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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% ...
Nitroethane is an organic compound having the chemical formula C 2 H 5 NO 2. Similar in many regards to nitromethane , nitroethane is an oily liquid at standard temperature and pressure. Pure nitroethane is colorless and has a fruity odor.
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 ...
A neutralization reaction is a type of double replacement reaction. A neutralization reaction occurs when an acid reacts with an equal amount of a base. This reaction usually produces a salt. One example, hydrochloric acid reacts with disodium iron tetracarbonyl to produce the iron dihydride: 2 HCl + Na 2 Fe(CO) 4 → 2 NaCl + H 2 Fe(CO) 4
In the lab, phenyl-2-nitropropene is produced by the reaction of benzaldehyde and nitroethane in the presence of a basic catalyst like n-butylamine.The reaction is a nitroaldol reaction, and is a variant of a Knoevenagel condensation reaction, which is one of a broader class of reactions called Henry condensations, or simply Henry reactions.
It is an ice cream with vanilla flavor and nougat cream filling (16%), cocoa-based fat icing (16%) with white nougat (2%) and rusk pieces (2%), similar to Nogger. [ 7 ] Cremissimo Nogger Choc – variation of Nogger Choc sold under the Cremissimo brand (a German subsidiary brand of Langnese, [ 8 ] itself one of many Unilever brands ) in one ...
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Neapolitan ice cream was the first ice cream recipe to combine three flavors. [3] The first recorded recipe was created by head chef of the royal Prussian household Louis Ferdinand Jungius in 1839, who dedicated the recipe to the nobleman, Fürst Pückler. [4] The German name for Neapolitan ice cream is Fürst-Pückler-Eis.