There is provided a method for producing aminobenzopyran compound, which results in little wastes, has no influence on reactors and necessitates a simple work-up procedure. Concretely, it is a method for producing aminobenzopyran compound of formula (2) ##STR00001## characterized by reducing a nitro group on 2,2-dimethyl 2H-1-benzopyran compound of formula (1) ##STR00002## with hydrazine in the presence of a metal catalyst.

 
Web www.patentalert.com

< Partial block polyimide-polysiloxane copolymer, making method, and resin composition comprising the copolymer

> Optimized liquid-phase oxidation

> Methods for producing acetic acid

~ 00591