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.
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0answers
10 views
What is the tense of chemical equation?
I am new so bear with me.
Is a equation states a happened reaction or a reaction that happens or what
tHIS WILL HELP ME UNDERSTAND CHEMISTRY BETTER PLS HELP.
What thoughts can i give on this and ...
2
votes
0answers
5 views
Formamide and Hoffmann Bromamide Reaction
I encountered a problem to identify the compound which does not give Hoffmann bromamide degradation reaction. One of the options was formamide, and it was given as the answer.
Why can't formamide ...
0
votes
0answers
8 views
Which of the following show hyperconjugation
None of the given compounds have any alpha hydrogen to show hyperconjugation, but the given answer is c.
1
vote
0answers
11 views
electron donation affecting carbonyl bond strength
I have been told that electron donation decreases carbonyl bond strength and thus decreases the bond stretch frequency, but electron withdrawal increases it.
This does not seem to make any sense as ...
0
votes
0answers
9 views
Specific solvents for Wacker-Oxidation
I am currently working on a way to perform a Wacker oxidation of 1-Dodecene into 2-Dodecanone in a continous reaction where it flows through a benchtop NMR, which allows me to monitor the reaction ...
0
votes
0answers
17 views
How does conversion of a free radical to a carbonyl compound take place? Unsure about mechanism
Came across a question that talked about fragmentation of peroxyesters, about the peroxide linkage of course.
After the fragmentation of the peroxyester was done, it gave out three products (2 being ...
0
votes
0answers
19 views
Polymer that has aldehyde and carboxylic acid functional group
I'm currently identifying an unknown polymer sample and I found out from raman spectroscopy that it may contain aldehyde and carboxylic acid functional groups (and possibly ketone too). I was looking ...
-1
votes
1answer
40 views
How to keep raspberry ketone from forming crystals again after dissolving in alcohol?
I dissolved raspberry ketone 700 mg in 10 ml of 99% isopropyl alcohol. The solubility according to pub chem is 1 g/ml. After dissolving, I added room temperature water to bring the final volume to 70 ...
-3
votes
0answers
24 views
What would this reaction produce? [on hold]
What would this reaction produce? Would it even produce anything? Since NH2CH3HCL would have to many hydrogens?
-1
votes
0answers
32 views
how are peroxyesters different from other esters? [on hold]
I was questioned regarding the thermal decomposition pathways for "peroxyester" google search seems to tell nothing about it. what is it? how is it different in terms of reactions from other esters?
-1
votes
0answers
22 views
visualising TlC plates under UV light [on hold]
Does each group of compounds have a specific colour it exhibits under UV light? eg what olour in general would you expect for terpenes, alkaloids, phenolics etc under the UV light. Is there a general ...
-1
votes
1answer
26 views
2,4 dihydroxy benzoate formation
When resorcinol and potassium hydrogen carbonate are added to each other in acidic conditions together with water, 2,4-dihydroxybenzoate is formed.
What kind of reaction is this? and what is a ...
8
votes
4answers
479 views
-1
votes
0answers
21 views
Provide a test and the net ionic equation for the tests used [on hold]
Provide a test (including reagents needed and what to look for if it gives a positive result), and the net ionic equation for the tests used, to distinguish between the following compounds:
NiCl2 or ...
-1
votes
0answers
10 views
How To Decide Hyperconjugative (+H,-H), Resonance (+R,-R) And Inductive (+I,-I) Effect Of Any Group Relative To Any Other Group [on hold]
I WAS SOLVING A COUPLE OF QUESTIONS ON ACIDIC AND BASIC BEHAVIOR FROM AN ORGANIC CHEMISTRY BOOK AND WAS FACING DIFFICULTY SOLVING SOME QUESTIONS BASED ON THE AFORESAID CONCEPT.
I WOULD REALLY BE ...
1
vote
0answers
31 views
How many moles of methyl iodide will be consumed by one mole of crixivan?
My take on this question : a total of 5 moles of $\ce{CH3I}$ should be consumed.
The oxygen atoms in the $\ce{2 OH}$ groups each have a lone pair of electrons. They should displace $\ce{I-}$ from ...
0
votes
0answers
17 views
E. coli biochemistry ? question or organic chemistry question [on hold]
If there is E. Coli in manure. And heating up E coli will kill it off.
