Process for preparing...

Details Process for preparing... Process for preparing...

C - Chemistry, Metallurgy

07

D

260/297

C07D 213/65 (2006.01) C07D 491/04 (2006.01)

Patent

CA 1059518

ABSTRACT OF THE DISCLOSURE The maleic acid salt of 2-phenyl-6-(1-hydroxy-2-butyl- aminoethyl)-4H-pyrido-(3,2-d)-1,3-dioxin, its preparation and use as an intermediate for making 2-hydroxymethyl-3-hydroxy-6-(1- hydroxy-2-t-butylaminoethyl)pyridine an effective bronchodilator.

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