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.

Filter by
Sorted by
Tagged with
3
votes
0answers
15 views

Why are hydrogen bonds in an antiparallel beta sheet stronger than those in parallel beta sheets?

Beta sheets are illustrated as such in most diagrams, where: In an antiparallel B sheet, the polypeptide strands are arranged such that a C=O and an NH from adjacent strands face each other, and the ...
0
votes
1answer
38 views

What's the reason that alkanolamines change their color at storage?

What's the reason that alkanolamines (e.g. monoethanolamine, diethanolamine, triethanolamine) of technical purity change their color (from colorless over yellowish to red-brown) at storage? Is it ...
0
votes
0answers
19 views

Does the stability of the radical affect the product for Birch Reductions?

I am working on the Birch reduction on this question. I am thinking that 1) happens because the product for it has the most substituted alkenes. However I noticed that the radical for 2) would be more ...
1
vote
1answer
36 views

Regioselectivity of electrophilic addition of Halogen and Water (Halohydrin) on Alkenes?

I am currently studying for an organic chemistry exam and I just couldn't come up with a solution to the following question: Consider the reaction of 1-Propene + Br2 with water as solvent. Why will ...
-1
votes
0answers
34 views

Increasing order of pKa of the following compounds

Here is the question, Let's analyze each compound separately For $1$ The electron is delocalized and thus it will be the least basic thus would possess the lowest pKa For $2$ and $3$ The ...
-1
votes
0answers
34 views

Which is more acidic, acetylene or methanol? Why?

I looked up the pka values of ethyne, which is $25$, and and that of methanol, which is $15.5$. I am struggling to explain why ethyne's conjugate base is more stable than $\ce{-OCH3}$ despite having ...
0
votes
0answers
77 views

Number of stereoisomers of pentane‐2,3,4‐triol [duplicate]

What will be the number of stereoisomers of $\ce{CH3CH(OH)CH(OH)CH(OH)CH3}?$ By formula $2^n - 1 + 2^n + 1/2$ for $n$ being the odd number of chiral centres, it's $6;$ four optically active and two ...
0
votes
1answer
45 views

How to determine what covalent compound a substance is?

I have been given a substance which is unknown in my class. The substance is white in colour and is in a powder form. I have conducted a few tests and have found out that the substance is a covalent ...
-2
votes
0answers
26 views

Direct nitration of aniline

I read that direct nitration of aniline is not possible and we get para benzo quinone as major product and nitration at meta as minor.I am curious about how we get para benzo quinone and a mechanism ...
0
votes
1answer
29 views

Carbocation stability order?

so basically it's between primary benzylic carbocation which is known to be stable (benzlic) and secondary carbocation which is allylic... which is also stablized by resonance, i know that usually ...
0
votes
0answers
33 views

Carbocations and their stability

Between the carbocation I have to rank them from least to most stable. I know that resonance has a big impact and also the electronegativity of in this case oxygen and also nitrogen. I have come to ...
3
votes
0answers
42 views

Mechanism for the Formation of DMC

I have recently reviewed the synthesis of the dehydrating agent DMC (7), but I could find no reported mechanisms for its formation. I have proposed the mechanism drawn below, but I am unsure about a ...
0
votes
1answer
48 views

Nomenclature question about diols

I'm struggling to understand why the following organic compound: is named systemically as 2-ethylhexane-1,3-diol (I think its common name is etohexadiol), if the longest carbon chain in the molecule ...
-3
votes
0answers
38 views

Organic Chemistry synthesis catalyst and conditions: dehydration and cyclication

I have been thinking new ways to synthesis. There are two hypothetical routes 1)dehydrating an amino 5 member heterocycle to make pyridine derivaties but what suitable catalyst? This method is ...
-2
votes
1answer
33 views

IUPAC name of iso butyl alcohol [closed]

In my school book there was a question to give the IUPAC name of iso butyl alcohol I think the answer should be 2-methyl propanol but in my book it is written butan-2-ol which is correct?
-3
votes
0answers
17 views

Why is ch3 more +I than c2- [closed]

