申请人:Shimizu Takanori
公开号:US20050192444A1
公开(公告)日:2005-09-01
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)
characterized by reducing a nitro group on 2,2-dimethyl 2H-1-benzopyran compound of formula (1)
with hydrazine in the presence of a metal catalyst.
提供一种生产氨基苯并吡喃化合物的方法,该方法产生少量废物,不会影响反应器,并需要简单的工作步骤。具体而言,它是一种通过在存在金属催化剂的情况下使用肼还原式(1)的2,2-二甲基2H-1-苯并吡喃化合物上的硝基团来生产式(2)的氨基苯并吡喃化合物的方法。