Jakob Meisenheimer
Encyclopedia
Jakob Meisenheimer was a German
chemist
. He made numerous contributions to organic chemistry
, the most famous being his proposed structure for a group of compounds now named Meisenheimer complex
. He also proposed the mechanism of the Beckmann rearrangement
. Later in his career, he reported the synthesis of the pyridine-N-oxide
.
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...
chemist
Chemist
A chemist is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties such as density and acidity. Chemists carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms...
. He made numerous contributions to organic chemistry
Organic chemistry
Organic chemistry is a subdiscipline within chemistry involving the scientific study of the structure, properties, composition, reactions, and preparation of carbon-based compounds, hydrocarbons, and their derivatives...
, the most famous being his proposed structure for a group of compounds now named Meisenheimer complex
Meisenheimer complex
A Meisenheimer complex or Jackson-Meisenheimer complex in organic chemistry is a 1:1 reaction adduct between an arene carrying electron withdrawing groups and nucleophile...
. He also proposed the mechanism of the Beckmann rearrangement
Beckmann rearrangement
The Beckmann rearrangement, named after the German chemist Ernst Otto Beckmann , is an acid-catalyzed rearrangement of an oxime to an amide...
. Later in his career, he reported the synthesis of the pyridine-N-oxide
Pyridine-N-oxide
Pyridine-N-oxide is the heterocyclic compound with the formula C5H5NO. This colourless, hygroscopic solid is the product of the oxidation of pyridine. It was originally prepared using peracids as the oxidising agent. The molecule is planar. The compound is used infrequently as an oxidizing...
.