Process for the preparation of .omega.,.omega.-dialkoxycarboxyli

Details Process for the preparation of .omega.,.omega.-dialkoxycarboxyli Process for the preparation of .omega.,.omega.-dialkoxycarboxyli

1978-03-06

1979-02-06

Niebling, John

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260404, 260561B, 560186, C11C 302, C09F 500

Patent

active

041384180

ABSTRACT:
.omega.,.omega.-Dialkoxycarboxylic acid derivatives I (amides and esters) are prepared by heating .omega.-alkoxylactams II with hydrogen halide in an alcohol. When using only a catalytical quantity of hydrogen halide, there are obtained the amides, when using a quantity of hydrogen halide which is at least about equimolar, there are obtained the esters of the corresponding .omega.,.omega.-dialkoxycarboxylic acids. Since the compounds I are acetals, they may be readily converted into the corresponding .omega.-formyl compounds. Both the acetals I and the corresponding .omega.-formyl compounds are valuable intermediates for the synthesis of for example prostaglandins, sexual attractants and antioxidants.

REFERENCES:
patent: 3535351 (1970-10-01), Dorfman et al.
Manly et al. Chem. Absts., vol. 51: 3549f.
Lukes et al., Chem. Absts., vol. 50, No. 7795.
Tsyhina et al., Chem. Absts., vol. 79, No. 5204k.

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