2-Nitroresorcinol → 2-Aminoresorcinol

A suspension of 2-nitroresorcinol (4.995 g) and platinum (IV) oxide (356 mg) in ethanol (90 ml) was hydrogenated, at room temperature, at 100 p.s.i. for 4 hours. The reaction mixture was filtered through celite, the filter cake washed with methanol (50 ml), and the combined filtrate evaporated in-vacuo to yield a brown solid. The solid was suspended in dichloromethane (100 ml) and evaporated to dryness to yield the title compound (3.83 g, 95%) as a brown solid.

1. customwas hydrogenated, at room temperature, at 100 p.s.i
2. filtrationThe reaction mixture was filtered through celite
3. washthe filter cake washed with methanol (50 ml)
4. customthe combined filtrate evaporated in-vacuo
5. customto yield a brown solid
6. customevaporated to dryness

ORD record

ord-75a64971048643eb81e1d6b81fa57a58

Source dataset

uspto-grants-2002_04

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06372770B1