The detailed and complete as possible description of plausible or observable pathways leading from reactants to products of a chemical process. This tag should be applied to questions, which seek information on elementary steps of these processes. It may be applied to hypothetical and/or proposed ...

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Another attack in a reaction

Why in the following reaction another double does not get protonated?
1
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1answer
13 views

Synthesis of Diazepam with (2-amino-5-chlorophenyl)(phenyl)methanone

I tried to draw the mechanism of the diazepam synthesis. Question: Do I really get the tertiary amine or does dimethyl sulfate methylate the amine twice?
-3
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0answers
22 views

Will lugols iodine react with L-phenylalanine? [duplicate]

I don't know how chemical reactions work, but the chemical formula for phenylalanine is C9H11NO2 and lugols iodine is the compound Potassium triiodide. Will they react? Will I lose any iodine ...
0
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0answers
27 views

corrosion equation of steel 304 in sulphuric acid [on hold]

I am a pre-university student. I would like to know what happen steel react with sulphuric acid. From what i know the reaction of pure iron with sulphuric acid is: Fe + H2SO4 --> FeSO4 + H2 I suppose ...
3
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1answer
31 views

Migratory aptitude in Baeyer–Villiger reaction

I found a reaction in which we have to find the product: I tried and got to know that it is Baeyer–Villiger reaction but I got confused after seeing the answer, I thought there would be a shift of ...
0
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0answers
40 views

Convert mass-based reaction rate equation to mole-basis

I have the following kinetic scheme describing the conversion of wood to tar and gas products. Wood is considered to be pine with a density of $\rho_\mathrm{w} = 540\; \mathrm{kg/m^3}$, tar is ...
0
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0answers
12 views

Easieast method of air oxidation of octan-2-one to two carboxylic acid? [closed]

im trying to find simplest method to convert methyl hexyl ketone to two carboxylic acid with out using catalyst as i need to apply in industry scale. can anybody help me in this regard
6
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1answer
100 views

Predict the product of reaction of quinone and hydrochloric acid

This is the question: And this is my solution: In the last step, I have tautomerised, and in the second last step, there is no double bond between carbon attached with Cl and OH (just some ...
6
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3answers
347 views

Is sodium borohydride really a better base than an alcohol?

I have learnt that sodium borohydride can reduce aldehydes, ketones and acyl chlorides into alcohols. However, it fails to react with esters or acid anhydrides. On the other hand, alcohols — ...
4
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1answer
24 views

Are all concerted electrophilic addition reactions of alkenes syn?

The Organic Chemistry book I am using (8th edition Carey, et al.) doesn't say it straight out, but I am wondering if it's a universal rule that all concerted electrophilic additions of alkenes are syn....
6
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1answer
144 views

Why are beta-ketoacids better at decarboxylation than gamma or delta?

My book claims that beta-ketoacids and beta-dicarboxylic acids are better at decarboxylating than their gamma and delta counterparts. Why is that? I would assume that since gamma and delta keto-acids ...
4
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1answer
77 views

How much lactose is there in milk (mechanism)?

Iodometric titration is sometimes used to find out how much lactose there is in milk. The overall oxidation reaction is written as follows. $$\ce{C12H22O11 + I2 + 3NaOH ->[\ce{CuSO4}]C12H21O12Na + ...
3
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1answer
123 views

What is the mechanism for the reaction of an organic hydroperoxide with sulfuric acid?

The question asked to react the organic hydroperoxide substrate, $\ce{R-OOH}$, with dilute sulfuric acid, $\ce{H2SO4}$. In the last step, I removed a proton, making it act like a catalyst, along with ...
2
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1answer
44 views

Hydrogenation of alkenes

How many structural isomeric alkenes ($\ce{C_6H_{10}}$) can be hydrogenated to give methylcyclopentane? Would there be three? I drew out what I thought was correct but I just want to confirm that ...
0
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1answer
36 views

Does this reduction mechanism of an diazonium via stannic chloride sense? [closed]

Is this mechanism possible. I didnt find any sources of a mechanism of this specific reaction.
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1answer
31 views

Safe pH levels for blood [closed]

What exactly happens to blood cells when a persons blood is to alkaline? I know that if your pH level goes below 6.8 or above 7.8 you will die. I have read that if you go below 6.8 your cells will ...
-3
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0answers
23 views

What is the basis for Popoff's rule in the oxidation of ketones? [duplicate]

Ketones are relatively much harder to oxidise, but they do undergo oxidation reactions at extreme temperatures. Our teacher also told us about Popoff's rule which says that during oxidation of ...
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0answers
11 views

can PMMA crosslink with vinytrimetoxysilane?

