Questions tagged [organic-chemistry]
Use this tag for questions relating to organic molecules and their properties (structure of organic molecules, spectroscopic properties, reaction mechanisms, stereochemistry etc). DO NOT use this tag as the only tag in your question, as this tag by itself cannot appropriately classify your question. Always use this tag in addition to other more specific tags.
6,969
questions
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10 views
What chemical or material could attract plastic?
I'm looking for a material that is affordable, around the 100 USD per kilogram. I'm thinking of a chemical that kind of attracts plastic like a magnet. Thanks!
-1
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0answers
6 views
Coordination Bond of metal nanoparticles [on hold]
Silver nanoparticles form coordination bond with cationic site at room temperature?
0
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0answers
14 views
How to calculate molecular emission spectra?
Is there free software which can calculate the fluorescence emission spectra of organic molecules?
Let's say for example: rubrene
There is a bunch of quantum free quantum chemistry software:
https://...
-2
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0answers
23 views
Is isobutane found in the organic or aqueous layer of a sep. funnel? [on hold]
Is isobutane found in the organic or aqueous layer of a sep. funnel?
1
vote
1answer
75 views
Does energy come from fuel or oxygen? (surprise?)
Question: Is it oxygen or fuel that releases energy during burning?
The answer from this article:
Why Combustions Are Always Exothermic, Yielding About 418 kJ per Mole of O2 (Journal of Chemical ...
1
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1answer
30 views
Usage of TFA in Pfitzner-Moffat oxidation and Collins vs Jones oxidation
Is the addition of TFA in Pfitzner-Moffat oxidation to protonate the DCC to form a positive carbocation for the alcohol to attack? Or is there more to it? Why is TFA used and not other acids? Are ...
-1
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0answers
23 views
Speeding up the rusting/oxidation process of various metals using ferric chloride? [on hold]
So I have ferric chloride etching solution here is the datasheet for the product I have: https://download.altronics.com.au/files/datasheets_H0800D.pdf
I have 4 types of metal; stainless steel metal, ...
0
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0answers
28 views
Last steps of mechanism of Swern Oxidation
My question is regarding Swern oxidation. Why is the methyl group of the DMSO deprotonated and not directly the red hydrogen atom of the R2-CH-O bond deprotonated? Shouldn't it be that oxygen more ...
0
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0answers
28 views
Synthesis of thiolated azo-derivatives
I am looking for a method to synthesis thiolated azo derivatives.
I would like to start from methyl red and change carboxylic group to thiolated azo derivatives.
How could I do that?
0
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1answer
29 views
Radical monobromination of cycloalkane
I'm trying to figure out the isomeric products of the radical monobromination of bicyclo[2.2.1] heptane. I'm not sure at which site the bromination would happen and what makes one site better than the ...
-4
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0answers
18 views
1
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1answer
43 views
Theoretical p-Phenylenediamine synthesis
I am thinking on an alternative synthesis of pPDA, in which I need counsel. I was thinking about these easy reactions, and I want to ask if it can be done, or maybe you can hint me some reference. I ...
-1
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0answers
10 views
Reaction of alkynes with HBr gives vicinal or geminal dihalide? [on hold]
reaction of alkynes with HBr will give vicinal or geminal dihalide ?? How to check ?]
0
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1answer
47 views
Trans vs. cis, or Z vs. E
I am new to organic chemistry and am confused regarding the following question:
Does the geometrical isomerism of 3-methyl-2-heptene fall into the category of trans vs. cis, or the category of Z vs. ...
-2
votes
1answer
27 views
What is prefix L for amino acids?
I know the "L" at the beginning of amino acids pointed out to show the substance is digestive. The thing I don't know is that what is the "L" stands for and how it works.
1
vote
2answers
43 views
Low or high enthalpy of combustion in relation to stability
I know that this is a very basic question, but I am new to chemistry and I cannot figure it out on my own:
A combustion is always exothermic, so ΔH is negative. It says in my textbook that more ...
0
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0answers
13 views
Why does the hydride ion in LAH act as a nucleophile rather than a base in the reduction of carbonyl compounds? [duplicate]
Why does the $\ce{H-}$ ion in $\ce{LiAlH4}$ act as a nucleophile rather than a base in the reduction of carbonyl compounds ??
Because $\ce{H-}$ being a small ion would act as a better base than a ...
