of the general formula I ##STR1## and a process for their preparation are described. Additionally, a process for the preparation of aldehydes by the hydroformylation of C.sub.3 -C.sub.20 -olefins by means of rhodium or ruthenium carbonyl complexes, in which the phosphorus-containing calixarenes of the formula I are used as ligands, is described.
摘要:
Aldehydes or aldehydes and alcohols are prepared by hydroformylation of olefins of more than 3 carbon atoms by a process comprising the stage of hydroformylation by means of a rhodium catalyst homogeneously dissolved in the reaction medium, the separation of the rhodium catalyst from the discharge from the hydroformylation reaction and the recycling of the rhodium separated from the hydroformylation discharge to the hydroformylation stage, wherein the rhodium catalyst is extracted from the hydroformylation discharge into the aqueous phase by means of an aqueous solution of a water-soluble, phosphorus-containing complexing agent selected from the group consisting of the mono- or polysulfonated mono- and oligophosphines and/or from the group consisting of the mono- or polycarboxylated mono- or oligophosphines or the mono- or polysulfonated oligophosphites and the aldehyde or the aldehyde and the alcohol are isolated from the extracted hydroformylation discharge, the aqueous rhodium-containing extract is fed to a precarbonylation stage and is subjected to a precarbonylation in the precarbonylation stage in the presence of an essentially water-insoluble, organic liquid and in the presence of carbon monoxide or of a carbon monoxide-containing gas mixture.