What reagents are needed to carry out the following syntheses?...

Question

What reagents are needed to carry out the following syntheses?

Diagram illustrating various organic compounds and their reactions, highlighting reagents for syntheses involving bromine.

Accepted Answer

Hey, everyone. And welcome back in today's video. We're going to determine the regions needed for the following reactions. The starting material is an alkene. In the first reaction, we are producing a primary alcohol out of it. In the second reaction, we are producing a secondary alcohol out of it. And then the third reaction, we are producing an ether out of it. Now, the answer choices are a reaction. Number one borane in the presence of tetra hydro Furin, then hydrogen peroxide and hydroxide. Number two, Sulfuric acid and water. Number three, sulfuric acid and methanol answer B. Reaction number one requires sulfuric acid and water. Reaction. Number two requires borane in the presence of petro hydro Furin. Then hydrogen peroxide and hydroxide reaction. Number three, sulfuric acid and methanol option C Reaction # one, Sulfuric Acid and Methanol. Number two, sulfuric acid and water. Number three, boring and the presence of tetra hydro fin then hydrogen peroxide and hydroxide. Option D reaction number one requires boring in the presence of tetrahydrofolate and hydroxide. Number two sulfuric acid and methanol. Number three, sulfuric acid and water. So first of all, we understand that we are starting with an alkene. And in the first reaction, we are producing a primary alcohol, we may notice that in the first reaction, we are adding hydrogen to a more substituted position and we are adding our o age group at a less substituted position, which essentially tells us that we are performing an anti Markov Kov region chemistry reaction. Let's remember that primary alcohols can be produced out of an out of keys using the N C Marconi of Radio Chemistry. As long as we use Hydro Bora oxidation. So you can label that for the first reaction we are interested in hydro oxidation, which requires us to use two steps. Number one, we're using boring in the presence of tetra hydro which is our solvent in this reaction. Number two, we're using hydrogen peroxide hydroxide and sometimes we can add water even though you may already understand that hydrogen peroxide is a solution which already has water, but sometimes you will see water present. So we can say that for the first reaction, we have choices between A and D, right? We want to use boring while B and C those choices have sulfuric acid and water or methanol. So these do not work for us. We can just exclude options. B and C, well done. So let's keep going. Now for reaction number two, we are also producing an alcohol but it is a secondary alcohol and now hydrogen is added to a less substituted carbon. And our alcohol group is added to the more substituted one. So we are observing the Marconi of radio chemistry, Meaning reaction number two requires us to use a standard acid catalyzed hydration. And for such a reaction, we want to use a strong acid followed by the addition of water. So we want to use sulfuric acid H two S 04 and water, which essentially allows us to first of all proton our. So we are forming a more stable secondary carbo based on the Marconi of and then the water molecule acts as the nuclear file. Later on, it is derotated to give us our secondary alcohol. Well done. So between A and D for reaction number two, we definitely see that water is present in choice. A while option D has methanol. So, so far it looks like we are going with option A. But let's verify that. Now we are at reaction number three. In reaction number three, we are forming an ether. And let's remember that it's possible to do that if we essentially proton our Alcaine and form our secondary carbo Catron. So after the protonation stop, we want to add hydrogen to a less substituted carbon. So we are getting our secondary carbo Catron. And whenever a carbo is formed, we want to use a weak nu file. So that means we want to use a molecular form of methanol because we're adding metox side. So the oxygen attacks the carbo ion. And after the de protonation step, we can state minus H plus, we are forming our final product, which is indeed the that we are required to get. Now, of course, the protonation that required us to use sulfuric acid, right? We want to use a strong acid just as in reaction number two. So as we said, reaction number three, we should have sulfuric acid And then Methanol CH 30 H. So that indeed corresponds to the answer choice. A because we have sulfuric acid and methanol well done. So we are ready to conclude that the correct answer to this multiple choice question is a Reaction. # one requires us to use hydration oxidation where we use borane and tetra hydro, then hydrogen peroxide and hydroxide. Reaction number two requires us to use sulfuric acid and water. And a reaction number three, sulfuric acid and methanol, we have labeled our final choice A as the correct answer. And thank you for watching. I hope to see you in the next video.

What reagents are needed to carry out the following syntheses?

Key Concepts

Reagents in Organic Synthesis

Reaction Mechanisms

Functional Groups

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