polyphosphoric acid
11polyphosphate — noun a salt or ester of polyphosphoric acid (Freq. 6) • Hypernyms: ↑salt * * * |pälē, lə̇+ noun Etymology: poly + phosphate : a salt or ester of a polyphosphoric acid see sodium tripolyphosphate * * * polyphosphate to polyphote: see …
12Beckmann rearrangement — The Beckmann rearrangement, named after the German chemist Ernst Otto Beckmann (1853–1923), is an acid catalyzed rearrangement of an oxime to an amide. [cite journal author= E. Beckmann title = Zur Kenntniss der Isonitrosoverbindungen journal =… …
13Fischer indole synthesis — The Fischer indole synthesis is a chemical reaction that produces the aromatic heterocycle indole from a (substituted) phenylhydrazine and an aldehyde or ketone under acidic conditions. [Fischer, E.; Jourdan, F. Ber. 1883, 16 , 2241.] [Fischer, E …
14Химические свойства спиртов — Химические свойства спиртов  это химические реакции спиртов во взаимодействии с другими веществами. Они определяются в основном наличием гидроксильной группы и строением углеводородной цепи, а также их взаимным влиянием: Чем больше… …
15Knorr quinoline synthesis — The Knorr quinoline synthesis is an intramolecular organic reaction converting a β ketoanilide to a 2 hydroxyquinoline using sulfuric acid. This reaction was first described by Ludwig Knorr (1859 1921) in 1886 [ Synthetische Versuche mit dem… …
16Bernthsen acridine synthesis — The Bernthsen acridine synthesis is the chemical reaction of a diarylamine heated with a carboxylic acid (or acid anhydride) and zinc chloride to form a 9 substituted acridine. [Bernthsen, A.; Ann. 1878, 192 , 1.] [Bernthsen, A.; Ann. 1884, 224 …
17PPA — palpation, percussion, auscultation; pepsin A; phenylpropanolamine; phenyl pyruvic acid; Pittsburgh pneumonia agent; plasmid profile analysis; polyphosphoric acid; positive predictive accuracy; posterior margin of pulmonary artery; posterior… …
18PPA — • palpation, percussion, auscultation; • pepsin A; • phenylpropanolamine; • phenyl pyruvic acid; • Pittsburgh pneumonia agent; • plasmid profile analysis; • polyphosphoric acid; • positive predictive accuracy; • posterior margin of pulmonary… …
19Bischler-Napieralski reaction — The Bischler Napieralski reaction is a chemical reaction that dehydrates an N acyl β arylethyl amines into the corresponding heterocycle. The reaction is named after August Bischler and Bernard Napieralski, who discovered the reaction at the… …
20Donald E. Pearson — Donald Emanuel Pearson Doc , (June 21, 1914 in Madison, Wisconsin – April 14, 2004 in Nashville, Tennessee) was an American chemist and scientific researcher. He was a professor of chemistry at Vanderbilt University from 1946 until his retirement …