My project is on development of phase change material, which we are using myristic acid as our PCM. We have done the coating on myristic acid with PMMA to avoid acid leaking which may cause corrosion ...
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2answers
91 views

Why cesium considered most reactive element and not flourine? [closed]

Some people say Cesium is most reactive element. I thought it to be flourine as it is the element that reacts with almost all elements (except couple of inert gases). But cesium won't react many of ...
0
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2answers
35 views

Rate determining step

The formation of the cation is the rate-determining step. we can look at this in two ways. Either that a cation is an unstable species and so it will be formed slowly from a stable neutral organic ...
0
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2answers
37 views

Chlorination of toluene in the presence of light

My book mentions a reaction for the preparation of benzaldehyde with toluene in which side chain chlorination of toluene gives benzal chloride, which on hydrolysis gives benzaldehyde. I am very ...
2
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0answers
48 views

Is there wavefunction interference between alternate reaction pathways?

I'll give a specific example to clarify my question. If we look at the approach of chloromethylenecarbene's electron pair to cis-2-butene in the reaction of creating 1-chloro-2,3-dimethylcyclopropane, ...
4
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1answer
78 views

Phenol or ethanol as a nucleophile for ether formation?

If we react phenol with $\ce{C2H5I}$ in $\ce{C2H5O- Na+}$ (excess), $\ce{C2H5OH}$ (anhydrous) solutions . In this reaction why is diethyl ether not formed and the actual product is phenyl ethyl ...
4
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1answer
83 views

Mechanism of acetylene formation from iodoform and silver

My book mentions a synthetic route for turning iodoform into propyne. That conversion was somewhat as follows: The first step is the conversion of iodoform into acetylene with silver. I am usure ...
2
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1answer
36 views

Pinacol pinacolone rearrangement

I was reading the topic alcohol in that I saw a reaction Pinacol pinacolone rearrangement . But I am not able to find the sterochemistry of the reaction . Can anyone please tell me the ...
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1answer
48 views

In a condensation reaction, which of the reactants loses their OH group?

You have Propanoic Acid ($\ce{CH3CH2CO-O-H}$) so an $\ce{OH}$ on the end You have Ethanol ($\ce{CH3CH2-OH}$) so an $\ce{OH}$ on the end When you combine the two for a condensation reaction you have ...
0
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1answer
22 views

Why do coefficients become exponents in the speed equation when dealing with elementary reactions

In school, while studying chemical kinetics, we were learning about the speed law and equation for different chemical reactions. We learned that in general, the exponents of the concentration of ...
4
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2answers
69 views

SN2 with thionyl chlorides

Grignards don't couple with alkyl halides. I know that thionyl chloride reacts with alcohols and other $\ce{-OH}$ group containing molecules to replace the $\ce{-OH}$ with a $\ce{-Cl}$. So we probably ...
0
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0answers
29 views

Does nucleus moved with electron clouds make the chemical bonds cleavage or electron clouds moved with nucleus?

I know the chemicals bond is the overlapping of electron clouds. There is no real bond in molecules. But the electron clouds surround nucleus. Which one "move" first and lead the other to make two ...
0
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1answer
98 views

Is this reaction SN1, SN2, E1, or E2?

In the following question, which I tried to solve, I became confused by which way I should proceed. Here is my thought process: SN1: If Cl detaches and forms a secondary carbocation, then there's no ...
1
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0answers
43 views

Mechanism of polymerization of 4-nitroaniline

Does anyone know the mechanism for/the structure of the product of the explosive polymerization of 4-nitroaniline with concentrated sulfuric acid? My guess is that it is some sort of aromatic ...
3
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2answers
155 views

Does halogenation by PBr3 lead to an inverted product?

