Basf Aktiengesellschaft

Basf Se Corporation

Klaus Breuer

Joaquim Henrique Teles

Hartmut Hibst

Norbert Rieber

Dirk Demuth

Walter Dobler

Gerd Kaibel

Alois Kindler

Werner Aquila

Christian Miller

Thomas Dirnsteiner

Alexander Panchenko

Alfred Hagemeyer

Heinz Etzrodt

Achim Pommer

Martin Ernst

Udo Rheude

Nicolas Vautravers

Hans-Georg Goebbel

Frederic Lucas

Regina Benfer

Christopher William Rieker

Wulf Kaiser

Andreas Weickgenannt

Jan-Oliver Weidert

Ralph Busch

Norbert Gutfrucht

Fritz Nimtz

Katrin Klass

Thilo Hahn

Frank Hettche

Rajendra Sundar

Sandra Kramp

Nicolaus Bahr

Artur Kozicki

Hidehiko Mizuno

Stefan Kaeshammer

Katrin Klaβ

Chee Kean Tham

A composition comprising compound (I) of formula and compound (II) of formula wherein Rand Rindependently from each other are a linear alkyl group with 1 to 4 carbon atoms and R, R, Rto Rand Rto Rindependently from each other are a hydrogen atom or a linear alkyl group with 1 to 4 carbon atoms. 

Mixture of N-(1,3-benzothiazol-2-ylsulfanyl)-2-methyl-cyclohexanamine and N-(1,3-benzothiazol-2-ylsulfanyl)-4-methyl-cyclohexanamine

A process for preparing trans-enriched MDACH, including: distilling an MDACH starting mixture in the presence of an auxiliary, which is an organic compound having a molar mass of 62 to 500 g/mol, a boiling point at least 5&#xb0; C. above the boiling point of cis,cis-2,6-diamino-1-methylcyclohexane, and 2 to 4 functional groups, each of which is independently an alcohol group or a primary, secondary or tertiary amino group. The MDACH starting mixture includes 0 to 100% by weight of 2,4-MDACH and 0 to 100% by weight of 2,6-MDACH, based on the total amount of MDACH present in the MDACH starting mixture. The MDACH starting mixture includes both trans and cis isomers. Trans-enriched MDACH includes 0 to 100% by weight of 2,4-MDACH and 0 to 100% by weight of 2,6-MDACH, where the proportion of trans isomers in the mixture is higher than the proportion of trans isomers in the MDACH starting mixture.

Method for producing cis- and trans-enriched MDACH

A process is described for preparing tetrahydrogeranylacetone in which pseudoionone, geranylacetone and/or dihydrogeranylacetone in a liquid phase, in which particles of a catalyst which is capable of preferentially hydrogenating carbon-carbon double bonds over carbon-oxygen double bonds are suspended, is conducted through a device which inhibits the transport of the catalyst particles in the presence of a hydrogen-containing gas.

Method for the production of tetrahydrogeranylacetone

A dividing-wall column having a dividing wall which is essentially disposed along the long direction of the column is proposed, which divides the column interior into a feed part, a take off part, an upper shared column part and a lower shared column part, with feed in whole or in part in the vaporous state of a mixture to be separated between the upper region of the feed part and the lower region of the feed part and/or side stream take off in whole or in part in the vaporous state between the upper region of the take off part and the lower region of the take off part, where if feed is in whole or in part in the vaporous state the cross-sectional area of the upper region of the feed part is increased by plane-parallel displacement of the dividing wall toward the upper region of the take off part, and/or if the side stream take off is in whole or in part in the vaporous state, the cross-sectional area of the lower region of the take off part is increased by displacement of the dividing wall toward the lower region of the feed part, in such a manner that the F factor is substantially the same in all column regions.

Dividing-wall column with feed in whole or in part in the vaporous state and/or side stream take off in whole or in part in the vaporous state

The invention relates to a continuous process for producing pseudoionones of general formulas (I) and (I') as well as isomers thereof, whereby: Rrepresents CHor (a); Rand Rrepresent hydrogen, CHor CH, and; Rand Rrepresent hydrogen or CH. These pseudoionones are produced by reacting an aldehyde of formula (II) with an excess of a ketone of general formula (III), whereby R, Rand Rhave the aforementioned meanings, in the presence of water and alkali hydroxide at an increased temperature and in a homogeneous solution. The inventive process is characterized in that: a) the intermixing of the homogeneous solution consisting of aldehyde, ketone and aqueous alkali lye occurs at a temperature ranging from 10 to 120&#xb0; C.; b) the undissolved water and alkali hydroxide contained in the reaction mixture are subsequently separated out; c) while avoiding back mixing, the homogeneous reaction mixture is then guided through a reactor, which permits a residence time ranging from 2 to 300 minutes, at a temperature that is 10 to 120&#xb0; C. higher than the boiling point of the lowest-boiling component and under a vapor pressure p ranging from 10to 10Pa; d) the reaction mixture is cooled by expansion; e) ketone is removed from the reaction mixture using vapor flowing in the opposite direction and; f) the raw product is dried and rid from excessive aldehyde and secondary components via a rectification column 

Continuous process for producing pseudoionones and ionones

Method for producing enol ethers

Unsaturated ketones of the formulae Ia and Ib

Preparation of unsaturated ketones

A process for preparing compounds of the formulae I and II ##STR1## where R.sup.1 and R have the meanings indicated in the specification by an addition reaction of a compound of the formula III

Addition reaction of hydroxy1-containing compounds with alkynes or

Compounds of the formula I and II ##STR1## where R.sup.1 is hydrogen or an aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic radical or an acyl radical, it being possible for these radicals to carry further substituents which do not react with acetylenes or allenes, and the radicals R, independently of one another, are hydrogen or aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic radicals which may be linked to one another with formation of a ring and m is 0 or 1, are prepared by an addition reaction of a compound of the formula III

Addition reaction of hydroxyl-containing compounds with alkynes or

Compounds of the formulae I and II ##STR1## are prepared by an addition reaction of a compound of the formula III

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Altrip, Germany

Klaus Breuer