| 摘要 |
1286031 Buten-2-ol-4 compounds BADISCHE ANILIN- & SODA-FABRIK AG 14 Jan 1970 [15 Jan 1969] 1777/70 Heading C2C A process for the production of a buten-2-ol-4 compound having the general formula wherein R 1 to R 5 denote a hydrogen atom or an aliphatic radical, provided that R 2 may also denote a -CHO radical, R 2 and R 5 together with the intermediate carbon atoms may form an alicyclic ring, and R4 may be a cycloaliphatic, araliphatic or aromatic radical or a radical wherein R 6 is an aliphatic, cycloaliphatic, araliphatic, or aromatic radical, by isomerizing a buten-l-ol-4 compound of the formula in the presence of palladium and/or a palladium compound and hydrogen. The reaction is preferably carried out at 0‹ to 250‹ C. in the presence of a solvent. Examples describe the preparation of 2 - methylbuten - 2 - ol - 4, buten - 2 - ol - 4 (crotyl alcohol), 2 - methylbuten - 2 - ol - 4- acetate (penyl acetate), 1,4 - dimethylcyclohexen - 1 - ol 3 and 2 - methyl - 4 - acetoxy- 2-buten-l-al. |
