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Von Pechmann was born in Nürnberg, the only son of a doctor, who was also named Hans.The von Pechmanns had distinguished themselves as soldiers; in 1702, von Pechmann's ancestor Martin Günther von Pechmann, a general of artillery in the Bavarian army, had been raised to the rank of a baron of the Holy Roman Empire by Leopold I. [6]
Hans von Drigalski Major Army 28 March 1918 ... Paul Freiherr von Pechmann Oberleutnant Luftstreitkräfte 31 July 1917 ...
Hans von Pechmann: Chemist, renowned for his discovery of diazomethane in 1894. Pechmann condensation and Pechmann pyrazole synthesis. Julius Richard Petri: Bacteriologist who is generally credited with inventing the Petri dish while working as assistant to Robert Koch. Emil Pfeiffer: Discovery of Infectious mononucleosis
1898: Synthesis of polyethylene, the most common plastic, by Hans von Pechmann [159] 1898: First synthesis of purine by Emil Fischer. He had also coined the word in 1884. [160] Early 20th century: Schlenk flask by Wilhelm Schlenk [161] 1900s: Haber process by Carl Bosch and Fritz Haber [133] 1902: Ostwald process by Wilhelm Ostwald [162]
Hans Adolf von Moltke; Ludwig Mond; Franz Mone, Corps Suevia Heidelberg; Hans Much, hygienist, writer; Corps Teutonia Marburg [206] Alfons Mumm von Schwarzenstein (1859–1924), diplomat of the German Empire, successor of the murdered Baron Clemens von Ketteler as ambassador in Beijing in 1900, Corps Hannovera Göttingen [207]
Diazomethane is an organic chemical compound with the formula CH 2 N 2, discovered by German chemist Hans von Pechmann in 1894. It is the simplest diazo compound.In the pure form at room temperature, it is an extremely sensitive explosive yellow gas; thus, it is almost universally used as a solution in diethyl ether.
Pechman or Pechmann is a surname of German origin. Notable people with that name include: Joseph A. Pechman (1918–1989), American economist; Hans von Pechmann (1850–1902), German chemist; Marsha J. Pechman (born 1951), American judge; Matthias Pechmann, East German swimmer
Two German chemists also preceded Schlotterbeck in discovery of the reaction, Hans von Pechmann in 1895 and Viktor Meyer in 1905. [4] [5] The reaction has since been extended to the synthesis of β-keto esters from the condensation between aldehydes and diazo esters. [6] The general reaction scheme is as follows: General Scheme for Buchner Reaction