Its 1st edition was published in German by Fritz Ullmann in 1914. The 4th edition, published 1972 to 1984, already contained 25 volumes. The 5th edition, published 1985 to 1996, was the first version available in English. In 1997, the first online version was published. 2014 marked its centenary. Download Product Flyer is to download PDF in new tab. This is a dummy description. Description ULLMANN'S is built from generations of expertise. Since the first edition was published almost 100 years ago, ULLMANN'S has established itself internationally as the household name for industrial chemists and chemical engineers. Ullmann's Encyclopedia of Industrial Chemistry is a major reference work related to industrial chemistryby chemist Fritz Ullmann. [1][2]Its 1st edition was published in German by Fritz Ullmann in 1914. [3][4]The 4th edition, published 1972 to 1984, already contained 25 volumes.[4] Its 1st edition was published in German by Fritz Ullmann in 1914. The 4th edition, published 1972 to 1984, already contained 25 volumes. The 5th edition, published 1985 to 1996, was the first version available in English. In 1997, the first online version was published. 2014 marked its centenary. The 7th print edition of the Ullmann's Encyclopedia offers 1050 articles in A - Z order, contained in 39 hardbound volumes, plus an index volume. It covers the following main topics: Agrochemicals (19 Articles) Analytical Techniques (52 Articles) Biochemistry & Biotechnology (33 Articles) Chemical Reactions (18 Articles) Dyes and Pigments (46 Abstract. In recent decades, organic isocyanates and isothiocyanates have been often applied as reactive intermediates in research syntheses or manufacturing routes of many agrochemicals. These heterocumulenes allowed the installation of crucial carboxylic functions, such as carbamates, ureas, and semicarbazones, but have also been used for the A straightforward method for the formation of diaryl ethers is the Cu-catalyzed coupling of aryl halides with phenols, first reported by Fritz Ullmann in 1903 [8-9].However, the classical protocol suffers from considerable limitations due to the use of stoichiometric or superstoichiometric amounts of copper powder and typically requires high reaction temperatures (≈200 °C), thus Phenoxymandelonitrile is obtained by Ullmann coupling of potassium phenoxide and m-bromobenzaldehyde, followed by reaction with hydrogen cyanide. In 1980, Jacques J. Martel was the first to succeeded in reacting the cyanohydrin as its racemic mixture with (1 R )- cis -caronaldehyde hemiacetal and separating the ( S )-lactol ether by chromatography. Copper salts are used for this reaction in high temperature.The products are used in pharmaceutical, agrochemical, fine and polymer chemistry [47].Ullmann reaction - shows condensation between aryl halide and amine, phenol or thiophenol to give aryl- amine, -either or -thioether.This is known as Ullmann condensation.