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US 4,059,594 AGranted
Stereospecific process for production of c-5-aralkoxy-r-2-substituted-5-alkyl-1,3-dioxanes and intermediates
AssigneeFMC Corporation
InventorMarvin Joseph Konz
Life of this patent
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Abstract
Production of c-5-aralkoxy-r-2-substituted-5-alkyl-1,3-dioxanes by epoxidizing the double bond of a 2-substituted-5-alkylidene-1,3-dioxane to form a cis epoxide, hydrogenolyzing said epoxide to form a 2-substituted-5-alkyl-5-hydroxy-1,3-dioxane in which there is a cis relationship between the 5-hydroxy and the 2-substituent, and etherifying said hydroxydioxane with an aralkyl halide.
Claims4
A hydroxy-1,3-dioxane of the formula:
- ##STR4## in which R' is hydrogen or lower alkyl.
A hydroxy-1,3-dioxane of the formula:
- ##STR5## in which R' is hydrogen or lower alkyl, at least 60% of said hydroxy-1,3-dioxane being in the form in which there is a cis-relationship between the 5-hydroxy and the 2-ethyl.
An epoxy-1,3-dioxane of the formula:
- ##STR6## in which at least 60% of said epoxy-1,3-dioxane is in the form in which there is a cis-relationship between the epoxide oxygen and the 2-chloromethyl.
Dependencies are inferred from the claim text.