Questions tagged [synthesis]
Synthesis is a purposeful execution of chemical reactions to obtain the desired product. Applies to long and complex natural product syntheses as much as to short one or two-step syntheses. This also covers synthetic problem sets and retrosynthetic analyses.
78
questions
16
votes
4
answers
5k
views
Why are solid phase organics often conjugated to HCl?
Many uncharged organic compounds are sold in solid phase with HCl conjugate - e.g. the antihistamine diphenhydramine.HCl or the derivitizing agent pentafluorobenzyl hydroxylamine.HCl, among many ...
4
votes
2
answers
15k
views
How to prepare potassium cyanide from potassium ferrocyanide
How do we prepare potassium cyanide from potassium ferrocyanide?
It is something which I am curious about, but cannot find the answer. I am studying inorganic chemistry but this reaction cannot be ...
17
votes
2
answers
50k
views
Reactions of alcohol with sulfuric acid
I knew two chemical reactions of alcohol with sulfuric acid
$\ce{CH3CH2OH + H2SO4 -> CH2CH2}$
Here product is having a double bond (ethene) and this reaction happens at 443 K temperature.
$\ce{...
7
votes
1
answer
15k
views
Preparation of oxalic acid from acetylene
I think that using ozonolysis would be a good idea to prepare oxalic acid from acetylene. Upon ozonolysis of acetylene we would get glyoxal:
$$\ce{O=CH-HC=O}$$
Would I obtain the oxalic acid upon ...
24
votes
1
answer
1k
views
Interlocked cyclic compounds
Being new to chemistry, there may ought to be some properties I couldn't understand fully. One of them being cyclic compounds.
One particular question about this is, whether these cyclic compounds, ...
23
votes
3
answers
585
views
Energy-efficiency aside, what are the chemical constraints on CO₂ capture and methanation?
Synthesising $\ce {CH4}$ from air and water (in a non-biological process) has been proposed as one form of energy storage. What are the chemical constraints at play here? That is to say, what sort of ...
21
votes
2
answers
5k
views
What is the mechanism of the reaction between hexane-2,5-dione and nitrous acid?
I don't understand the mechanism of the first reaction; I tried different ways but I can usually find how to make the ring without the double bonds, but it's obviously not the right thing; I think ...
11
votes
1
answer
12k
views
Nitration of pyrrole with sulfuric and nitric acids
Would 2,5-dinitropyrrole be a product of nitration of pyrrole with $\ce{H2SO4/HNO3}$? It seems that 2,5-dinitropyrrole is not formed when using $\ce{Ac2O/HNO3}$ (ref 1). Is this just because of the ...
8
votes
2
answers
596
views
What does the "h" "k" and "(5.2.2.02,6)" mean in dibenzo(h,k)-4-oxatricyclo(5.2.2.02,6)undec-8,10- diene-3, 5-dione?
I am preparing to do an experiment that involves synthesizing dibenzo(h,k)-4-oxatricyclo(5.2.2.02,6)undec-8,10- diene-3, 5-dione via a Diels-Alder reaction.
Could someone please explain the ...
5
votes
1
answer
261
views
Has tellurium(II) iodide been properly characterized ever?
According to Wikipedia, tellurium tetraiodide decomposes on heating:
$$\ce{TeI4 ->[\Delta] TeI2 + I2}$$
However, the reaction is somewhat wrong as according to this 2008 paper:
Solid tellurium ...
11
votes
1
answer
476
views
Were gold(II) complexes synthesized for the first time in 2017?
Recently in the Google news feed, I discovered this news:
Gold stabilized in very rare oxidation state +II
Missing golden link found: Divalent gold complex isolated for the
first time in a ...
11
votes
3
answers
2k
views
Getting 3,4-dimethylhex-3-ene from but-2-ene
How can one get 3,4-dimethylhex-3-ene from but-2-ene ?
$\hskip2in$
Using $\ce{Br_2}$ then two equivalents of $\ce{CH_3CH_2MgBr}$, I can get the corresponding alkane (3,4-dimethylhexane) but I don't ...
7
votes
1
answer
3k
views
Synthesis of 2-methyl-4-nitrophenol from benzene?
Benzene first reacts with the reagents $\ce{CH3Cl/AlCl3}$, to attach a methyl ($\ce{CH3}$) group to the benzene ring.
Then I suggested reacting with $\ce{OH-}$. Because the methyl group is an ...
6
votes
1
answer
2k
views
Can I synthesize iron acetate like this?
The oxidation state of the iron doesn't matter too much; I am just trying to make an attractive red-brown ink. Here are some instructions I prescribed to a friend.
Here's an approximately decent ...
5
votes
3
answers
5k
views
Can salicylic acid be synthesized from salicylaldehyde?
You have a bottle of salicylaldehyde. And you want to make salicylic acid from salicylaldehyde. You can use all reagents and catalyst to make salicylic acid.
I think salicylic acid can be synthesized ...