公开(公告)号：DE3638489A1

公开(公告)日：1988-05-19

申请号：DE3638489

申请日：1986-11-11

Applicant: BASF AG

Inventor： MARTIN HANS-DIETER PROF DR ,  KRAMME ROLAND DIPL CHEM ,  WEIMANN RALF THOMAS DIPL CHEM ,  NEUMANN PETER DR

IPC: C07B61/00 ,  C07C45/00 ,  C07C45/29 ,  C07C45/51 ,  C07C45/67 ,  C07C45/72 ,  C07C45/81 ,  C07C49/203 ,  C07C49/217 ,  C07C49/242 ,  C07C49/553 ,  C07C49/557 ,  C07C49/573 ,  C07C49/794 ,  C07C49/84 ,  C07C67/00 ,  C08F16/36

Abstract: Vinylglyoxal derivatives of the general formula I (I) where R is straight-chain or branched alkyl or alkenyl, cycloalkyl or unsubstituted or substituted phenyl, are prepared by a process in which bicyclo[2.2.1]hept-5-enecarbaldehyde of the formula V (V) is either (a) subjected to autocondensation with formation of a compound of the formula VII (VII) or (b) reacted with a compound of the general formula II R-CH=O (II) where R has the above meanings, with formation of a mixture of the compounds of the general formulae VIII (a) and (b) (VIIIa) (VIIIb) where R is as defined above, in the presence of a catalyst, and the compound of the formula VII or the compounds of the formulae VIII (a) and (b) is or are oxidized to the corresponding dicarbonyl compounds, after which gas-phase pyrolysis is carried out at from 500 DEG to 700 DEG C. and under reduced pressure, in particular less than 10-1 mbar, and, if desired, the resulting compound of the general formula I is further purified. These compounds can be used, for example, as monomer components in polymeric systems.