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The reaction has been the subject of several literature reviews. [1] [2] [3] The Nef reaction: 1. Salt of a nitroalkane 3. Ketone 4. Nitrous oxide. The reaction was reported in 1894 by the chemist John Ulric Nef, [4] who treated the sodium salt of nitroethane with sulfuric acid resulting in an 85–89% yield of nitrous oxide and at least 70% ...
Adducts of Sn(N 3) 4 are known with various ancillary ligands. [25] Reactions with SnCl 4 and NaN 3 lead s to the hexaazide Na 2 Sn(N 3) 6. [26] The salt is only slightly water sensitive and deflagrates in a flame test. Azides of Sn(II) exist in the form of salts of [Sn(N 3) 3]-. Like the analogous germanates, they are very sensitive compounds ...
Via condensations like the Henry reaction, nitroethane converts to several compounds of commercial interest.Condensation with 3,4-dimethoxybenzaldehyde affords the precursor to the antihypertensive drug methyldopa; condensation with unsubstituted benzaldehyde yields phenyl-2-nitropropene, a precursor for amphetamine drugs.
In the so-called Ter Meer reaction (1876) named after Edmund ter Meer, [14] the reactant is a 1,1-halonitroalkane: The reaction mechanism is proposed in which in the first slow step a proton is abstracted from nitroalkane 1 to a carbanion 2 followed by protonation to an aci-nitro 3 and finally nucleophilic displacement of chlorine based on an ...
The reaction utilizes benzene as a solvent and proceeds to about 90% yield in 12 hours. [9] Reaction of nitroethylene and aniline. Another example of nitroethylene is from the coupling reaction with a vinyl Grignard reagent and a silyl glyoxalate to form a nitrocylopentanol. This process via a Henry reaction and is highly diastereoselective. [10]
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But a loss to the Yellow Jackets would’ve forced Georgia to beat Texas to earn a playoff bid; the Bulldogs weren’t going to finish in the top 12 of the rankings at 9-4. 6. Ohio State (10-2)
The figure below illustrates one of the commonly accepted models for stereoselection without any modification to the Henry reaction. In this model, stereoselectivity is governed by the size of the R groups in the model (such as a carbon chain), as well as by a transition state that minimizes dipole by orienting the nitro group and carbonyl oxygen anti each other (on opposite sides of the ...