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14,500 (December 2023) [5] Website. avantorsciences.com. Avantor, Inc. is an American biotechnology, chemicals, and pharmaceuticals company headquartered in Radnor, Pennsylvania. Established in 1904 as J.T. Baker, the company changed its name to Avantor in 2010. Avantor went public in 2019 and is now listed on the New York Stock Exchange under ...
Sodium hexanitritocobaltate (III) is an inorganic compound with the formula Na3[Co (NO2)6]. The anion of this yellow-coloured salt consists of the transition metal nitrite complex [Co (NO2)6]3−. It was a reagent for the qualitative test for potassium and ammonium ions. [ 2 ]
Dimethyl sulfoxide can often be used in place of HMPA as a cosolvent. Both are strong hydrogen bond acceptors, and their oxygen atoms bind metal cations.Other alternatives to HMPA include the N,N′-tetraalkylureas DMPU (dimethylpropyleneurea) [10] [11] or DMI (1,3-dimethyl-2-imidazolidinone). [12]
Enantioselective ketone reductions convert prochiral ketones into chiral, non-racemic alcohols and are used heavily for the synthesis of stereodefined alcohols. [1] Carbonyl reduction, the net addition of H 2 across a carbon-oxygen double bond, is an important way to prepare alcohols. Stoichiometric reducing agents to accomplish this task ...
Carbonyl reduction. Oxidation ladders such as this one are used to illustrate sequences of carbonyls which can be interconverted through oxidations or reductions. In organic chemistry, carbonyl reduction is the conversion of any carbonyl group, usually to an alcohol. It is a common transformation that is practiced in many ways. [1]
RXNO:0000226. The Wolff–Kishner reduction is a reaction used in organic chemistry to convert carbonyl functionalities into methylene groups. [1][2] In the context of complex molecule synthesis, it is most frequently employed to remove a carbonyl group after it has served its synthetic purpose of activating an intermediate in a preceding step.
Mechanism. A defining feature of the group transfer reaction is that it is a concerted reaction, in which a bond is broken and formed in one step. The concerted reaction occurs due to the orbital overlap between the alkene and the allylic enophile. [2] The electrons in the highest occupied molecular orbital (HOMO) of the ene are transferred to ...
Kumada coupling. In organic chemistry, the Kumada coupling is a type of cross coupling reaction, useful for generating carbon–carbon bonds by the reaction of a Grignard reagent and an organic halide. The procedure uses transition metal catalysts, typically nickel or palladium, to couple a combination of two alkyl, aryl or vinyl groups.
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