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It has been found that B-dicarbonyl compounds have a greater concentration of the enol form over the keto form: This can be explained by: the C-C of the enol is con...

Question

It has been found that B-dicarbonyl compounds have a greater concentration of the enol form over the keto form: This can be explained by: the C-C of the enol is conjugated with the carbonyl group. the-OH of the enol can hydrogen bond to the oxygen of the nearby carbonyl group. both ofthese answers are true none of the choices are trueHow could you perform the following crossed-Aldol reaction to obtain the product selectively?OHA. Use sodium methoxide. Bs_ Use potassium tert-butoxide_ C Use aceti

It has been found that B-dicarbonyl compounds have a greater concentration of the enol form over the keto form: This can be explained by: the C-C of the enol is conjugated with the carbonyl group. the-OH of the enol can hydrogen bond to the oxygen of the nearby carbonyl group. both ofthese answers are true none of the choices are true How could you perform the following crossed-Aldol reaction to obtain the product selectively? OH A. Use sodium methoxide. Bs_ Use potassium tert-butoxide_ C Use acetic acid_ D_ Use lithium diisopropylamide



Answers

Keto-enol tautomerism is a special type of isomerism involving the 1,3 shift of a proton. There exists an equilibrium between keto and enol forms. In most cases keto form is more stable while in certain cases enol form is favoured. The identification of the two enol forms of $\mathrm{CH}_{3} \mathrm{COCH}_{2} \mathrm{COCH}_{2} \mathrm{CH}_{3}$ (Hexane-2,4-dione) can be established by the study of (a) intra molecular H-bonding (b) colour reaction of the enol with neutral $\mathrm{FeCl}_{3}$ (c) kinetics of the formation of the enol (d) ozonolysis

As we know that, as we know that L I L let food L I L at for can reduce again reduced and or two. What do can reduce and not a group. But here in this problem, it is given that And I air let four cannot reduce an auto group. So this is in an incorrect statement. two according to the option option C. It's correct answer option C. H. Direct answer for this problem. I hope you understand the solution of this problem.

Which is not a automatic pair among the following. So which one is this? In that problematic faith here, higher total isolation can takes place. So this hydrogen will go to this oxygen and taliban will come here and then we get this structure right? And that the molecules this hydrogen will go at this nitrogen and carbon will come here, right. Only hydrogen isolate or oscillate in that communism. Double world will come here. This hydrogen will go ahead in that the molecule the molecule is the resonance not to the medicine because by electron will come here and this one will get transferred here. Right? So then we will get this structure. So this is the resonance, not communism. And in the Netherlands structure buy bonds is transferred, not hydrogen transfer. Okay, so correct or something. B. B. Okay, Thank you.

Here. Question number. Dean. He's How can the falling compounds were prepared from Carbonell compound that has one less carbon than their desired, but it so here a. And we come phone. We have to prepare, starting from the compound, which is having one less carbon than there. Dessert parent. So this starting material for the synthesis of the two carbon must have one carbon. We're starting with a compote. So here in the product to carbon atoms, at present, we have to start with a carbon one carbon atom, and it should be formal de hate. So Etch seen double Bond who h form really hate. And it is treated quickly with at CNN, followed by addition of hydrogen toe, the warned people born and for mission Oh, they required product. So formally Heidi, stricken on it, is treated with, and it's seen sodium Sign eight in presence, off as seat and the product formed. Ease Sino hygiene that is Etch See, It's true seen triple bond, and so in the form of Sino hygiene. One Carbon is interview used in the reactant, and the product should have one more covenant. So in the next step to beat the desired. Brought it to E. We have to do the In addition, off producen in prison, soft raining as get released and the product formed will be, oh oh, parties not disturbed. Then she each drove in in scenes and here at the People bond hydrogen is edit and by the final product will be this component in which one carbonless more and the name off the product is two amino beating. No, now for getting the bigger point. The starting material for the synthesis off this tree carbon compound must have two garments. Therefore, it must be a city. A settled the height addition off at sea and followed by how delicious off the resulting Sino hygiene forms their target. Monk, you so let us see how this phone as it'll behaviors to starting component here. So it should be ch dream, which is having one carbon less than the product. Okay and behaving Cilic date on. After that it is cheated weed sodium sign eight in presence off at shell and by this the product form this siege tree C h seen triple warned and and which group is radically it is to hear. And after that haggle is's dilute a seat mistaken. And for your day, Caijing and the final product will be see each tree C H, which is as such. It is not disturbed. Drancy and group is converted to si or it by this hundreds. And this is the report product. Leave off the product is two hydroxy hi. Drug scene? Probably not. No, I guess it. So in the product, we have one carbon more and that is introduced in the form off CNN in the molecule. So starting compound should have one carbon less than the bullet.

The question is a car will compound see if I can so Canada reaction but can be designed for reaction product. So we know that in their december reaction we get as far as the final product, this one, so Molecule will be CS three entrees 3. See CS. So this molecule do not have any hellfire because that's why it can give candy generally. So if this molecule, is it treated with that same co regent, then we will get Esther and after we like that that is given in the first option and in the B and C option there is a side and and also it is not possible. Separate option will be okay.


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