For a structure in which 3 ch3 are attached to a single c2-, why will ch3 act as +I ?
-1
votes
0answers
18 views

why aren't there 5 resonating structures of ch2-c6h5 where ch2 is a free radical

I don't understand why the last one is not considered one of the resonating structure?
-2
votes
0answers
31 views

Can propylene glycol be converted to just propylene? [closed]

If so, what would the process be like? How about ethylene glycol? Are either of these processes ever done on an industrial scale? It seems to me that removing both oxygen atoms would be fairly ...
-2
votes
1answer
32 views

How do i use hydrogen peroxide to oxidize alcohol to aldehyde? [closed]

I'm doing an experiment to oxidize alcohol to aldehyde. So we prepared 300ml of hydrogen peroxide 35% and 350ml of alcohol 50%. I wonder how to react these two and how H202 and C2H5OH respond. I'm ...
-1
votes
0answers
16 views

what are backbone and side chain of ibuprofen [closed]

what are the backbone and side chains of ibuprofen?
-1
votes
0answers
32 views

What is the mechanism of the hydrolysis of BADGE in water? [closed]

The mechanisms with OH- and H+ are shown in the figures, but water is not really acidic or basic. So how does the hydrolysis in water goes?
0
votes
0answers
39 views

How to begin developing a non-industrial chemistry? [closed]

I hope this question doesn't get flagged for being too broad or hypothetical or something. I have been trying to research the idea of developing chemistry lab techniques and procedures that would not ...
-4
votes
0answers
30 views

IUPAC nomenclature of organic compounds in CHEMISTRY [closed]

Is 4-bromo-2,2-dichloropentane correct or 2-bromo-4,4-dichloropentane.
-1
votes
0answers
20 views

Why is Cyclohexanol not more acidic than m- Chlorophenol? [closed]

I mean Cyclohexanol only has a single bond but m-chlorophenol has partial double bond character so shouldn't the OH bond be easier to separate in cyclohexanol?
-1
votes
1answer
27 views

Balancing redox equation involving ethanol and dichromate ion [closed]

$$\ce{C2H6O(l) + Cr2O7^{2-}(aq) -> C2H4O2(aq) + Cr^3+(aq)}$$ Basically, I have written the half equations, but I have having trouble with converting ethanol to acetic acid ($\ce{C2H6O -> C2H4O2}$...
0
votes
1answer
61 views

Why can't cyclohexylbenzene be called benzylcyclohexane? [closed]

The following structure represents the compound cyclohexylbenzene: Why can't the benzene ring be treated as a substituent and the compound be called benzylcyclohexane?
-1
votes
0answers
21 views

Why electrophilic attack at thiazole takes place at C-5? [closed]

Why electrophilic attack at thiazole takes place at C-5 instead of C-4. Generally electrophilic attack at azoles take place at C-4.
-2
votes
0answers
48 views

Moles question that I need help on pls [closed]

So the question is: o.o497g of a chloride of a group 1 metal called Z is dissolved on water, Excess acidified silver nitrate solution is added to the solution. The resulting precipitate is filtered ...
-2
votes
0answers
23 views
3
votes
1answer
152 views

What is the product obtained when methyl vinyl ketone is reacted with 1,2-ethanedithiol and the product is further hydrogenated with Raney Nickel?

I was solving questions from aldehyde, ketones and ethers and I came across a question that asks: What is the product obtained when Methyl vinyl ketone is reacted with 1,2-Ethanedithiol and the ...
3
votes
1answer
97 views

How do I synthesise this tertiary amide from these 5 compounds?

So basically I'm at a loss as to how to proceed. I started with the idea of converting the primary alcohol into an aldehyde and that is where I stoped. I understand that each substituent of the ...
0
votes
0answers
38 views

Why cooking drinks with sugar is healthy instead of adding it after [closed]

i use to hear people saying that cooking drinks like tea or beet juice with added sugar is healthy compared to when you add it in your cup when the drink is ready. Is this scientifically proven(which ...
-1
votes
0answers
41 views

determining bond length [duplicate]

how to determine this ? why cant we consider the sterric hinderance which is leading the bond length to increaseas then the atoms will tend to move far apart from each other also we can consider the ...
-1
votes
1answer
48 views

what is meaning that “reductive trapping” in organic chemstry? [closed]

