Patent · US Expired

Process for the preparation of ethylenic halogenoacetals

US4503239A · kind A · utility

1Cited by
4References
7Claims
0Family size

Assignee

Inventor

Key dates

Filing dateDec 16, 1982
Grant dateMar 5, 1985
Priority date—
Expiry dateDec 16, 2002

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07C47/24
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.