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
2 votes
0 answers
53 views

Acidification of a vicinal diol [duplicate]

The following is a question from Advanced problems in organic chemistry by MS Chouhan: The options given are: My initial thought was that this could be a pinacol–pinacolone rearrangement. However ...
user avatar
1 vote
0 answers
36 views

Comparison of boiling points between 2‐butanol and isobutanol

Which has higher boiling points among butan‐2‐ol (1) and 2‐methylpropan‐1‐ol (2)? I know that branching decreases the boiling points, but I want to know how position of substituents affects the ...
user avatar
0 votes
1 answer
37 views

Does vinyl chloride have greater electrophilic addition rate than ethene? [closed]

Which of the following will have a greater rate of electrophilic addition? Since the rate of electrophilic addition AdE is proportional to nucleophilicity of the substrate, I assume chloroethene $\ce{...
user avatar
-1 votes
0 answers
16 views

What is synthesizing PTMA and polymer oxidation?

Here is an excerpt from the organic radical batteries Wikipedia page: Free-radical polymerization as a synthetic approach has several drawbacks. The most relevant limitation is the fact that ...
user avatar
  • 1
-2 votes
2 answers
30 views

Information about liquefied carbon factories from carbon dioxide

I am looking for some information about the factories that turn CO2 gas into the liquid CO2. I want to know the methods that they are using. Can anyone help me? Thanks
user avatar
-1 votes
0 answers
25 views

Rate of solvolysis for given allylic chlorides [closed]

We clearly have to judge the resulting carbocation stability in this question and that's what I tried doing. (I) results in a primary allylic carbocation in both possible resonating structures. (II) ...
user avatar
0 votes
0 answers
28 views

How does the second hydrolysis of phthalimide work (hydrolysis of amide)?

In the hydrolysis of Phthalimides we can see two successive hydrolysis of "amides" see ChemLibre for a nice mechanism This is interesting because normally (also according to ChemLibre) ...
user avatar
4 votes
0 answers
54 views

Is There a Problem with the Assignment of Stereochemical Descriptors by ChemDraw in Select Examples?

While using ChemDraw Professional 21.0.0.28 to construct some cyclic allenes and rotationally restricted biphenyls, I came across anomalous assignments of stereochemistry. [For the latest version of ...
user avatar
  • 13.3k
-4 votes
0 answers
22 views

Artificial photosynthesis

Is it possible to transform CO2 into glucose (C6H12O6) like photosynthesis but with electricity instead of sunlight? The equation of photosynthesis is $$\ce{6CO2} + \ce{6H20} → \ce{C6H12O6} + \ce{6O2}$...
user avatar
  • 1
-1 votes
0 answers
19 views

Reason behind colour change of indicators [duplicate]

We know that for testing acids and bases we use the indicators. For eg. Acid turns blue litmus red and base has no effect on the blue litmus. Similarly colours are also seen in phenolphthalein, methyl ...
user avatar
6 votes
1 answer
349 views

The major product of radical halogenation: Why is it a halogen attached to a primary carbon and not a tertiary carbon in the given example?

There's this problem that I saw in my Organic Chemistry book: The reaction between $\ce{(CH3)3CH}$ and $\ce{Cl2}$ forms two products: $\ce{(CH3)2CHCH2Cl}$ (63%) and $\ce{(CH3)3CCl}$ (37%). Why is the ...
user avatar
  • 71
0 votes
0 answers
29 views

If they both form hydrogen bonds, Why does borax make polyvinyl alcohol slimy/elastic but water doesn't?

When dissolved borax (borate ions) and polyvinyl alcohol are mixed, an elastic slime is formed. To my understanding, this is because the borate ions form hydrogen bonds with the OH groups on the PVA, ...
user avatar
0 votes
0 answers
26 views

Table of viscosity of water vs temperature

Above is the table for water physical properties table with temperature related with a,v,b,Pr,Ra factor. This table has temperature only from 0 to 100. May I ask if there is a full table for this with ...
user avatar
-2 votes
0 answers
35 views

Propylene glycol smells like alcohol [closed]

I got a batch of propylene glycol and suddenly the smell became like acetone or alcohol is there away to get rid of the smell without affecting the pg Sorry my English is not good
user avatar
-3 votes
0 answers
23 views

Will water become high in iodine if you soak kombu in it for 30 minutes? [closed]

Kombu kelp can contain up to 2,984 mcg of iodine per seaweed sheet (1 gram). Source. Another souce says that kombu can lose up to 99% of its iodine if you boil it for 15 minutes (and I guess now the ...
user avatar
0 votes
1 answer
46 views

Substitution v/s elimination

For SN2 pathway we use an strong nucleophile (OH-,CN-) so they can easily substitute X(halogen) group from rear side. While for elimination bimolecular reactions we use a strong conjugated base (RCH2O-...
user avatar
2 votes
1 answer
63 views

Reaction of 2-carboxybenzaldehyde with $\ce{NaCN/HCl}$ - does carboxylic acid interfere?