Would boiling/heating fresh manure kill any E. Coli permanently making it safer for a fertilizer. Or would it return and thrive.
0
votes
1answer
32 views
Reaction of diacetyl with acid
What happens when diacetyl, that is, butan-2,3-dione is treated with acid?
I guess there would be acid catalysed aldol formation.
But what would the final product be? I can see too many ...
0
votes
1answer
34 views
Carbonation of Grignard reagent with a carbonyl group present in it
Here's the question in my book (see picture)
Option A is a standard reaction which gives a carboxylic acid.
Option B is definitely wrong because an acid base reaction will take place and CH4 will be ...
-1
votes
0answers
13 views
6,6-dimethyl-5-hydroxy-4-oxo-3-phenylpyrrolidino-[1,2-b]pyrazole structure [on hold]
The exact question was "structure of product of Wolff-Kishner reduction of 6,6-dimethyl-5-hydroxy-4-oxo-3-phenylpyrrolidino-[1,2-b]pyrazole". Wolff-Kishner reduction should be easy enough to ...
-1
votes
0answers
16 views
How do you “test” the Citric Acid Cycle and see all of the intermediates produced as predicted? [on hold]
Could anyone give me an experiment where I can test the Citric Acid Cycle?
-1
votes
0answers
37 views
Arrange the following in increasing order of contribution to resonance hybrid [on hold]
Arrange the following in the increasing order of their stability
$$
\underset{\text{(I)}}{\ce{CH2=\overset{+}{N}=\overset{-}{N}}} \quad
\underset{\text{(II)}}{\ce{\overset{+}{C}H2-N=\overset{-}{...
-2
votes
0answers
15 views
chemical equation [on hold]
A butyl rubber bag of total volume 3.0 m3
is used as a biogas digester. Each day it is
fed an input of 0.20 m3
of slurry, of which4.0 kg is volatile solids, and a corresponding volume of digested ...
-1
votes
0answers
15 views
Help with my lab please! [on hold]
For my lab, I am changing the concentration of 1-hexene and hydrogenating it. The issue is, I was going to find rate of reaction, but I don't know how to monitor the time, so i don't think finding the ...
1
vote
0answers
17 views
How to recreate bioluminescence in fireflies in a lab?
I have several mg/mL of D-luciferin, luciferase (firefly), ATP solution (25 mmol) and MgSO4 (for the mg2+ ions). The experiment has to be done in cuvettes of 2,5 mL (if I get any results, it will be ...
0
votes
0answers
27 views
Which of the 2 structures is more stable?
As far as I know, alkenes with more number of hyperconjugating structures are more stable. Hyperconjugation has a greater stablizing effect than Inductive effect. So, (d) should be more stable as it ...
12
votes
2answers
1k views
Melting point of aspirin, contradicting sources
Querying wolfram alpha for the melting point of aspirin (link) returns $\pu{140 °C}$. The Wikipedia page for Aspirin lists $\pu{136 °C}$ instead, citing this book.
How am I supposed to know which ...
8
votes
1answer
257 views
Does the Location of Line-Dash-Wedge Notations Matter?
In Line-Dash-Wedge notation, when illustrating that an atom or bond is directed towards or away from the viewer (solid triangle for coming forward, dotted lines for going back), does the location of ...
0
votes
0answers
30 views
Iodoform on acetone gives one product?
During the Iodoform reaction of acetone why does the second iodine addition happen on the carbon that already has undergone substitution instead of the other carbon?
-2
votes
0answers
25 views
Haloalkanes and Haloarenes [on hold]
What are the product that we get on reaction of ethylene glycol with excess HI?
Confused that both OH will go substitution or elimination then addition
0
votes
0answers
19 views
Which of the following sustituents has the highest priority according to sequence rule? [on hold]
A) - CH(OCH3)2
B) - COCH3
I aswered it b ,but my teacher says its a.
I can't understand why !!
I am sure it is b!!
Please, explain for me.
-1
votes
0answers
16 views
-2
votes
0answers
48 views
How would this reaction go? [on hold]
I feel like this would be a simple reaction, but I'm not sure if there will be secondary things, like unwanted by-products such as HBr, Br2, halogenation of random molecules, etc.
2
votes
0answers
15 views
Diazo Coupling reaction with para substituted phenol?