0
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1answer
24 views
Organic Chemistry - Reaction scheme and structures of molecules
Compound P and compound Q are straight-chain constitutional (structural) isomers with the
molecular formula C5H12O. Compound P can form optical isomers, whereas compound Q
cannot.
When reacted with ...
2
votes
2answers
64 views
Why do chiral biological molecules only exist as one enantiomer? Does it have any advantage?
Why is it that chiral biological molecules are enantiomerically pure? The other enantiomer would have the same reactivity, and the only difference is their angle of rotation of plane polarized light. ...
2
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0answers
20 views
What's the mechanism behind mineral oil loosening cyanoacrylate bonds?
Per industry literature I found that mineral oil is used to loosen out "super glue" and aid in removal from skin. I am exploring the chemistry of this loosening and I am intrigued. Please help me find ...
1
vote
0answers
34 views
Heating of cyclic dicarboxylic acid [on hold]
How do we predict the products formed when we heat cyclic dicarboxylic acids? I know that in case of aliphatic dicarboxylic acids we apply Blanc's rule and predict the product formed based on the ...
2
votes
0answers
22 views
The effect of lactose monohydrate on acid-base extraction of tolterodine tartrate
I am doing an organic chemistry project for school in the form of an acid-base extraction of tolterodine tartrate (Detrol) in ammonium hydroxide (or sodium hydroxide, haven't decided yet) and ...
-4
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0answers
37 views
Acetaminofen + aceticacid yields
Ive used several balance equation calculators for the formula
$$\ce{C8H9NO2 + CH3COOH}.$$
And i get as result
$$\ce{C8H9NO2 + CH3COOH -> C9H13N + CH3COO + H2O}.$$ But when i mix the to reagents ...
3
votes
2answers
217 views
Number of optically active compounds among the products of ozonolysis
The number of optically active compound(s) obtained upon complete ozonolysis of
the following optically active compound is
In the question, I broke all the double bonds and added a $\ce{-CHO}$...
0
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1answer
23 views
Why do I need H20/H+ for nucleophilic attach by grignard reagent? [on hold]
In solving the below reaction, I am confused as to why H2O/H+ is needed when using a grignard reagent as a nucleophile..... Wouldn't the MgBr dissociate from the Alkane when dropped in a solvent and ...
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0answers
35 views
Nucleophilicity of amines [on hold]
I think the bridge head nitrogens won't react.The answer is B C A. Can someone help me, please
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0answers
19 views
What is relation between molality and mole fraction [closed]
I need all details about chemistry and I want to be a good student in a chemistry subject
4
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0answers
47 views
Synthetic approach for precursor 1,1'-(bromomethylene)bis(1H-pyrazole) in ligand synthesis
Relevance
During my Bachelor's project I focused on the synthesis of iron(II) complexes comprising a tetrapodal pentadentate ligand from the ligand family $\text{PY5R}_2\ (\text{R = H, Me, OH, OMe})$....
-1
votes
1answer
34 views
Methocel Hydration [on hold]
Need help understanding impact of temperature and content of water/glycol on strength (crush, attrition) of methocel (methyl cellulose) extrudates.
In a given process, methocel is mixed at 150oF at ...
0
votes
1answer
57 views
Mechanism of 5‐(iodomethyl)oxolan‐2‐one synthesis from 4‐pentenoic acid and iodine in acetonitrile [on hold]
There is a question in my organic chemistry textbook with an answer. What it doesn't explain (and neither does my theory textbook, I checked) is the mechanism involved in the reaction. The reaction is ...
0
votes
1answer
67 views
Is scopolamine same as scopolamine hydrobromide?
Is scopolamine extracted with methanol or acetone from Datura or Brugmansia scopolamine free base or scopolamine hydrobromide?
If you take a look at the Wikipedia page for hyoscine, the Synonyms part ...
4
votes
2answers
190 views
How to make 1,1-diphenyl-1-butene from benzophenone and 1-bromopropane?
I would like to know the method of syntheses of making
1,1-diphenyl-1-butene $(\ce{C16H16})$ from benzophenone $(\ce{(C6H5)2CO},$ generally abbreviated $\ce{Ph2CO})$ and 1-bromopropane $(\ce{...
-3
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0answers
18 views
Difference between α-D-glucose and β-D-glucose [duplicate]
What's the difference between alfa-D-glucose and beta-D-glucose? Thank you the explanation.
8
votes
1answer
96 views
Why won't this reaction work?