In the reaction of 2-carboxybenzaldehyde with $\ce{NaCN/HCl}$, the aldehyde will form cyanohydrin. But my question is, will the carboxylic acid remain intact? Will it react separately or with the ...
user avatar
-4 votes
0 answers
32 views

name of a scientific method used by chemists [closed]

What is a name of a scientific method that enables to investigate and describe properties of chemical substances? I am a mathematician. When I was in high school and our chemistry teacher was drawing ...
user avatar
  • 1
-4 votes
0 answers
11 views

why did the temperature change when the first few measures of slaked lime were added to the vinegar [closed]

I need to describe any links between the number of measures of slaked lime added , pH and the temperature . What was the pattern for the pH and temperature as more measures were added ? Did the ...
user avatar
  • 1
4 votes
1 answer
550 views

Converting benzaldehyde to benzophenone in no more than two steps

This is a question from my book, as stated in the title: How will you convert benzaldehyde to benzophenone in no more than two steps? I can do it in three steps - first using $\ce{PhMgBr}$ on ...
user avatar
-2 votes
0 answers
30 views

How do I know which substituent is m, p, o directing, which has more influence? For example i know that OCH3>CH3 but i need them all. please help<3 [closed]

aromatic compounds and benzene reactions So I am studying for my exams of advanced organic chemistry at my faculty of Molecular biology and genetics, and for some reason I just can't get the hold of ...
user avatar
-1 votes
0 answers
32 views

An Optically Active Compound without Chiral Carbon [closed]

I came across a structure like the one given below: Now, as one can see, there isn't any Chiral Carbon attached to it. But I got it know that it still is Optically Active. Though one can say that ...
user avatar
  • 9
0 votes
0 answers
17 views

Descriptive explanation of different Carbon Nanotubes Conductivity

I'm soon having a talk about Carbon Nanotube FETs and wanted to give a short introduction into CNTs in general. Of course for device operation it's important that some types of single-walled CNTs are ...
user avatar
  • 33
1 vote
0 answers
31 views

What is the inherent mechanism in carbocatalysis?

When checking non-metallic catalysis materials, one mentioned example is that of carbocatalysis; using heterogeneous carbon structure to catalyze a reaction (Not to be confused as a support surface ...
user avatar
-2 votes
0 answers
26 views

Why is carbonyl peak seen at 1612 cm-1 why is the peak seen so low

the ketone is next to a phenyl ring and the only peak that is within range is 1612 cm-1 why is it so low
user avatar
7 votes
1 answer
248 views

Stable conformer of protonated ethane-1,2-diamine

I had been studying on the stable conformers of ethylene glycol and ethane-1,2-diamine. Due to hydrogen bonding in the vicinal $\ce{-OH}$ groups, ethylene glycol prefers to show gauche conformer. The ...
user avatar
  • 191
0 votes
0 answers
39 views

General conditions for aryl migration of 2-bromo-1,1-diphenylethylene with sodium amide [duplicate]

In this reaction, I am quite unsure whether a phenyl shift would be involved or not because I was managed to solve the phenyl shift mechanism before in pinacol-pinacolone rearrangement. What are the ...
user avatar
  • 1
1 vote
0 answers
58 views

Does 3-hydroxy-penta-2-one give positive Tollen's test? [duplicate]

I know that alpha hydroxy ketones that can tautomerise to an aldehyde give positive Tollen's test because an aldehyde gives a positive Tollen's test. This molecule however doesn't tautomerise (or ...
user avatar
-2 votes
0 answers
30 views

What's the hybridization of Cl in a primary haloalkane? [duplicate]

What is the hybridization of a Cl atom with its three lone pairs of electrons singly bonded to one C atom in a haloalkane?
user avatar
1 vote
1 answer
50 views

Can I synthesize 4-aminophenol and/or acetic anhydride at home?

I am going to try to synthesize acetaminophen as a possible science fair project, or just for fun, but doing it with precursors to the precursors of it might be more fun for myself then just using the ...
user avatar
  • 19
0 votes
0 answers
17 views

Does formal charge impact electron donation and withdrawal?

Does an atom with a positive formal charge withdraw more electrons than that atom without formal charge, due to the extra positive charge on the atom? For example, I know the carbonyl group becomes ...
user avatar
  • 75
2 votes
2 answers
61 views

Reactivity of 1-bromo-4-tert-butylcyclohexane isomers with methanol

(1s,4s)-1-bromo-4-tert-butylcyclohexane (1) and (1r,4r)-1-bromo-4-tert-butylcyclohexane (2) are heated (E2) with $\ce{NaOCH3}/\ce{CH3OH}.$ Which isomer will react faster? What will change when $\ce{...
user avatar
1 vote
0 answers
35 views

What happens to polymers under high pressure?

