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.
6,795 questions
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Identifying this compound based on NMR and GCMS?
enter image description here
Could you please help me identify my unknown compound based on this NMR and GCMS reading? Thank you!
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0answers
8 views
Difference of Ascorbic acid dissolved or precipitated in Glycerol?
Difference of Ascorbic acid dissolved or precipitated in Glycerol?
Referring to pat US20110008445A1
This resolves to:
Solution 1
At 25C, ascorbic acid was dissolved in glycerol and alcohol (...
1
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1answer
43 views
Does 2-chloro-1,3-dinitrobenzene show resonance?
I am preparing for my exam, and then I stuck up here. The answer to this question given by my teacher was
No, this doesn't show resonance because there are two bulky groups alongside chlorine, due ...
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0answers
31 views
Is there any red dye that will work with perflurocarbons?
I have a perflourocarbon (PFC) that I am trying to dye a light red. Is there any way for this to be possible or a specific dye that works with the PFCs?
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1answer
21 views
Which carbocation from following is stable by hyperconjugation?
These are the 4 figures, how to tell which one of them is stable by hyperconjugation? A B C all are stable by resonance if im not wrong but which one is by hyperconjugation too?
2
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1answer
27 views
Stereochemical dichloride treatment [duplicate]
In this question there is no inversion in A to B, but there is one in C to D. I feel like this must be due to the lone pairs on the $\ce{S}$ (in A) being able to open the ring, whereas this isn't ...
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0answers
12 views
How would this reaction look like in a potential energy diagram? (SN1 Reaction)
My task is to explain, why molecule A reacts in a SN1-reaction faster than molecule B. (I would do this by comparing their potential energy diagrams)
My idea is to have a closer look at the reaction ...
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32 views
Why doesn't Grignard react with THF (when used as solvent)
So on adding Grignard Reagant to an epoxide (3 membered oxirane ), it attacks the electrophilic carbon, but when we dissolved Grignard in THF, Gringard doesn't attack THF (another cyclic ether). Why??
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6 views
Does Hydroboration oxidation always give Anti-Markonikov product?
Consider the case of pent-2-ene, what will happen if we make this compound undergo hydroboration oxidation?
I tried this by checking stability of partial positive charge developing on the carbon in ...
1
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1answer
21 views
Consequences of ortho effect on resonance
Consider any carboxylic acid with any group at ortho position. According to ortho effect, the resonance of the $\ce{C=O}$ with the ring is inhibited.
Is this resonance entirely lost? Or some little ...
3
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0answers
22 views
Procedures for Syringe Pump and organometallic solution
For dispensing a pyrophoric organometallic acid into a reactor under argon flow, is it permissible to place the loaded syringe (glass 10ml, 9ml solution) on the syringe pump, with a long needle (36" ...
0
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0answers
25 views
Retention of configuration in Hofmann rearrangement
Why is there a retention of configuration in Hofmann bromamide degradation/Hofmann rearrangement?
I would think that there should be an inversion of configuration due to the migration of alkyl group ...
1
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1answer
29 views
Could an ester react with magnesium oxide?
Esters undergo saponification in the presence of hydroxides. Assuming anhydrous conditions, would they react with magnesium oxide?
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0answers
34 views
Why can't plastics be refined into primary elements and re-synthesized?
Unrefined crude oil is distilled into many pure and simple organic species which can be used to create plastic polymers. Why can't the carbon and hydrogen be re-arranged by through a vapor and plasma ...
5
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3answers
361 views
Why does the -OH group in β-naphthol direct the incoming diazonium salt towards the ortho position?
In the following reactions, the major product W is
I was doing this question which asks me the product of a diazotisation coupling reaction between diazonium chloride and β-naphthol. I know ...
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0answers
43 views
How to effectively get rid of 2-propanol acetate vapors and smell
I need to get rid of 2-propanol acetate vapors and its smell and need some chemistry help.
Some possibilities I came up with:
soap and water to rinse surfaces because soap might help increase its ...
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0answers
18 views
What are the products in this chemical reaction? Which steps do you need to take to solve this? [on hold]
What are the products in this chemical reaction? Which steps do you need to take to solve this?
The reactant seen on the picture is an acetone.
