C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/328.2, 260/3
C07D 307/40 (2006.01) C07D 307/46 (2006.01) C07D 333/06 (2006.01) C07D 333/22 (2006.01)
Patent
CA 1095526
ABSTRACT OF THE DISCLOSURE The invention provides a process for the preparation of 4-keto-phenoxyacetic acids, their reduced derivatives and their oximes, as well as their pharmaceutically acceptable alkali or amine addition salts, the compounds being of the formula: Image in which A represents 0 to 5. one of Z1 and Z2 represents H and the other OH or Z1 and Z2 taken together represent an oxygen atom or the group NOH, and X1 and X2 are the same or different and each represents a hydrogen or a halogen atom, or a methyl group, with the proviso that the benzene nucleus is never sub- stituted by two halogen atoms in ortho-position with respect to one another.
270210
Bessin Pierre A.r.
Bonnet Jacqueline S.
Cariou Bernard J.m.
Laforest Jacqueline S.
Thuillier Germaine
Fetherstonhaugh & Co.
Rolland (albert) S.a.
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