| abstract |
Process for preparing 1,3-dioxane compounds of the formula (See formula I) in which R2 is hydrogen, alkyl, haloalkyl, alkoxyalkyl, cyanoalkyl or phenyl; R2a is hydrogen; and R2a and R2 taken together can represent a divalent polymethylene radical of 2 to 6 carbon atoms, and thus form a spiro structure; R4 is alkyl, haloalkyl, or cyanoalkyl; R5 is hydrogen or alkyl; R6 is hydrogen, alkyl, haloalkyl or cyanoalkyl; Rr is phenyl, furyl, pyridyl, thienyl, or phenyl with one or two non-hydrogen substituents selected from the group consisting of chloro, fluoro, and methyl; and -CCH2-Rr is in a cis relationship to R2 other than hydrogen; preferably characterized in that a substituted 5-hydroxy-1,3-dioxane, of formula: (See formula II) |