Wilhelm Ostwald Para Além Do Antiatomismo

Abstract

WILHELM OSTWALD BEYOND ANTIATOMISM. The Baltic German chemist Wilhelm Ostwald (1853-1932) had his scientific prestige eclipsed in the history of chemistry due to his rejection to atomic theory, which suggests the permanence of the whig interpretation on history of chemistry in the narratives about him. In this paper, we intend to present elements on Ostwald’s biography far from his role in the atomic controversy from the 19th century, as for example his efforts for the popularization of physical chemistry; his role as a teacher and a textbook writer, and his role as a chemical researcher, being responsible for relevant studies on chemical affinity and catalysis, for example. Finally, we conclude this paper defending that Ostwald’s trajectory cannot be neglected for those interested in history of science.

Continuous-Flow Hofmann Rearrangement Using Trichloroisocyanuric Acid for the Preparation of 2-Benzoxazolinone

“…The white solid cyanuric acid could either be safely disposed as it slowly degrades (biodegradable) or recovered for reuse. TCCA has widely been described as an efficient chlorinating agent for ketones, alkenes, acids, esters, arenes, heterocycles, imides, and amides for the synthesis of α-chloro ketones, esters, chlorohydrins, N- chloroamides, N- chloroimides, and chloro-substituted arenes or heterocycles. ,,− It has also found value in converting carboxylic acids into acid chlorides when coupled with strong Lewis bases such as triphenylphosphine to avoid the use of noxious reagents such POCl 3 , PCl 5 , and SOCl 2 . − Recently, it has been employed as an alternative and more selective agent for the halogenation of methane to chloromethane. − …”