0
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0answers
10 views
Potassium alum powder, hydrogen peroxide, water and baking powder [on hold]
I added these three in a bottle (out of nowhere) and it started bubbling. And when it subdued, the liquid was kinda hotter than normal (hydrogen perox) and my finger is kinda rough. So i want to know ...
1
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1answer
36 views
Is the phenyl group in benzophenone electron donating/withdrawing?
The ketone carbonyl group is less reactive to nucleophilic attack than aldehyde since the alkyl group in ketone is electron-donating towards the carbon.
Is this the same case for benzophenone, where ...
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0answers
13 views
How long would it take for biscuits to burn inside and out on a 350 degree temperature [on hold]
I'm asking because I have a question like this on my chemistry final and i just wanted a little more help. That's all
0
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1answer
54 views
Reaction of 1 equivalent of Mg in ether with 1,4-dibromobut-2-yne
What will be the product formed the if the reaction of Mg in ether with 1,4-dibromobut-2-yne occurs? At first, I thought the answer would be cyclobutyne, but the correct answer is buta-1,2,3-triene.
...
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0answers
15 views
relation between resonance and acidity [on hold]
If acidity is how readily a compound loses electrons then how does resonance increase acidity?
or how resonance relates to the conjugate base.
0
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0answers
30 views
Does a non-chiral substrate (2-bromo-2-methylpropane) also form two products via an SN1 mechanism?
If I have an alkyl halide, in which its tertiary carbon is non-chiral (for example 2-bromobutane), which reacts via an SN1 mechanism does it also produce 2 products?
I am asking because I know that ...
0
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0answers
47 views
Periodic acid oxidation [on hold]
Which of the following compounds are not oxidized by $\ce{HIO4}$?
I have learned that only vicinal diols undergo oxidation by $\ce{HIO4}$, but the answer given is only 6 and 7. It is ms chauhan....
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1answer
47 views
Question regarding attached equation
Regarding this reaction, other than de-protecting the acetal, will we have an elimination reaction for the alcohol or no?
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0answers
19 views
What is meant by the term addition product? What are it various types? Isn't dot (.) used to denote such compounds? [duplicate]
I've heard of addition products like hydrates etc., I also know a dot (.) is used to denote it... I don't what it means exactly though.
I guess it's just a general way of describing addition products ...
2
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1answer
57 views
Could sodium in ethanol reduce amides to amines?
Strong reducing agents like $\ce{LiAlH4}$ can reduce amides to amines. Sodium in ethanol (as a source of protons) is also a very strong reducing agent. Could it be therefore used to, for example, turn ...
2
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0answers
23 views
Fehling's solution - What is the shelf life of the unmixed A & B components?
If you prepare two separate solutions of Fehling's A and Fehling's B, what is the shelf life likely to be? Will the effectiveness of the solution diminish over time? The literature recommends ...
0
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0answers
40 views
Why F- is more stable than CH3-
When I was reading Organic textbook, I saw a statement of 'F- is more stable than CH3- because the F has a greater electronegativity'. I agree with the explanation 'because of its high ...
0
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2answers
62 views
Why are triple covalent carbon to carbon bonds drawn linearly in skeletal structure? [duplicate]
In the link see that cyclic C-C structure with a triple covalent bond is drawn with an angle, probably the only way to draw it but why is it drawn linearly in non-cyclic and not like single or double ...
2
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2answers
56 views
Rearrangment during alkyne synthesis
What I have got as (G) is this.
$\hskip1in$
My questions
How the rearrangement from (G) to $non-1-yne$ can happen i.e. its mechanism?
Why Sodium Amide in particular yield terminal alkyne, unlike ...
0
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0answers
32 views
decarboxylation of citric acid
1,3 acetonedicarboxylic is very useful in total synthesis of alkaloids. Unfortunately while it can be produced from ubiquitous in plants and convinience stores citric acid, it does require the use of ...
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0answers
33 views
Reaction of alkyl halide withNaOH
I got an alkayl halide and it has to be reacted with NaOH. The substrate is 1,2-dibromobutane. I have learnt about the substitution and elimination reaction given by alkyl halides. Now, the bromine ...
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0answers
21 views
Not able to understand CBSE class 12 chemistry [closed]
A month ago my studies for cbse class 12 started but I am not able to understand chemistry specifically Organic Chemistry.
