[BREITSCHEIDEL, Boris, WALTER, Marc, KRATZ, Detlef, SCHULZ, Gerhard, SAUERWALD, Manfred] D-67056 Ludwigshafen;Trifelsring 61a D-67117 Limburgerhof;Hans-Holbein-Strasse 5d D-67227 Frankenthal;Eckener Strasse 2 D-69121 Heidelberg;Uhlandstrasse 55 D-67069 Ludwigshafen;Im Langen Satz 2 D-67149 Meckenheim The invention relates to a method for the catalytic hydrogenation of a carbonyl compound, or a mixture of two or more carbonyl compounds, in the presence of a Raney copper catalyst. The Raney copper catalyst is used in nugget form.

[Jorg Botzem, Hansgeorg Ernst, Johannes Grimmer, Claudia Merk, Thomas Muller, Manfred Sauerwald] DE Limburgerhof The invention relates to a method for producing compounds of general formula (I), wherein Rt represents an oxocyclohexyl radical which is optionally substituted by a hydroxyl radical, an alkoxy radical, and/or alkyl radicals, or an oxocyclohexenyl radical which is optionally substituted by a hydroxyl radical, an alkoxy radical, and/or alkyl radicals, the oxo groups being in the form of an acetal, a ketone, or an enol ether, and R2 represents a hydroxy group or a protective group which can be transformed into a hydroxy group by means of hydrolysis. A compound of general formula (II) is cathodically reduced in a divided or partially divided electrolysis cell at a pH value of between 2 and 9. 1

[Michael Hesse, Detlef Kratz, Gerhard Schulz, Marc Walter, Manfred Sauerwald] ,Worms,,;,Heidelberg,,;,Ludwigshafen,,;,Frankenthal,,;,Meckenheim,, A process for the catalytic hydrogenation of a carbonyl compound or of a mixture of two or more carbonyl compounds in the presence of a catalyst which comprises an inorganic support containing TiO 2 , and as active component copper or a mixture of copper and at least one of the metals selected from the group of zinc, aluminum, cerium, a noble metal and a group VIII metal, wherein the copper surface area does not exceed 10 m 2 /g.

[HESSE, Michael, KRATZ, Detlef, SCHULZ, Gerhard, WALTER, Marc, SAUERWALD, Manfred] D-67056 Ludwigshafen;Weinbietstrasse 10 D-67549 Worms;Eckener Strasse 2 D-69121 Heidelberg;Uhlandstrasse 55 D-67069 Ludwigshafen;Hans-Holbein-Strasse 5d D-67227 Frankenthal;Im Langen Satz 2 D-67149 Meckenheim The invention relates to a method for the catalytic hydrogenation of a carbonyl compound or of a mixture comprised of two or more carbonyl compounds in the presence of a catalyst. Said catalyst comprises an inorganic supporting material containing TiO2, and, as an active component, copper or a mixture of copper with at least one of the metals selected from the group zinc, aluminum, cerium, a precious metal and a metal of subgroup VIII. The invention is characterized in that the copper surface amounts to a maximum of 10 m2/g.

[BRUDERMÜLLER, Martin, IRGANG, Matthias, SCHMIDT-RADDE, Martin, MERGER, Franz, WITZEL, Tom, KRATZ, Detlef, DANZ, Eckehard, WITTWER, Arnold, HESSE, Michael, SAUERWALD, Manfred, FREIRE ERDBRÜGGER, Cristina] D-67056 Ludwigshafen;Riegeler Weg 4 D-68239 Mannheim;Andreas-Hofer-Weg 41 D-69121 Heidelberg;Beethovenstrasse 19 D-67259 Beindersheim;Max-Slevogt-Strasse 25 D-67227 Frankenthal;Kriemhildstrasse 34 D-67069 Ludwigshafen;Eckener Strasse 2 D-69121 Heidelberg;Hermann-Hesse-Strasse 42 D-67071 Ludwigshafen;Ginsterweg 13 D-67434 Neustadt;Wagnerstrasse 1b D-67105 Schifferstadt;Im Langen Satz 2 D-67149 Meckenheim;Franz-Bettinger-Strasse D-67240 Bobenheim-Roxheim An alcohol preparation process is disclosed by catalytic hydrogenation of the corresponding carbonyl compounds at high temperature and pressure in liquid phase. A catalyst is used that contains copper on a SiO2-containing substrate in the presence or absence of one or several elements selected among magnesium, barium, zinc or chromium.

[BOTZEM, Jörg, ERNST, Hansgeorg, GRIMMER, Johannes, MERK, Claudia, MÜLLER, Thomas, SAUERWALD, Manfred] 67056 Ludwigshafen;Albert-Einstein-Allee 8c 67117 Limburgerhof;Bussardweg 62 67346 Speyer;Dürerstrasse 12 67061 Ludwigshafen;Holzstrasse 6 82256 Fürstenfeldbruck;Bodelschwinghstrasse 13a 67246 Dirmstein;Im Langen Satz 2 67149 Meckenheim The invention relates to a method for producing compounds of general formula (I), wherein Rl represents an oxocyclohexyl radical which is optionally substituted by a hydroxyl radical, an alkoxy radical, and/or alkyl radicals, or an oxocyclohexenyl radical which is optionally substituted by a hydroxyl radical, an alkoxy radical, and/or alkyl radicals, the oxo groups being in the form of an acetal, a ketone, or an enol ether, and R2 represents a hydroxy group or a protective group which can be transformed into a hydroxy group by means of hydrolysis. A compound of general formula (II) is cathodically reduced in a divided or partially divided electrolysis cell at a pH value of between 2 and 9.