Usually Diazo coupling occurs at para position until the para position is occupied , in which case coupling occurs at ortho position .
While solving questions I found in both the cases as shown , ...
0
votes
0answers
40 views
Melting point in hydrocarbons
Checking out the molecular structure and the melting points of various hydrocarbons I concluded:
1)branching increases the melting point of a hydrocarbon molecule
2)symmetry increases the melting ...
1
vote
0answers
40 views
Antiaromaticity can be explained by Hückel method?
Pentalene is one of the most famous antiaromatic molecules. But I obtained its energy of $\pi$ system as $8\alpha+10.46\beta$ by Hückel method (with a bit complicated but straightforward calculation). ...
0
votes
0answers
22 views
Replace benzylic hydrogen with NO2 [on hold]
I don't know any method to replace the benzylic hydrogen from, say, toulene. Please suggest one.
-2
votes
0answers
22 views
Aromaticity when lone pair atoms present [duplicate]
I am having trouble identifying aromatic compounds when elements other than carbon, like oxygen, nitrogen are present.
I know the (4n+2) Huckel rule of electrons required for aromatic/anti aromatic ...
2
votes
0answers
18 views
Can Weinreb amides be used to form 1,3 dicarbonyl compounds?
Weinreb amides are useful in reducing acid chlorides (and esters) to form ketones due to the fact that the more reactive keto group is unmasked only after treatment with acid and water, which destroys ...
1
vote
0answers
22 views
Deuteration of following enone - mechanism?
What happens when the above compound is subjected to DCl in MeOD? As a result of tautomerism, I'd expect at least 7H atoms, two alpha to carbonyl carbon (right side), and five at gamma position (two ...
-1
votes
0answers
16 views
How to deal with coordinate bonds while dealing with formal charges?
When we calculate the formal charge of an atom in a molecule we consider the non-bonding pair as 2 electrons and any covalent bond as 1 electron. Ok then what about dative bonds,how many electrons do ...
-2
votes
1answer
24 views
Reaction between copper sulfate and iron [closed]
If 1.92g of iron reacted with a solution containing 14.00g of copper sulfate calculate:
a. the moles of iron added?
b. the number of moles of copper deposited?
c. the mass of copper deposited?
0
votes
0answers
22 views
t-Boc protection of amide (urea)
I'm trying to prepare protected urea and I'd like to protect it with some alkali stable PG. Is it possible to protect urea with t-Boc? Or is there another way to get boc-protected urea?
-1
votes
1answer
45 views
Ester of glycerol and glyceric acid
What is the ester of glycerol ($\ce{C3H8O3}$) and glyceric acid ($\ce{C3H6O4}$)? I couldn't find any information about it online, so is this reaction even possible?
I'm not sure what would happen, ...
7
votes
1answer
68 views
What could cause a peak to split into 2 resonances as temperature increases in NMR spectroscopy
I understand that some peaks may coalesce upon an increase in temperature due to an increase in free rotation, this does occur with some peaks in my data. Why might you see a peak split into two other ...
-1
votes
0answers
16 views
When naming an organic molecule - which group has the highest priority: methyl or methylidene? [closed]
I have been tasked with naming Myrcene. (see image below)
Which of the following names is correct?
7-methyl-3-methylidene-oct-1,6-diene
or
3-methylidene-7-methyl-oct-1,6-diene
Thank you in ...
3
votes
0answers
30 views
Grignard reaction on electron-poor benzyl bromides
I am trying to prepare a Grignard reagent from 4-nitrobenzyl bromide but the reaction just doesn't work. My conditions are:
-10mL of THF (anhydrous)
-7.04 mmol of 4-nitrobenzyl bromide
-7.04 mmol ...
-1
votes
1answer
19 views
Substitution reactions [closed]
In chlorination of methane, why do chlorine atoms replace hydrogen atoms? IS it because those chlorine radicals are so reactive that is simply happens?
Why does this substitution reaction occur?
...
-1
votes
0answers
18 views
Please explain with mechanism [closed]
Can you please explain what will happen in this reaction with mechanism as fast as you can? It's important.
-1
votes
0answers
18 views
Formation of ethyl 2-(dimethoxyphosphoryl)acetate
Hi I am just wondering what the byproduct of this reaction is is it methyl bromide?
Thanks - John
