The acetal produced when ethanol adds to propanone is a molecule that can be synthesized by many different methods. The first way it was synthesized in the lab and still, one of the most popular ways today is treating propanone with anhydrous hydrazine (NH2N2H). This reaction produces a mixture of products including ethylidene cyclopropane carboxylic acid, diethyl ketone, and 2-ethoxy-3-ethoxypropanal.
A second synthesis method for this compound involves using potassium tert butoxide (KOBu) as a base. In this case, the acetic acid from the starting material reacts with tert-butyl alcohol to produce the desired acetal as well as a second product called erythritol.
The final method of synthesis is one that does not involve an oxidizing agent such as hydrazine but rather relies on protonation reactions with triethylamine (EtNH). This reaction produces ethylene ketal, erythritol, and the desired acetal.
A brief overview of the synthesis methods for this compound is listed below with further information on each method available in the table at right.
Name of Synthesis Method Process Involved Description Triethylamine or ethyl bromide EtNH or BrCHBr Base protonation reaction Produces ethanol ketals such as ethylene ketal Propanone is reacted with hydrazoic acid NHNO Requires a strong oxidizing agent Propagating addition reactions produce cyclopropenes Diethyl anhydride ESPN
A. Ethylene ketal is produced when triethylamine or ethyl bromide reacts with propanone in the presence of a base, such as sodium methoxide in methanol.
B. The protonation reaction requires EtNH and BrCHBr equivalents for each molecule of propanone reacted to produce ethanol ketals like ethylene ketal. These reactions can be carried out at room temperature without the use of an oxidizing agent but require strong bases such as NaOH, KOH, LiHCCFgNaClOor TFA (trifluoroacetic acid).
C. Propagating addition reactions are used to synthesize cyclopropenes by successive use of aldehydes. Diethyl anhydride (DEA), for example, reacts with propanone to produce cyclopropene-aldehyde adducts that can be reduced to the corresponding alkanes by hydrogenation or hydrolysis.
D. Diallyl ether is produced when propanone and allyl bromide react in ethylene glycol at 100 °C under atmospheric pressure conditions. The reaction proceeds via nucleophilic addition of water across the double bond followed by elimination reactions from alcohol intermediates as shown below:
F. The reaction of propanone with isopropyl alcohol proceeds by the formation of an imine, which reacts further to form a hemiacetal and eventually give dioxane as shown below:
G. Propiophenones can be generated from propiolic acid via a conventional sequence of reductions and hydrogenation reactions shown below
H.Propiophenones can be generated from propanol via a conventional sequence of reductions and hydrogenation reactions shown below
I. Propiolic acid is the starting material for both approaches to synthesize these compounds, which are important in the production of solvents such as tetrahydrofuran (THF).
J. The reaction between ethanolamine and acetaldehyde proceeds by an addition-elimination mechanism shown below:
draw the acetal produced when ethanol adds to propanone
overview and information about it
G. Propiophenones can be generated from propiolic acid via a conventional sequence of reductions and hydrogenation reactions shown below. G is very important because they are good solvents for organic synthesis like THF, but H & I are just as important because they produce them in large quantities during their production process.
H.Propiophenones can be generated from propanol via a conventional sequence of reductions and hydrogenation reactions shown below.
I.Propiophenones can be generated from propanoic acid via a conventional sequence of reductions and hydrogenation reactions shown below, but I is not as important because it produces them in small quantities during its production process.
Overview:
Propiolic acid can go through different reduction methods to produce proplyphenones
The acetal produced when ethanol adds to propanone is the most common product that has been found out of many possible products
Information:
The acetal produced when ethanol adds to propanone is an organic compound with the chemical formula COCH=O.
This product can be found in a lot of different products because it has been used as a stabilizer, solvent, and plasticizer.
The main use for this compound is in polymers that have too much branching of polymer chains laying on top of each other which causes instability. Adding these compounds helps stabilize these molecules making them more structurally sound so they do not fall apart during production processes like extrusion blow molding and vacuum forming. This process also makes the material flexible again after it was originally made rigid by adding another molecule called methyl terephthalate (MTP). MTP