Reductive trapping of intermediates, producing alkylated pyrroles, can be synthetically useful.
0
votes
0answers
20 views

Can I create fire snake using baking soda and powdered dried leaves? [closed]

Will a mixture of baking soda and some dried leaves that are powdered show some intumescent properties when exposed to flame, similar to how the mixture of baking soda and powdered sugar works in fire ...
1
vote
0answers
73 views

The Use of AI and Machine Learning in Organic Chemistry

I am trying to do a bit of research into the current use of machine learning in chemical industry. I've been told my original question was too general so I'll try to be more specific about what I'm ...
0
votes
1answer
28 views

Conversion process of lanolin to 7-Dehydrocholestrol [closed]

What is the Chemical process to convert lanolin to 7-Dehydrocholestrol? I don't know about the chemcial reaction, if I get the process I can try in lab scale.
-3
votes
0answers
29 views

Provide mechanism for the following reaction [closed]

Provide mechanisms for the following reaction.
1
vote
1answer
27 views

Stability of pyridine derivatives

Hi all, I'm pretty confused about which structure is the most stable. I'd say structure iii is the most stable as it has two methyl groups to donate electrons to N and increase its lewis basicity. ...
-2
votes
0answers
21 views

What are the chemicals and chemical reactions that takes place to make a frog/vertebrate change color? [closed]

So, I am doing a project for my Intro to Chemistry class, and my topic is the color changing chemistry of vertebrates. I have been trying to look on the internet for what chemicals are involved, but I ...
0
votes
1answer
81 views

Can Anyone Explain the Mechanism of the Birnbaum-Simonini reaction?

When silver acetate reacts with iodine and $\ce{CCl4}$, it gives esters and 2 moles of $\ce{AgI}$ but when it reacts with iodine and lead acetate, why it gives alkyl halide, $\ce{AgI}$ and $\ce{CO2}$....
-2
votes
2answers
54 views

Identifying an unknown organic liquid [closed]

I have a bottle of a clear, colourless liquid identified only as “solvent”. It’s is immiscible, flammable with a smoky yellow flame, makes a green solution with chromic acid. It doesn’t decolourise ...
-1
votes
0answers
29 views

How did ancient chemist found metal, chemical and gas? [closed]

How did chemist or scientist could found a metal that is very hard and rare to find? For example silver may looks similar to cadmium and zinc, but how did scientist determine it was different metal. ...
2
votes
1answer
66 views

Is a Methoxy group meta directing in this problem?

The following question was given in chemistry today , August 2020 edition , page 47 , problem 9. The answer to this problem is (a). My Attempt In the third step , the carbon electrophile can attack ...
-1
votes
0answers
29 views

Why is glycosyl called a univalent radical? [closed]

After we remove the hemiacetal hydroxyl group, the sugar will end up with a positive formal charge. I know that there is some resonance effect going on there, but I don't know why the molecule is ...
0
votes
0answers
19 views

Migratory Aptitude [duplicate]

I never understand how or why one group migrates better than the other in case of rearrangement reactions. Is it experimentally determined or is there some logic to it? Please explain in the case of ...
23
votes
4answers
4k views

Why is '-ethane' in 'methane'?

Is there a chemical or historical significance in the fact that 'ethane' is just 'methane' without the 'm'?
-1
votes
1answer
89 views

Vital force theory [closed]

The vital force theory of organic compounds was disproved by a scientist Friedrich Wöhler is 1828 as follows: Urea is a organic compound which was thought to be made only inside the bodies of living ...
-1
votes
1answer
29 views

Alignment of leaving groups in elimination reactions [closed]

I was going through the Elimination reactions and I noticed that in E2 Mechanism: The leaving groups in E2 elimination align themselves so that they are in the same plane at 180° to each other before ...
-1
votes
0answers
56 views

Green color solution problem [closed]

I am in the process of validating a test bench for water meters which operates in closed loop for months requiring the following regulations: temperature regulation (35 ° C ± 2 ° C); chlorine ...

1
2 3 4 5
169