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. ...
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Dehydration of 4-Hydroxyphenylacetone to Phenylacetone possible?
Is a Dehydration of 4-Hydroxyphenylacetone (CAS.770-39-8)to Phenylacetone with H2SO4 possible? Does anybody have some Literature on that, cause i searched and didnt find anything.
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14 views
Are these the intermediate steps for dihydroxylation of an alkene using OsO4?
or perhaps
Also, is NaHSO3 required at any point and if so why?
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0answers
5 views
Can iodometry analyse the peroxide radicals of palmitic acid after it has been heated?
I know that oleic acid in palm oil forms hydroxide radicals to form aldehydes in their secondary oxidation. Does a palmitic acid go under a similar process?
3
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0answers
23 views
The carbon-13 NMR for 1,1,1-trichloroethane
I was working the following spectroscopy problem from Clayden 2e that asks us to identify the structure of a compound from information about its carbon-13 NMR peaks.
Problem 3.5: The solvent ...
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1answer
18 views
Difference in leaving group ability due to variation in nucleophiles
Wikipedia writes:
There can still exist contextual differences in leaving group ability in the purest form, that is when the actual group that leaves is not affected by the reaction conditions (by ...
1
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0answers
21 views
What is the origin of chirality in the universe?
I am just curious with the fact that our body is made of so many chiral molecules the DNA that we possess is chiral, the amino acids in our body is chiral and there are many other objects other than ...
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0answers
24 views
Production of alkyl halides
One of the famous reactions of production of alkyl halides is the reaction of hydrogen halide with alcohols.
The synthesis of the alkyl halide is different depending upon the halogens.
I was taught ...
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1answer
24 views
From where does nucleophile attack the ketone in a nucleophilic addition reaction ? [on hold]
I inserted a picture to help show where my misunderstanding lies.
I know that in the nucleophilic addition of ketones and aldehydes , a racemix mixture is produced . And I know that the reason is ...
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0answers
14 views
Reaction between hcfc 141b and isopropyl alcohol [duplicate]
Can 50% 1,1-dichloro-1-fluoroethane react with 50% isopropyl alcohol?
Condition: room temperature
2
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1answer
23 views
Acidity comparison between cyclopropene and cyclopropane
There many sources on the internet saying that cyclopropane is more acidic than cyclopropene because the conjugate base in latter would have antiaromaticity which would destabilize it.
But in this ...
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0answers
24 views
IUPAC name of this trisubstituted benzene [duplicate]
Can you guys please help me name this compound? Steps would be appreciated.
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0answers
17 views
Why do alkenes form alkanes at high temperature and pressure? [on hold]
At higher temperatures, atoms have higher energies and vibrate more quickly, and so have a higher reaction rate. High pressures also increase reaction rate. On that note, why do alkenes, when under ...
2
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0answers
17 views
Are alkaline conditions required for Maillard reaction?
The Maillard reaction, a form of non-enzymatic browning, refers to a cascade of chemical reactions that frequently occurs in the cooking of foods (e.g. baking of pastries, roasting of meats). It ...
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1answer
32 views
What reaction would occur when PCC (pyridinium chlorochromate) is added to an ester say methyl(or) ethyl Ester(Assume polar protic solvent) [on hold]
The problem here is that it oxidises selectively so would it also not react here? Or would it hydrolyse the carbonyl group away and then upon aqueous work leaving a ketone?
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30 views
What would be the product of this reaction? [on hold]
Please solve it ASAP and post the solution (https://i.stack.imgur.com/h3mUC.jpg)
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0answers
42 views
Plz solve it ASAP [on hold]
Please solve it and give the correct answer (https://i.stack.imgur.com/3FmrK.png)
1
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0answers
24 views
Experimental measurement on the ring-strain
for my thesis i calculated the ring-strain of a molecule by MP2 on the computer. I was wondering if there is an easy possibility to get the experimental value of the ring strain. I guess I have to ...
0
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0answers
14 views
Why there is no explicit expiration date on cosmetics? [on hold]
On make-ups and skincare products, FDA doesn't require the manufacturers to put the expiration date on them. Instead, they will put a serial code to indicate the production date. It's unclear to ...
1
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0answers
24 views
Why aren't primidone's lactam groups acidic?
I understand that 5,5-disubstituated derivates of barbituric acid only show lactam-lactim tautomerism opposed to the lactim-lactam and keto-enol tautomerism of barbituric acid, hence the 5-mono and 5,...
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1answer
31 views
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0answers
14 views
Titration of Oils in an Alcoholic Medium with aqueous NaOH to determine Free Fatty Acids [on hold]
I wanted to know about the Free Fatty Acid content in oil. I am using a titration reaction to determine the FFA content in the oil. However, I do not seem to find a reaction that happens in the ...
0
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0answers
24 views
Basics of the electrical double layer
I am currently trying to gain a better understanding of the use of electrochemistry in the field of organic synthesis. In order to better understand these syntheses I thought it would be a good idea ...
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1answer
29 views
Is the acetyl protecting group cleavable with ammonia?
I read in several sources that one can cleave an acetyl protecting group attached to an amine (thus an amide!) with gaseous ammonia. I can't imagine that a nucleophilic attack by ammonia at the ...
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0answers
13 views
Chemical bonding lone pair orientation in organic compounds [duplicate]
Today in our class we discussed about pyridine and pyrolle...I have read the other articles on the exchange where we see that since one p orbital is already pi bonding lone pairs wouldn't get involved ...
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0answers
15 views
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18 views
What is the difference between optical isomers and enantiomers? [closed]
Maybe the definitions of each would help me differentiate.
1
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1answer
29 views
E1cb reaction conditions
I'm wondering why an E1cb reaction needs a poor leaving group like -OH attached to one of the carbons.
