Can the alcohol (CH₃)₃COH be formed by the reduction of an aldehyde or ketone? Why or why not?

Question

Accepted Answer

Welcome back. Everyone. Here's our next problem. True or false. The alcohol CH three CH two C and in parenthesis, ch three in parentheses. Ohch two ch three can be formed when an aldehyde or ketone undergoes a reduction reaction. Justify your action. Justify your answer. Excuse me. A true. The alcohol can be formed from the reduction of three pinon A ketone B. True. The alcohol can be formed from the production of two pentagon A ketone C false. The alcohol cannot be formed from the reduction of an alde hydro ketone because it is a tertiary alcohol or D false. The alcohol cannot be formed from the reduction of an alde hydro ketone because it is a quaternary alcohol. Well, first of all, we can rule one out right away. There is no such thing as a quaternary alcohol in choice D because a quaternary, a carbon that a quaternary carbon will have four bonds to other carbons and therefore wouldn't have room for an alcohol group. So choice D just doesn't even make any sense. So let's look at our other answer. Choices and think about reduction reactions of aldehydes and ketones. So an aldehyde can be reduced to form a primary alcohol, while a ketone can be reduced to form a secondary alcohol. So we need to look at the structure of the molecule we're given and see if it's either a primary or secondary alcohol. What about a tertiary alcohol? Well, a tertiary alcohol means our carbon that's bonded to the hydroxy group has three R groups. So if it has three R groups, it could not have come from an aldehyde or a ketone. Because what defines those functional groups, ac O double bond in a tertiary alcohol, that carbon cannot form ac O double bond, it only has space for one bond due to the three R groups. So a tertiary alcohol only has room for one co bond and therefore cannot have been produced from the reduction of an alde hydro ketone. So what we need to do is look at the structure we're given and determine what kind of alcohol it is. Well, let's count how many carbons there are outside of the parentheses because we know that in a condensed structure, like we're given groups in parentheses are branches. So we have 12345 carbons in our main chain. So we'll draw a five carbon chain and a skeletal structure. So 12345 and then on the third carbon from the left, right now, I'm just going left to right. Not trying to figure out priorities here. 123, we have a methyl group. So on our third carbon, we have a methyl group and then we have right next to the parentheses. Oh So that hydroxy group is on that same carbon as the methyl group. So let's add that on. So the carbon that has the oxygen has the oh group attached to it also has three are groups, it has two ethyl branches, one on either side plus the methyl branch. So this is a tertiary alcohol and therefore, it cannot have been produced V an aldehyde or ketone. So our answer is going to be choice C false. The alcohol cannot be formed from the reduction of an aldehyde or ketone because it is a tertiary alcohol. So that will be our answer. And then we look at our other answer. Choices just to be thorough, we've already ruled out. Choice D choice A is true. So we know that's incorrect. And it's saying it can be produced from A P uh ketone and choice B also says true that it can be produced from a ketone. So that's why choice A and B are incorrect. So once again, our answer is choice C false due to the fact that it's a tertiary alcohol. See you in the next video.

Can the alcohol (CH₃)₃COH be formed by the reduction of an aldehyde or ketone? Why or why not?

Verified video answer for a similar problem:

Key Concepts

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Tertiary Alcohols

Can the alcohol (CH3)3COH be formed by the reduction of an aldehyde or ketone? Why or why not?

Verified video answer for a similar problem:

Key Concepts

Reduction Reactions

Aldehydes and Ketones

Tertiary Alcohols

Can the alcohol (CH₃)₃COH be formed by the reduction of an aldehyde or ketone? Why or why not?