Process for the preparation of 2,2 dialkyl-arylidene-cycloalkanones
申请人:Bayer Aktiengesellschaft
公开号:US05663447A1
公开(公告)日:1997-09-02
A particularly advantageous process for the preparation of 2,2-dialkyl-arylidene-cycloalkanones is characterized in that 2-alkyl-arylidene-cycloalkanones are reacted with alkyl halides in the presence of metal hydroxides and tertiary alcohols.
Derivatives of alkyl 3-(substituted or unsubstituted benzylidene)-1-alkyl-2-oxocylopentanecarboxylate of the following formula (I), ##STR1## wherein R.sup.1 and R.sup.2 individually represent a lower alkyl group; X is a halogen atom, a cyano group, an alkyl group, a haloalkyl group, a phenyl group, or a nitro group; and m is an integer of 0 to 5; provided when m is 2 or larger, Xs may be either the same or different. The compounds are useful themselves as an effective ingredient of antifungal compositions, and can be used for intermediates of agriculture chemicals and medicines.
Process for the preparation of arylidene-substituted alkylcycloalkanones
申请人:Bayer Aktiengesellschaft
公开号:US05741937A1
公开(公告)日:1998-04-21
Arylidene-substituted alkylcycloalkanones are prepared from alkyl-substituted cycloalkanones by reaction with aromatic carbonyl compounds in the presence of a basic catalyst and water.