# Gattermann reaction

> in gatterman reaction(a modification of sandmeyer reaction) the catalyst cu powder in the presence of halogen acid (Hcl or Hbr)

**Wikidata**: [Q903064](https://www.wikidata.org/wiki/Q903064)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Gattermann_reaction)  
**Source**: https://4ort.xyz/entity/gattermann-reaction