| 摘要 |
A process by which an aminobenzopyran compound is obtained and which does not yield much wastes, exerts no influence on the reactor, and necessitates a simple post-treatment. It is a process for producing an aminobenzopyran compound represented by the formula (2) characterized by reducing the nitro group of a 2,2-dimethyl-2H-1-benzopyran compound represented by the formula (1) with hydrazine in the presence of a metal catalyst., (1), (2) |