I thought the conjugate base of the leaving group must be stable enough not to de-protonate one ...
0
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2answers
26 views
Which is more activating among Phenol, Sodium Phenoxide & Anisole? Also arrange them in increasing order of their activating effect
This is in reference to Kolbe's Reaction, actually I think that Sodium Phenoxide is the most activating because, in Kolbe's Reaction we don't make react $\ce{CO2}$ directly with phenol for the ...
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1answer
45 views
Why chlorine participates in resonance even though it is a electron withdrawing group in case of phenyl chloride
Background
A fundamental concept imparted at the beginning of organic chemistry is electronegativity. $\ce{N, O, F}$ and $\ce{Cl}$ are particularly electronegative and are capable of shifting the ...
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0answers
16 views
Is the reaction between ethanol and acidified potassium dichromate an example of an autocatalytic reaction? [on hold]
If excess $\ce{K2Cr2O7}$ was used , and the reaction mixture was heated under reflux, an acid is produced, does this acid help catalyse the reaction ?
4
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1answer
41 views
Are nucleophilic aromatic substitutions stepwise or concerted?
Recently, there has been a lot of discussion about nucleophilic aromatic substitution (SNAr) reactions apparently being concerted instead of stepwise (e.g. Krämer, K. Textbook aromatic substitution ...
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1answer
24 views
Differences in Glycerol Nomenclature [closed]
Could someone differentiate between the terms glycerol, glycerin, glyceryl and glyceride?
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0answers
32 views
Planarity of molecules in organic chemistry [closed]
So, I wanted some information regarding organic chemistry.
Here is my question:
how to determine whether a cyclic compound is planar or not?
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1answer
21 views
Arrange the following in order of neucleophilicity in protic solvent [closed]
I know that they will be in order of hydrogen bond formation capacity. But how to know the same in this case?
0
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0answers
21 views
Method of mitigating methane production from hydropower dams? [closed]
Apparently, reservoir type hydroelectric power plants produce a large amount of methane gas.
https://www.internationalrivers.org/resources/greenhouse-gas-emissions-from-dams-faq-4064
Most of the ...
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0answers
19 views
Mechanism for dehydration of Alcohols
My professor says that $2^{\circ}$ and $3^{\circ}$ alcohols always go $E1$ while $1^{\circ}$ goes $E2$ elimination, but the product is still given by $E1$ mechanism. My doubt is that if there are no ${...
5
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1answer
87 views
Is HMgX also a Grignard Reagent like RMgX?
We do know that the Grignard Reagent is $\ce{RMgX}$ where R is some alkyl group & X is any halogen group.
So, my question is that, whether $\ce{HMgX}$ is also a Grignard Reagent like $\ce{RMgBr}$?
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1answer
30 views
Confused in comparing the acid strength of these two cyclic compounds
I am having a hard time understanding the more acidic hydrogen in the following two compounds.
I attempted it by looking at two things, finding the possible resonance and the EN of the Sulfur and ...
0
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1answer
34 views
Question about reaction notation (commas, numbers, and dashes)
I'm learning Organic Chemistry and in my university course we're using commas, numbers, and dashes in the reactions.
My question is:
What is the difference between these 3 forms of notation?
$$\ce{-...
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0answers
19 views
Lewis structure of CH2N2 [duplicate]
Why is option D a better lewis structure than option F, when both of them seems to satisfy the octet rule and they both have the correct formal charges.
0
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1answer
20 views
any software or code in python that can permutate Canonical SMILES? [closed]
any software or code in python that can permutate Canonical SMILES ?
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0answers
13 views
Determining polymer from monomer [closed]
How do you determine its polymer shape from the monomer on the left? (the one in black)
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0answers
20 views
Alcohol and Alkyl Halide Reaction [closed]
For a reaction between an alcohol and and alkyl halide, for e.g CH3OH and 1-ido-1-methylcyclohexane, would the elimination reaction ever occur or will it always be a minor product and why ?
0
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1answer
29 views
Why is Phosphorus the central atom in POF3? [closed]
Why is Phosphorus the central atom in POF3 when O has the least electronegativity?
And if electronegativity can't predict which atom is the central atom, what can?
Thank you.
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0answers
20 views
I use the crisscross method to combine Carbon (4+) with Oxygen (-2) I get C2O4 but not CO2 and how does C≡O fit in to all this? [closed]
my teacher taught us to use the crisscross method to combine two elements to make a chemical formula. Then from the formula you can see how many elements there are and make a lewis dot structure. That'...
0
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0answers
25 views
organic chemistry [closed]
I am struggling with this question, this is all the detail i can provide as i dont know where to go. Applogies if some people think its not enough information as if i ahd the info i would use it ...
0
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0answers
16 views
How i can make an animated organic reaction mechanism?
I'm wondering if there is a software that helps to make an animated organic mechanism and show how arrows go.
It would be clearer in visualizations.
0
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0answers
19 views
Why is E2 favoured over SN2 in the presence of R-O⁻?
I know that with R-S- there is a smaller HOMO-LUMO energy gap than with R-O-, hence R-S- is a better nucleophile, so SN2 is favoured over E2. But why is E2 favoured in the presence of R-O-?
0
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0answers
15 views
Role of sodium Lauryl Sulfate in iodometric titration?
During titration of iodine solution with acetic acid against sodium thiosulfate, when the yellow colour almost disappeared. 0.5 mol of 10% sodium lauryl sulfate and starch is added. What is the role ...
2
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0answers
39 views
Why does LDA solution gradually turn dark brown?
LDA (lithium diisopropylamide) solution in THF/hexane gradually turns red-brown liquid. Especially commercially available one is extremely dark red-brown. What makes it brown?
I've searched online ...