What happens when you have polymers under high pressure? My very sketchy thoughts of polymers are that they can be thought of tangles of carbon chains surrounded by hydrogen, but that some polymers ...
user avatar
  • 119
-1 votes
1 answer
120 views

Reaction of 1,3 diphenyl propane with alkaline potassium permanganate followed by acidification

Will the product be just benzoic acid? If yes how does this reaction proceed Normally alkyl group substituted benzene ring seems to give benzoic acid irrespective of chain length However is it true ...
user avatar
3 votes
2 answers
354 views

Why are radicals considered electron deficient?

I have often read that radicals are electron-deficient and are therefore stabilized by things like electron-donating groups (EDGs) and hyperconjugation. However, today I learned that electron-...
user avatar
  • 75
0 votes
0 answers
32 views

Does the solvent used affect basic strength?

In this question, it is explained how basicity and nucleophilicity are different and how the solvent used affects nuclephilicity. What I wondered was whether there would be a difference in the basic ...
user avatar
  • 79
0 votes
1 answer
46 views

How much Calcium Hydroxide to manufacture calcium formate?

First, I have no experience with stoichiometry. I currently manufacture calcium formate for a specific use because here in my country, it is very difficult to get calcium formate in small quantities. ...
user avatar
-3 votes
0 answers
58 views

Acetone Volume Increasing [closed]

I had 230ml acetone stored in plastic container for today as I didn't have any glass container at the moment & I noticed that now acetone level is at top of bottle nearly 250ml increased volume. ...
user avatar
  • 1
-2 votes
0 answers
55 views

Why Aren't Alcohols Weak Bases?

I was reading about alcohols being weak acids because they are deprotonated in water, presumably because the $O-H$ bond is being overcome by hydrogen bonding between $H$ in the hydroxyl group and $O$ ...
user avatar
  • 105
8 votes
1 answer
222 views

Is RCOOH + H2SO4 + heat a viable alternative to RCOCl + AlCl3 in Friedel-Crafts acylation?

Can concentrated strong acid like H₂SO₄ be used to protonate a carboxylic acid to RC(OH)₂⁺, forming RCO⁺ by removal of H₂O, analogous to the reaction with nitric acid to produce nitronium? Would this ...
user avatar
2 votes
1 answer
104 views

Is hydrolysis of acid chlorides still favored when the resulting acids cannot donate their protons?

For example, take the reaction: MeCOCl + H₂O -> MeCOOH + HCl Bonds broken: C-Cl + H-O -> 330 + 460 = 790 kJ/mol Bonds formed: C-O + H-Cl -> 350 + 432 = 782 kJ/mol I realize that BDE is only ...
user avatar
1 vote
0 answers
48 views

Fragmentation behavior of spots in TLC

I tested multiple development using eluent condition hexane + 1% of ethyl acetate. Then I observed kind of fragmentation of spot. I'm not sure, but I guess that successive spots are from the skyblue ...
user avatar
  • 767
-2 votes
0 answers
10 views

Source to practice organic chemistry nomenclature [duplicate]

Is there a website or a big PDF to practice just nomenclature of organic compounds. thanks.
user avatar
  • 7
0 votes
0 answers
45 views

Why does 1-ethylidene-2,3-dimethylcyclopropane exhibit cis-trans isomerism?

I think the carbons 2 and 3 have different configuration according to the CIP rules which makes the groups different: Am I correct? Is there any official criteria regarding these cases ?
user avatar
  • 147
0 votes
0 answers
39 views

Does heat increase the hydrolysis of urea hydrochloride?

The preparation of ammonium chloride by reacting urea with HCl produce urea hydrochloride the reaction take too much time to get ammonium chloride depending on ratios. So can heat increase the ...
user avatar
2 votes
0 answers
22 views

Using neutral or basic alumina in column chromatography for purification of amines

I am conducting a synthesis involving amines, and it is found that some spots still hardly moves from the starting point in spite of the dichloromethane 9:methanol 1 eluent condition. Addition of ...
user avatar
  • 767
0 votes
0 answers
23 views

How do I calculate the empirical formula when ash is present in the percentage composition?

I am trying to calculate a chemical formula. How do I calculate the empirical formula when ash is present in the percentage composition? Example- C- 47.7% H- 7.2% N- 1.8% S- 0.9% O- 38.0% Ash- 4.4% ...
user avatar
-1 votes
1 answer
41 views

How does Calanolide A react with NaOH solution? [closed]

Calanolide A is an anti-HIV drug I assume the ester group, phenolic hydroxyl group and carboxyl group formed by hydrolysis in the molecule can react with NaOH. Is that correct? How many moles of NaOH ...
user avatar
3 votes
0 answers
42 views

O-C-O bond angles in carboxylates vs carboxylic acids?

I am wondering how different the O-C-O angle is in a carboxylate vs its acid form. Does it (noticeably) increase because of the electron-electron repulsion caused by an additional lone pair? Bond ...
user avatar
1 vote
0 answers
23 views

Is LCP working well in real experiments? or is it more of an oversimplified principle?

I have a question for people who have applied Le Chatelier's principle (LCP) to their experiment or have knowledge about people who have done that to increase the yield. Essentially, I am curious &...
user avatar

1
2 3 4 5
192