Julius Arnold Koch | |
|---|---|
| Born | (1864-08-15)15 August 1864 |
| Died | 10 February 1956(1956-02-10) (aged 91) |
| Known for | Gattermann-Koch reaction |
| Scientific career | |
| Institutions | University of Pittsburgh |

Julius Arnold Koch (August 15, 1864 – February 2, 1956) was an American chemist who was born in theFree Hanseatic City of Bremen. Koch graduated from theUniversity of Pittsburgh in 1884. He was the firstdean of theUniversity of Pittsburgh School of Pharmacy and held this position until his 1932 retirement. In 1897, he discovered, together withLudwig Gattermann, theGattermann-Koch reaction—a method of synthesis ofbenzaldehyde using carbon monoxide.[1] He agreed to accept the status ofdean only if the school's "sessions [were] changed from evening to the daytime."[2]