Process of using a soluble magnesium catalyst for preparation of

Details Process of using a soluble magnesium catalyst for preparation of Process of using a soluble magnesium catalyst for preparation of

1998-08-10

2000-02-29

Geist, Gary

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

C07C 6966

Patent

active

060311258

ABSTRACT:
A catalyst and process for preparation of dihydroxy esters from specified hydroxy aldehydes is disclosed. In one embodiment, a catalyst liquid is provided which comprises from 10 percent to 60 percent magnesium salt of a specified alkanoic acid or acids, and from 90 percent to 40 percent of a particular alkanoic acid or acids, the molar ratio of alkanoic acid to magnesium salt being from about 1.5 to 20.3. The catalyst solution or liquid contacts or is contacted with a specified hydroxy aldehyde under suitable reaction conditions to form the desired dihydroxy ester. In another embodiment, dihydroxy esters are derived from specified hydroxy aldehydes by first forming a magnesium catalyst containing liquid by reacting magnesium or magnesium oxide, under suitable conditions, with a suitable alkanoic acid or acids, the acid or acids being provided in excess in specified molar ratios. The magnesium salt-alkanoic acid liquid produced is then employed as a catalyst liquid to convert the respective hydroxy aldehyde under suitable reaction conditions to form the desired dihydroxy ester.

REFERENCES:
patent: 3852335 (1974-12-01), Merger et al.
patent: 3862215 (1975-01-01), Merger et al.
patent: 4851592 (1989-07-01), Morris et al.
patent: 5041621 (1991-08-01), Morris et al.
patent: 5380919 (1995-01-01), Merger et al.

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