Benzo 1,3 dioxin derivatives

C - Chemistry – Metallurgy – 07 – D

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260/351, 260/304

C07D 319/08 (2006.01)

Patent

CA 1086744

ABSTRACT OF THE DISCLOSURE Processes for the manufacture of benzo [1,3] dioxin derivatives of the formula:-- Image wherein X and Y are each a 2,2,2-trichloroethylidene radical or a dichlorovinylidene radical; and R1 - R4 are variously selected from hydrogen, chlorine amino, nitro, acetamido, ammonium sulphonato, carbamoyl, carboxy, chloroformyl, cyano,ethoxy carbonyl, phenylsulphamoyl, sulphamoyl, sulpho or 2,2,2-trichloro-1-hydroxy- ethylcarbamoyl. The benzo [1,3] dioxin derivatives are of use in animal husbandry to improve animal rate of growth or feed efficiency.

334035

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