| 摘要 |
<p>Process for manufacturing cis-bicyclo[3.3.0]octane-2-aldehydes of formula (I), in which R1 and R2 jointly represent the double-bound residue -O-X-O-, with X as straight or branched-chain alkylene with 1-7 C-atoms or R1 and R2 accordingly represent the residue OR with R as a straight or branched-chain alkyl with 1-7 C atoms and R3 represents hydrogen, a saturated alkyl residue with 1-7 C atoms, an aralkyl residu with 7-10 C atoms, a tetrahydropyranyl residue, a trialkylsilyl residue with 1-6 C atoms in the alkyl whereby alkyl also can be substituted by phenyl, a dialkylphenylsilyl residue or alkyldiphenylsilyl residue with 1-16 C atoms in the alkyl, characterized by the fact that the diastereomeric amides of formula (II) are separated, whereby in said formula R1, R2 and R3 have the stated meanings, and in that the enantiomerically pure amide of formula (II) is reduced.</p> |