One issue is that some of my my class 11th concepts are not clear.
Pls help ...
4
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0answers
51 views
An unknown glassware piece from our cupboard
We have multiple of these. It is a small glass funnel with splits into 3 spouts from it. Now, we are thinking it might be similar to a cow receiver, however, I have never seen one this small or ...
4
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0answers
28 views
Unknown possibly handmade glassware- description in information below
Okay, Another random item from the cupboard (unknown users or discipline of life sciences unknown) could be anything up to 40 years old....
This appears to be a 2 neck quickfit adapter (B19 and B14) ...
3
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1answer
24 views
Purification of Solid Phase Synthesized Peptide
I began working in a newly setup lab, and I'm having a dilysine (K2) peptide synthesized by solid phase method. I plan to cleave the peptides from the resin with a cleavage cocktail of TFA. ...
1
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1answer
38 views
Reverse Cannizzaro reaction to make aldehydes?
Is it possible (and practicable) to reverse Cannizzaro reaction (disproportionation of aldehydes to carboxylic acids and alcohols) to produce aldehydes from carboxylic acid and alcohol without need to ...
3
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0answers
31 views
Butanone or butan-2-one?
According to IUPAC rules, am I right in assuming that butanone is sufficient, because there's only one possible molecule? I keep noticing butan-2-one, so I want to make sure.
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1answer
44 views
Identifying weaker base
Can you tell me the reason behind the answer to this:
Which is the weaker base?
(a) o-cresol; (b) Trifluoro-o-cresol.
Answer: (b) trifluoro-o-cresol.
I'm not a student in any institution. So ...
4
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2answers
1k views
Why when I add jam to my tea it stops producing thin “membrane” on top?
Thin "membrane" is created if I leave cup of tea for hour or more. And it usually sticks to the inner sides of the cup. But I noticed that when I drink tea with jam or syrup then the cup always clean ...
1
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0answers
32 views
What does which compound of this mixture do (Glue)
In school we are told to create an organic glue (edible and non toxic) and the teachers said we won´t get any help because it´s the final project. Can you please tell me which of the compounds of this ...
0
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0answers
47 views
Unknown glassware please help, vshaped with a small bulb on one side, hollow but narrow to both sides!
Looking to try an identify some glassware we have found in a cupboard. This is just the start of it...
1 item here, v-shaped, small bulb but hollow, narrow entrance and exit...
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0answers
11 views
Ester needed to replace Propylene Carbonate [duplicate]
I am looking for a clear ester to replace propylene carbonate that is not miscible in water, liquid at room temperature, safe to use for skin and hair and has a density of around 1.2 g/cm³?
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0answers
21 views
The Acidity of Fruit [closed]
Are there any evolutionary or general reasons for some fruits, such as apples, being more acidic than others?
And,
Is there any linkage between the colour of fruit or vegetable juice and pH?
...
2
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2answers
62 views
Does 4-methylbenzaldehyde give haloform and aldol reactions?
The following question was asked in JEE Advanced 2017:
The answers given are option A and B. I was able to get B as the correct answer but A look like the wrong option to me.
My approach for ...
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0answers
18 views
Resonance forms of deprotonated hydroquinone
What resonance forms stabilize deprotonated hydroquinone?
All I can think of is putting the lone pair (and the negative charge) on the C in para of the deprotonated OH. Is that helpful though? C is ...
2
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1answer
33 views
Is the -OCH3 group bulky?
Our teacher told us that $\ce{OCH3}$ is a less bulky group when compared to other bulky groups like $\ce{CH3}$, $\ce{NO2}$ etc. Is this true? If yes, why?
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0answers
14 views
How can I estimate the relative strengths of Lewis bases and acids? [closed]
From what I have been able to read so far, a higher pKa is positively correlated with higher strength of a substance as a Lewis base. In order to be a Lewis base, a substance must also have a lone ...
1
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0answers
25 views
What acids will Sodium Lauroyl Methyl Isethionate yield after hydrolysis? [closed]
As far as I understand, after hydrolysis Sodium Lauroyl Methyl Isethionate will yield sodium, lauroyl and methyl alcohols, and isethionic acid. Meaning lauroyl is referring to the fatty acid alcohol ...
