Raffaele Piria

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Raffaele Piria

Raffaele Michele Rocco Piria (born August 20, 1814 in Scilla , † July 18, 1865 in Turin ) was an Italian doctor and chemist .

Raffaele Piria studied medicine and then chemistry with Jean-Baptiste Dumas in Paris. In 1842 he became a professor of chemistry at the University of Pisa . He took part in the first Italian War of Independence in 1848. In 1856 he followed a call to the University of Turin . He is considered one of the most important chemists in Italy of the 19th century. In 1861 he was elected to the Camera dei deputati and in 1862 appointed senator . He was brother-in-law of General and Senator Enrico Cosenz .

At the beginning of his scientific career he recognized that salicin is a glycoside and was the first to isolate salicylic acid from it . In 1845 he synthesized salicylic acid from salicylaldehyde . He dealt with asparagine and populin , and he also found a new way of preparing naphthylamine sulfonic acids . Independently of Heinrich Limpricht and Johann Wilhelm Ritter, he obtained aldehydes from calcium salts by pyrolysis with calcium formate . He also synthesized sulfur trioxide from sulfur dioxide using platinum-coated pumice stone as a catalyst.

The Piriasche reaction is named after him (1848), the conversion of amino compounds with nitrous acid to alcohols.

literature

  • Entry in Winfried Pötsch u. a. Lexicon of important chemists , Harri Deutsch 1989

Web links

  • Piria, Raffaele. In: Enciclopedie on line. Istituto della Enciclopedia Italiana, Rome.
  • Entry in the Senatori dell'Italia liberale database of the Historical Archives of the Italian Senate

Individual evidence

  1. ↑ Life data from the database of the Italian Senate, the Encycl. Treccani gives 1813 as the year of birth and Pötsch u. a. Lexicon of important chemists 1815
  2. ↑ Piria, Recherches sur la constitution chimique de l'asparagine et de l'acide aspartique, Annales de chimie et de physique, 22, 1848, 160-179
  3. ↑ R. von Piria: About some products of the action of sulphurous ammonia on nitronaphthalene. In: Annals of Chemistry and Pharmacy. 78, 1851, pp. 31-68, doi : 10.1002 / jlac.18510780103 .
personal data
SURNAME Piria, Raffaele
ALTERNATIVE NAMES Piria, Raffaele Michele Rocco (full name)
BRIEF DESCRIPTION Italian doctor, chemist and politician, member of the Camera dei deputati
DATE OF BIRTH August 20, 1814
PLACE OF BIRTH Scilla
DATE OF DEATH July 18, 1865
Place of death Turin