Process for preparing cyclopropyl alkyl ketones and 4,5-dihydroa

Details Process for preparing cyclopropyl alkyl ketones and 4,5-dihydroa Process for preparing cyclopropyl alkyl ketones and 4,5-dihydroa

1997-06-25

1998-06-09

Morris, Patricia L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

568314, 568343, 568346, C07C 4554, C07D30778

Patent

active

057636273

ABSTRACT:
The invention relates to a novel process for simultaneously preparing cyclopropyl alkyl ketones and 4,5-dihydroalkylfurans from 3-acyltetrahydrofuran-2-ones in the presence of a metal salt according to the scheme ##STR1## during the reaction, high-boiling poly (ethylene glycol) dialkyl ethers are then used. By introducing the solvent, the metal salt and the 3-acyltetrahydrofuran-2-one in a molar excess to the metal salt, heating the mixture to 160.degree. to 220.degree. C. and adding further 3-acyltetrahydrofuran-2-one, the desired products are obtained in high yields. The metal salt can, moreover, be recovered in a simple manner by washing with water.

REFERENCES:
patent: 5629455 (1997-05-01), Kauthold

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