Method for producing β-ketoenol esters

Details Method for producing β-ketoenol esters Method for producing β-ketoenol esters

2005-06-07

2005-06-07

Saeed, Kamal (Department: 1626)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C560S106000, C560S113000

Reexamination Certificate

active

06903221

ABSTRACT:
The invention relates to a method for producing β-ketoenol esters of the general formula (Ia) or (Ib), wherein Ar, Raand Rbare defined as in claim1. The inventive method is characterized by reacting an arylhalogenide of the general formula (II) with a 1,3-diketone of the general formula (III) or the tautomers thereof in a carbon monoxide atmosphere in the presence of an alkali and a catalyst that contains at least one transition metal of group VIII of the periodic system

REFERENCES:
patent: 5744425 (1998-04-01), Plath et al.
patent: 6004903 (1999-12-01), Von Deyn et al.
Tetrahedron Letters, vol. 37, No. 7, 100-1010, Montes et al.
Tetrahedron Letters, vol. 31, No. 20, 2841-2844,1990, Shimoyama et al.

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