108.
    发明专利
    未知

    公开(公告)号:DE3500057A1

    公开(公告)日:1986-07-03

    申请号:DE3500057

    申请日:1985-01-03

    Applicant: BASF AG

    Abstract: Novel disubstituted bicyclo[2.2.1]heptanes of the general formula I (I) where R1 is C1-C3-alkyl, R2 is C1-C8-alkyl or-alkenyl, R3 and R4 together are =O, =CH-CN, =CH-CO-OCH3 or =CH-CO-OC2H5, or R3 is hydrogen, -CH3, -CH=CH2 or -C 3BOND CH when R4 is -OH or -O-CO-CH3, or R3 is H when R4 is -CH2-CO-OCH3, -CH2-CO-OC2H5 or -CH2-C 3BOND N and one or both of the dashed lines may be a further bond, are obtained by subjecting cyclopentadiene to a Diels-Alder reaction with an unsaturated ketone, this reaction being catalyzed by a Lewis acid, and then subjecting the compound of the formula Ia (Ia) initially formed to a reduction, a Grignard reaction or a reaction with diethylphosphonoacetonitrile or ethyl phosphonoacetate and NaH. They can be used as scents and/or aromas or as intermediates for scents.

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