UA6299A1 - METHOD OF OBTAINING ACRYLIC ACID DERIVATIVES OR THEIR STEREOISOMERS - Google Patents

Abstract

The invention relates to esters of carboxylic acids, in particular to the preparation of acrylic acid derivatives of the formula C6H2XYZ-C [C (O) OR1] = CH-OR2, where R1 and R2 are both methyl; X - in the ortho position with respect to the acrylate group - H, F, Cl, Br, C1-C6-alkyl, phenyl-C1-C4-alkyl, in which the phenyl group is possibly substituted by F3Cl or methoxy, dimethoxymethyl, ethylenedimethoxymethyl, trifluoromethyl, phenoxymethyl, optionally substituted with Cl, pyridylethyl, furanylethyl, thienylethyl, ethoxycarbonylethyl, 2,2-difluoro or 2,2-dichloro-3-phenylcyclopropyl, 2-phenyl-1,2-epoxyethyl, ethenyl, optionally substituted with phenyl, trifluoro, methyl, cyano-, C1-C2-alkoxycarbonyl, benzyloxycarbonyl, acetyl, furyl or benzthiazolyl, ethynyl substituted by phenyl or t-butyl, phenyl, C1-C6-alkoxy-, benzoxazolylmethoxy, benzyloxy-, phenoxy-, possibly substituted by F , Cl, Br, OH-, methyl, trifluoromethyl, formyl. C1-C6-alkoxy-, possibly substituted by F, propenyloxy-, propargyloxy-, acetoxy-, methylsulfonyloxy-, phenyl, phenoxy,: nitro-, amino-, formylamino- or acetylamino-, naphthyloxy-, isobutyryloxy, benzoyloxy-, possibly substituted by t-butyl, benzoyl, possibly substituted by methoxy, C1-C3-alkoxycarbonyl, cyclohexyloxycarbonyl, allyloxycarbonyl, phenoxycarbonyl, in which the phenyl group is possibly substituted by methoxy, nitro, benzoylamino, furoylamino or N-thienylcarbonyl -N-methylamino-, Y - in the ortho-, met- or para- positions with respect to the acrylate group - H, Cl, Br, methyl, phenylethenyl, nitro- or phenoxy-; Z - H, or X and Y, occupying adjacent positions in the phenyl ring, together form a fused benzene ring, possibly substituted by phenyl, fused either naphthalene, benzofuranyl, or benzothienyl ring or a group: or groups X and Z when occupying adjacent positions in the phenyl ring, together form a fused benzene ring, or their stereoisomers. The goal is to develop a method for producing compounds with improved fungicidal and herbicidal properties. The preparation is carried out by the reaction of the corresponding ether ketone with a compound of the formula Ph3P + -CHOR2, where R2 is indicated above.