$\hspace{4.5cm}$ I think it follows the $\mathrm{S_Ni}$ mechanism and would not lead to Walden inversion, but the answer says otherwise. (the problem didn't indicate the presence of pyridine in the ...
0
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1answer
14 views

Nucleophile in a reaction [closed]

How can we determine that in a compound which atom is a nucleophile in a reaction . I know we see resonance , but I am little confused between electronegativity , formal charge , solvent and size .
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1answer
40 views

Preparation of alcohols from Monosubstituted cyclic ethers [closed]

Can methyl oxirane(epoxide) (a mono substituted 3 membered cyclic ether) form alcohols by reacting it with Grignard reagent? If yes, can you please explain the reaction with mechanism? If no, why?
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1answer
33 views

Ring expansion and carbocation formation

If in a reaction the carbocation is formed outside the ring then why does the ring expansion does not happen as follows:
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1answer
26 views

Haloalkanes and E1, E2 reactions

In an E1 reaction, I understand that the base reacts with the hydrogen of the carbon which is next to the positive charged carbon of the cation (of an haloalkane), because this hydrogen is supposed to ...
0
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0answers
42 views

Na2CO3 + FeBr3 + H2O: Why don't we get some NaHCO3?

$$\ce{3Na2CO3 + 2FeBr3 + 3H2O -> 6NaBr + 2Fe(OH)3 + 3CO2}$$ Why don't we get some $\ce{NaHCO3}$? There is water, and $\ce{NaCO3}$ hyrdolyses to $\ce{NaOH}$ and $\ce{NaHCO3}$ in water. Is it ...
0
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0answers
40 views

The mechanism of boric acid esterification

The starting material is dehydrated borax. We have a hypothetical situation when the concentration of H2SO4 is 100%, is it possible to obtain tetraboric acid via the reaction between borax and the ...
0
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0answers
13 views

Mechanism of thyroid hormone synthesis: iodation and free radical formation

In the synthesis of thyroid hormone, what part of the thyroid peroxidase hormone is specifically responsible for abstracting the free radicals from the aromatic side chains in the iodated tyrosine ...
3
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1answer
49 views

Alkyl halide reaction

In the following the reaction , According to me the product should be compound (A) due to substitution reaction. But the product formed is the compound (B) , what could be the mechanism for the ...
1
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0answers
85 views

Why do NaNO3 + Al + NaOH yield ammonia?

From Russian test problem 4301: $$\ce{3NaNO3 + 8Al + 5NaOH + 18H2O -> 8Na[Al(OH)4] + 3NH3(g)}$$ How does ammonia evolve here? Is it that we get hydrogen gas evolving in the reaction between Al ...
0
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2answers
56 views

Na2CO3 + FeBr3 + H2O: why do we get Fe(OH)3?

$$\ce{3Na2CO3 + 2FeBr3 + 3H2O -> 6NaBr + 2Fe(OH)3 + 3CO2}$$ Why $\ce{Fe(OH)3}$? Where do these $\ce{-OH}$ groups come from? This is from a series of reactions in a Russian sample exam question. ...
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0answers
22 views

Why does K2ZnO2 + H2SO4 yield K2SO4 + ZnSO4?

$\ce{K2ZnO2 + 2H2SO4->ZnSO4 + K2SO4 + 2H2O}$ How does the ZnO2 ion disassemble here? Does it perform as a basic oxide, since we know that a basic oxide + an acid --> a salt + H2O? I'm not sure, ...
2
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0answers
20 views

Simmons-Smith Cyclopropanation and Sterics

I know this is a Simmons-Smith reaction. Wikipedia tells me this: The Simmons–Smith reaction is generally subject to steric effects, and thus cyclopropanation usually takes place on the less ...
0
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1answer
45 views

Why does nitration of aromatic amines give meta directed nitro compounds?

Amines are activating groups and donate electrons to the resonance structure using the lone pair of electrons on Nitrogen. But when aromatic amines are nitrated, for example when benzyl amine is ...
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Stereochemistry and epoxide opening

An alkene is reacted with a peroxyacid. Am I correct in thinking that these two different products can be obtained? I know that Gilman reagents can open epoxides, and do so on the less-substituted ...
1
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0answers
21 views

Reaction of PPh3 with a ketone

I understand that in the first step, mono-alpha halogenation occurs. Where I am slightly lost is in the second and third steps. Am I correct in thinking that because I have a substrate with a halogen, ...
0
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2answers
59 views

Substitution of nitro benzene

In the following reaction why OEt does not get attached to meta of NO2 . As there would be -M of NO2 and -I of Cl. But why it get attached at para of NO2 1: I am thinking of compound as ...