I'm trying to do a reaction with phenyl piperazine, triphosgene, and 4-bromophenol. However, every time I do this reaction I seem to get the carbonyl di-4-phenylpiperazine as a major product (based on ...
-4
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0answers
36 views
2
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0answers
35 views
Why doesn't Grignard reagent attack alkyl halides [duplicate]
When we add magnesium to
alkyl halide, Grignard reagent is formed. $$\ce{R-X + Mg -> RMgX } $$ It is highly nucleophilic in nature. Now at this time the electrophilic alkyl halide is also present ...
3
votes
1answer
56 views
Producing soap from sodium carbonate and oil
Can we get soap by mixing $\ce{Na2CO3}$ from seaweeds with oil? I am not good at chemistry and saw this in an anime Dr. Stone, so I just wanted to know if it is true or not.
1
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1answer
37 views
Synthesis of phenethyl alcohol from benzene
How can I make phenethyl alcohol $(\ce{C6H5CH2CH2OH})$ from benzene?
I have got information that phenethyl alcohol is made from benzene by Friedel-Crafts reaction between benzene and ethylene oxide ...
2
votes
1answer
27 views
Inductive effect of alkyl ammonium groups
Why $\ce{-NR3+}$ has more -I effect than $\ce{-NH3+}?$
And what about order of $\ce{-NHR2+}$ and $\ce{-NH2R+}?$
My attempts
I got idea about electronegativity of carbon atom in $\ce{R}$ is more ...
2
votes
1answer
55 views
Test for unsaturation
Ethene and ethyne can be distinguished by employing the test
a. $\ce{Br2}$ in organic solvent
b. Baeyer's test
c. Phenyl hydrazine
d. Tollen's reagant
According to me it ...
-1
votes
0answers
18 views
Syngas to methanol [closed]
Could you offer an efficient/low cost way to convert variable syngas to methanol with high yield of productivity?
(I am a beginner.)
Thank you in advance.
2
votes
0answers
27 views
Geometry optimization with GAMESS. Why won't SCF converge?
I'm using GAMESS to run a geometry optimization on a thiourea molecule, using PM6. However, the output file keeps displaying the error message, "NO FORCE FIELD, SCF DOES NOT CONVERGE." Is there an ...
-4
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0answers
13 views
What is the peoduct of this reaction.P4+06----->? [closed]
What is the peoduct of this reaction.P4+06----->?
0
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0answers
21 views
How can vinyl chloride arise from treating 1,2-dichloroethane with a solution of potassium hydroxide in ethanol?
Liebig apparently created it that way (https://en.wikipedia.org/wiki/Vinyl_chloride#Production). However, googling I can not find chemical equation for such reaction, I only see ethene as result of ...
0
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2answers
65 views
Can someone please explain to me where the flaw is in my proposed synthesis mechanism?
For this I have to convert benzene into the product in the box using the reagents listed. The order of reagents that makes sense to me is IDGBEH. However, this is not the correct answer. Somewhere I ...
0
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0answers
17 views
Does double ended fatty acid exist? [duplicate]
A fatty acid consists of a carbon chain, with a carboxylic acid on one end, and just a hydrogen on the other.
Does a substance with two carboxylic acid ends and no hydrogen end exist?
-1
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1answer
37 views
Nucleophilic substitution for the alkaline hydrolysis of ethyl acetate [closed]
Is this reaction $\mathrm{S_N1}$ or $\mathrm{S_N2}?$
$$\ce{CH3COOC2H5 + NaOH → CH3COONa + C2H5OH}$$
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0answers
14 views
Investigating the effect of solvents on the alkaline hydrolysis of ethyl acetate
In the following reaction, I believe a polar aprotic solvent like propanone will be more favorable since the partial negative charge on the oxygen atom in propanone will attract the sodium ion from ...
2
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0answers
23 views
Why do the induction effects of fluorobenzene decrease electrophilic addition reactivity, conjugation effects increase selectivity?
Fluorobenzene shows signs of both the electron withdrawing and electron donating groups on benzene. Electrophilic substitution to the ring is less reactive because the fluorine is very electronegative ...
1
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0answers
20 views
Does 2,2-dimethylpropan-1-ol give a positive Lucas test?
I learnt that the Lucas test involves the formation of a carbocation and it gives a positive test based on the stability of the carbocation formed, and hence primary alcohols do not show turbidity (...
