PRODUCTION OF 4-OXA-5-HYDROXYPOLYCYCLOALKENONES-3-AND COMPOUNDS OF THAT TYPE

摘要

1478171 4-Oxa-5-hydroxy-polycycloalken-3- ones BASF AG 13 Sept 1974 [14 Sept 1973] 39975/74 Heading C2C The invention comprises compounds (I), when R1 is hydrogen or an aliphatic radical and R2 is an aliphatic or cycloaliphatic radical with the proviso that, when every R1 is hydrogen, R2 is not an unsubstituted methylene radical and the preparation of the above compounds, irrespective of the proviso, by reacting a compound (II), as diene and a compound (III), as dienophile, in a Diels- Alder reaction.