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2 votes

Reaction of 1,3-butadiene with HBr in the presence of peroxides

The reaction of 1,3-butadiene (1) with HBr/peroxide (ascaridole, 5) in the absence of solvent was investigated by Kharasch[1] in 1936. With a reaction time of 2 hours at -78o, the kinetic bromide 3 ...
user55119's user avatar
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2 votes

Synthesis of racemic nicotine

I got the answer key. Problem is, I didn't think it would be possible to hydrogenate the ketone functionality to the alcohol using Pd/C. Never seen it. Rest makes sense, SN1 reaction for the iodine ...
Mäßige's user avatar
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6 votes

Synthesis of racemic nicotine

You are correct about the Claisen condensation and the decarboxylation. You can't solve the synthesis as shown because there are too many steps. Ethyl nicotinate (1) and the lactam 2 condense to form ...
user55119's user avatar
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3 votes

Synthesis of racemic nicotine

It seems you are in right track. I also wasn't sure why that last two steps are necessary. I have filled the necessary structures of your scheme since you have shown your understanding of the ...
Mathew Mahindaratne's user avatar
0 votes

By what mechanism might the decarboxylation of sodium benzoate in the presence of heat and sodium lye occur?

I know this is probably a bit late to mention but ill mention it anyways. I preformed this exact reaction to maybe shed a little light on the mechanism by looking at the by-products formed in the ...
Ozcanium oz's user avatar
2 votes
Accepted

Mechanism of Zn + NaOH?

To develop Mithoron's information, it can be said that the reaction of zinc with $\ce{NaOH}$ does not produce the logical and expected sodium zincate $\ce{Na2ZnO2}$ as believed without proof in the ...
Maurice's user avatar
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1 vote

Is dissolution of NH4Cl in water a physical change or chemical change?

The solution of $\ce{NH4Cl}$ in water is both a physical and a chemical change. The $\ce{NH4Cl}$ ionizes in water, making $\ce{NH4+(aq) + Cl-(aq)}$, a chemical change. Some effects of this change: ...
DrMoishe Pippik's user avatar
1 vote

Is dissolution of NH4Cl in water a physical change or chemical change?

As described here, the boundary between "physical" and "chemical" reactions is indistinct. Even so, the breaking of ionic bonds necessary to separate the ammonium and chloride iins ...
Oscar Lanzi's user avatar
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