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Aliquat 336 is used as a phase transfer catalyst, [2] including in the catalytic oxidation of cyclohexene to 1,6-hexanedioic acid. [3] This reaction is an example of green chemistry, as it is more environmentally friendly than the traditional method of oxidizing cyclohexanol or cyclohexanone with nitric acid or potassium permanganate, which produce hazardous wastes.
In chemistry, a phase-transfer catalyst or PTC is a catalyst that facilitates the transition of a reactant from one phase into another phase where reaction occurs. Phase-transfer catalysis is a special form of catalysis and can act through homogeneous catalysis or heterogeneous catalysis methods depending on the catalyst used.
In organic chemistry, a cross-coupling reaction is a reaction where two different fragments are joined. Cross-couplings are a subset of the more general coupling reactions. Often cross-coupling reactions require metal catalyst
The Marcusson apparatus, Dean-Stark apparatus, Dean–Stark receiver, distilling trap, or Dean–Stark Head is a piece of laboratory glassware used in synthetic chemistry to collect water [1] [2] (or occasionally other liquid) from a reactor.
The pandemic was certainly a major catalyst for this sea change. It prompted many of us to slow down and stop prioritising busyness above all. ... And then there’s the stark fact that affordable ...
Michael Ochs Archives/Getty Images The late Hollywood icon James Dean would have turned 94 on Saturday, February 8, if his life had not been cut tragically short. Dean became an icon of 1950s ...
The main disadvantage of direct acylation is the unfavorable chemical equilibrium that must be remedied (e.g. by a large excess of one of the reagents), or by the removal of water (e.g. by using Dean–Stark distillation or including a drying agent such as anhydrous salts, [5] molecular sieves, or a large amount of certain acids as catalyst in ...
As I predicted in the Milwaukee Journal Sentinel: They've missed with recent defensive back picks high in the draft, but there aren't many safer bets in this class than Starks. The Georgia safety ...