Method of preparing 1-acetyl-1-chlorocyclopropane

Details Method of preparing 1-acetyl-1-chlorocyclopropane Method of preparing 1-acetyl-1-chlorocyclopropane

2007-06-05

2007-06-05

Oh, Taylor Victor (Department: 1625)

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

Organic compounds

Oxygen containing

C568S303000

Reexamination Certificate

active

10818689

ABSTRACT:
The present invention provides a method of preparing 1-acetyl-1-chlorocyclopropane from 1,3 dichloro-2-pentanone by reaction with base in the presence of a phase transfer catalyst. The reaction may be run in the presence or absence of an organic solvent and in a continuous or batch process.

REFERENCES:
Michael et al , Advanced Organic chemistry, 5th ed., 2001, p. 454-456.
Database CA ′Online! Chemical Abstracts Service, Columbus, Ohio, US; Vinogradov, M.G. et al: “Oxidative addition of 1,3-dicarbonyl compounds to olefins in the presence of the manganese(III) acetate/lithium chloride system and synthesis of functionally substituted cyclopropanes” XP002334791 retrieved from STN Database accession No. 1984:209194 abstract & Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, (2), 375-83 Coden: IASKA6; ISSN: 0002-3353, 1984 & Vinogradov, M.G.; Dolinko, V.I.; Nikishin, G.I.: Bull. Acad. Sci. USSR Div. Chem. Sci. (Engl. Transl.); 33, 1984, pp. 334-341.
Fitjer, Lutz: “1,1-Bifunctional cyclopropanes; convenient synthesis of 1-bromo- 1-chloro- and 1-fluorocyclopropyl methyl ketone” Synthesis, (3), 189-91 CODEN SYNTBF; ISSN: 0039-7881, 1977, XP002334549.

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