Method for selectively guiding and limiting the reactions of hydroxyl compounds
AssigneeSuomen Sokeri Osakeyhtio
InventorEero Sakari Avela
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Abstract
The present invention relates to a method for producing, from a hydroxyl compound, a sequence of metal derivatives, which are subsequently made to react selectively for a certain purpose. The present invention relates to a method for selectively guiding reactions with polyhydroxyl compounds so as to occur at a predetermined hydroxyl group or groups, by carrying out said reactions over complexes of polyvalent metals and wherein the recovery of the parent compounds of the reaction products is achieved by adding water to the mixture after the reaction solvent is distilled off.
Claims17
A process for producing derivatives of hydroxyl compounds which have at least two hydroxyl groups or a hydroxyl group and at least one additional functional group, which is capable of forming polyvalent metal complexes, which comprises:
- a. forming a metal complex by reacting said hydroxyl or functional groups with a polyvalent metal compound, said reaction occurring in completely anhydrous conditions to form a metal complexed compound;
- b. subjecting the metal complexed compound to one or more further reactions selected from the group consisting of substitutions, addition, elimination, oxidation and reduction, which are selectively guided or limited by the presence of said metal complex, which acts either as a blocking group or as a guiding group, said further reactions also occurring in completely anhydrous conditions;
- and
- c. removing the metal complex to provide the desired reaction product.
A method of using polyvalent metal complexes of hydroxyl compounds or compounds which have a hydroxyl group and at least one additional functional group as starting materials for subsequent selective reactions, which occur in anhydrous conditions, to yield derivatives of the hydroxyl compounds upon removal of the metal complexes.
Dependencies are inferred from the claim text.