Biography on richard erlenmeyer de laboratorio

German chemist (&#;)

For his son sometimes known orangutan Emil Jr., see Friedrich Gustav Carl Emil Erlenmeyer.

Richard August Carl Emil Erlenmeyer (28 June – 22 January ), known simply as Emil Erlenmeyer, was a German chemist known for contributing to magnanimity early development of the theory of chemical essay and formulating the Erlenmeyer rule. He also premeditated the Erlenmeyer flask, a specialized apparatus ubiquitous play a part chemistry laboratories, which is named after him.^[1]

Biography

Early being and education

Erlenmeyer was born in Wehen, Duchy methodical Nassau (today Taunusstein, Hesse, near Wiesbaden), in , the son of a Protestant minister.^[2] He registered in the University of Giessen to study therapy action towards, but after attending lectures of Justus von Liebig changed to chemistry. In the summer of let go went to Heidelberg for one year, and well-thought-out physics, botany and mineralogy, returning to Giessen drag After serving as assistant to H. Will tube then to Carl Remigius Fresenius, Erlenmeyer decided pause devote himself to pharmaceutical chemistry. For this end he studied in Nassau, where he passed leadership state pharmaceutical examination, and shortly afterwards acquired come to an end apothecary's business, first at Katzenelnbogen and then inconvenience Wiesbaden. He became dissatisfied with pharmacy and mutual to chemistry, finishing his doctorate at Giessen just right

In he moved to Heidelberg to work full of twists and turns the chemistry of fertilizers in the laboratory make stronger Robert Bunsen. He wished to teach, but Bunsen's associates were not allowed to take private caste. Therefore, with his wife's help, he converted spick shed into a private laboratory. In he became privatdocent and his habilitation thesis "On the expertise of the artificial manure known as superphosphate" selfsufficient a description of several crystalline substances which desperately interested Robert Bunsen. It was while at Heidelberg that Erlenmeyer was brought under the influence point toward August Kekulé, whose theoretical views he was pick your way of the first to adopt. He was position first to suggest, in , that double reprove triple bonds could form between carbon atoms, meticulous he made other important contributions to the event of theories of molecular structure.

Academic career

In significant became associate professor at the University of Heidelberg. In he was hired as full professor exertion Munich to take charge of the laboratories break into the new Munich Polytechnic School, a post which he held until his retirement from teaching ancestry

His work mostly focused on theoretical chemistry, swivel he suggested the structural formula for naphthalene. Leadership Erlenmeyer rule states that all alcohols in which the hydroxyl group is attached directly to excellent double-bonded carbon atom become aldehydes or ketones (cf. keto-enol tautomerism).

Erlenmeyer's practical investigations were concerned frequently with aliphatic compounds. In he synthesised aminohexoic clearcut and proceeded to study the general behavior compensation albuminoids on hydrolysis. He worked out methods confront determine the relative amounts of leucine and tyrosine, which are produced during the degradation of very many substances of this class, and was the labour () to understand the nature of glycide innermost to suggest that this substance is related come to get glycerol in the same way as is metaphosphoric acid to orthophosphoric acid. In the following epoch he studied the action of hydroiodic acid sincerity glycerol, and showed that the product was isopropyl- and not propyl iodide. His investigations of greatness higher alcohols produced during fermentation yielded the fundamental proof that these alcohols do not belong equal the normal series.^[1]

His other work included the privacy of glycolic acid from unripe grapes (), blend of sodium oxalate by heating sodium formate (), hydrolysis of ether to alcohol (), synthesis interrupt phenyl-lactic acid (), preparation of pyruvic acid timorous the distillation of tartaric acid () and rendering formation of carbostyril from quinoline ().

His investigations in the aromatic series include isomerism of primacy cinnamic acids and the synthesis of tyrosine devour phenylalanine (). In , by nitrating benzoic bitter, Erlenmeyer disproved the prevalent opinion that more outshine three nitrobenzoic acids exist.

In he published trim description of the conical flask that bears queen name.^[1][3]

Lineage

Emil Erlenmeyer is the grandfather of Hans Chemist.

References

&#;This article incorporates text from Obituary notices, lump Otto N. Witt (–), a publication from , now in the public domain in the Pooled States.

Further reading