Process for the preparation of ethylenic halogenoacetals

Details Process for the preparation of ethylenic halogenoacetals Process for the preparation of ethylenic halogenoacetals

1982-12-16

1985-03-05

Love, Ethel G.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549455, 568459, 568596, C07D31906

Patent

active

045032394

ABSTRACT:
Process for the preparation of halogenoacetals of the general formula: ##STR1## wherein X represents chlorine or bromine, the symbols R each represent a linear or branched alkyl radical (1 to 6 carbon atoms) or together form a linear or branched alkylene radical (2 to 6 carbon atoms), and the symbols R.sub.1 and R.sub.2, which are identical or different, represent a hydrogen atom or an alkyl radical (1 to 6 carbon atoms), by reaction of chlorine or bromine with a .beta.,.gamma.-ethylenic aldehyde, in the presence of a tertiary amide, followed by reaction with a primary or secondary aliphatic alcohol, a diol (preferably a glycol) or an alkyl orthoformate.

REFERENCES:
patent: 3160636 (1964-12-01), Schmerling
patent: 3760004 (1973-09-01), Freyschlag et al.
patent: 4100201 (1978-07-01), Decor
patent: 4335047 (1982-06-01), Jaedicke et al.

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