6.41 Predict whether each of the following carbocations will rearrange. If so, draw the expected rearrangement...
ct whether each of the following carbocations will rearrange. If so, draw the expected rearrangement using curved arowrs
Which Carbocations are expected to rearrange? if
rearrangement can occur, draw the expected rearrangement.
carbocation (s) s expected to rearrange? If rearrangement can occur, draw the ex nements
need more PRACTICE? Try Problem 6.48 Reaction Arrows ht notice that some steps deawn Predict whether each of the following carbocations will rearrange. If so, draw the expected rearrangement using curved arrows. (7) roce (e) (a) (b) (c) (d) (1) (g) maction *Propose a mechanism for the following transformation: (8) OH
Predict whether the following carbocations will rearrange. For those that do show the mechanism of the rearrangement and the structure of the rearranged carbocation. Note that if a 'hydride transfer occurs, the hydrogens are not shown. For TWO of them, a rearrangement will occur that results in a more stable carbocation due to resonance. Show the two resonance forms that result YES NO YES NO YES NO YES NO YES NO YES NO YES NO
TU PUI O Cour For each of the following carbocations, predict whether the care carbocations, predict whether the carbocation will undergo a Tearrangement (1,2-shift) or change location. If you believe it does, draw the new Laivocalion. If you predict that the carbocation will not undergo a rearrangement of change location, please explain why in a single, succinct sentence. +
1. Rank the following carbocations in order from most stable (1) to least stable (4). o ó no 8 2. Consider the following carbocation. Would this carbocation undergo a rearrangement? If so, show the mechanism (curved arrows) for the rearrangement (including the rearranged cation that is the product of your curved arrows) and explain why it happens. If not, explain why it would not rearrange.
VIII. (9 pts.) Each of the following carbocations will rearrange to form a different carbocation. Draw the correct structure of each of the rearranged carbocations in the spaces provided and show how each rearranged cation will form using arrow formalism correctly. Feel free to add necessary detail to the each starting structure as need be. A. CHșCH,CH B. CH, C. (CH3)2CCHCH2CH3
5. Which of the five carbocations shown below is the most stable (will not rearrange) and which one(s) will undergo carbocation rearrangement? Indicate the correct structures of the products of each of the carbocation rearrangements. To practice for the exam: Where applicable, use the curved arrow(s) to clearly draw the mechanism of the carbocation rearrangement. CD A. carbocation C is most stable and will not rearrange, and the products of rearrangements are go on Jor a from A from B...
5. Which of the five carbocations shown below is the most stable (will not rearrange) and which one(s) will undergo carbocation rearrangement? Indicate the correct structures of the products of each of the carbocation rearrangements. To practice for the exam: Where applicable, use the curved arrow(s) to clearly draw the mechanism of the carbocation rearrangement. å se do ško dos A. carbocation C is most stable and will not rearrange, and the products of rearrangements are from A from B...
6. Which of the four carbocations shown is the most stable (will not rearrange) and which one(s) will undergo carbocation rearrangement(s)? Indicate the correct structures of the products of the carbocation rearrangements. To practice for the exam: use resonance structures to explain why you selected specific a carbocation as the most stable. Where applicable, use the curved arrow(s) to clearly draw the mechanism of the carbocation rearrangement. HO HO A. carbocation B is most stable and will not rearrange, and...