Predict the products formed when cyclohexanecarbaldehyde
reacts ...

Question

Predict the products formed when cyclohexanecarbaldehyde 
reacts with the following reagents.
(a) PhMgBr, then H3O+

Accepted Answer

Hey everyone and welcome back in today's video, we are going to draw the products obtained by the reaction between psycho pants in Karbala hide and the regions shown below metal magnesium bromide than acidic work up. So we can first of all draw psycho pension Karbala hide. As the name suggests, we have our cycle plantain ring so we can draw a five member dring. And now because it's Karbala hide, it just implies that we have an al to hide group bonded to our ring. So we're going to draw a ch Oh so that's how we're starting material. As the problem suggests, first of all, we are going to treat it with metal magnesium bromide. So we have C three MGB R. And let's essentially draw it as H three C m G B R. For the purposes of the mechanism. We recognize that this reaction is the Green Yard region because it's an alcohol group bonded to magnesium bromide because it's the graveyard region. We have to keep in mind that due to the fact that this bond is polarized towards carbon, since magnesium is strongly electro positive, there is a high electron density which will allow us to perform that nikola pilic attack at the electrolytic position. And then we will break our pi bond and form our elk oxide and ion. So now we are going to have the following fragments. First of all, we're going to create that carbon carbon bond. Right? And now this original carbon will have oxygen with a negative charge because we have transferred these electrons onto oxygen. There is no necessity to show that implicit hydrogen instead, we are going to add our metal substitution from the Green Yard reaction. In addition to that magnesium bromide is actually an ion which can be added adjacent to our elk oxide. So that we can clearly see that we don't lose it. We can essentially add M G B R with a positive charge. Okay, because that's an ionic interaction. However, generally this is not necessary, but just in case we can actually add it. And now in the next step, we are performing an acidic world cup And in that acidic world cup we control another arrow to clearly indicate that we're using hydro ni. Um This is our second reaction. We are essentially protein ating our elk oxide. So what we're going to do here, we're going to simply draw hydro ni. Um and we'll show that elk oxide essentially captures that proton. And this is how we are forming our final product, which is essentially an alcohol. So now we have our alcohol group. This is our secondary alcohol. Just as expected by the Green Yard reaction. We may label this as our reaction scheme and we may look at our steps once again. So we're starting with an alga hide. We understand that the starting material where basically the starting regent is the Green yard reactant and we are going to perform that attack the electrical position form our Alcock said. And I on we have added our metal substitution. And then, after the acidic work up, we're forming our secondary alcohol out of an AL to hide, just as expected. And based on this reaction scheme, the correct answer to the multiple choice question is A. B. However, if you have any questions, don't hesitate to leave a comment down below. Thank you for watching.

Predict the products formed when cyclohexanecarbaldehyde reacts with the following reagents. (a) PhMgBr, then H3O+

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