Concept explainers
Interpretation: The most likely hydride shift that will occur for each of the below carbocations should be depicted with curved arrow and reason behind lowered potential energy for thus newly formed carbocation should be explained.
Concept introduction: Carbocation is a general term employed for a postively charged carbon irrespective of valency of carbon. In carbocation, carbon is bonded to 3 atoms or groups and has only sextet of electrons so it behaves as an electron-deficient species. It is
The order of relative stability of various possible carbocation species is as follows:
Whenever possibility to attain lower energy by rearrangement is there then hydride or alkyl shift may occur and results in more stable carbocation. This type of rearrangement is highly favorable in polar solvents.
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Organic Chemistry: A Guided Inquiry
- Draw both resonance structures of the most stable carbocation ntermediate in the reaction shown. +HBr • You do not have to consider stereochemistry. Do not include anionic counter-1ons, e.g., I, in your answer. Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. Separate resonance structures using the → symbol from the drop-down menu, P. opy aste C. 000▼[片 vate Windowsarrow_forwardNeed help solving this, please show your work with the answer!arrow_forwardPlease help me with the organic chemistry problem below: Consider the reaction below: (Check the attached image) (it is between Furan and maleic anhydride, a DIels-Alder reaction) a) Will this reaction for an endo product (with a melting point of 80-81 degrees) or the exo product (with a melitng point of 114 degrees)? b) Carefully explain why the product must have been formed the way it did (exo or endo). c) Provide a mechanism for this reaction.arrow_forward
- Could you put them each in order from "Most electrophilic to the Least electrophillic? Thanks!arrow_forward3. An alkene can be converted into an ether in the three mechanistic steps shown below. Complete this mechanism by: Draw curved arrows to indicate the flow of electrons for each step. Lone pairs are omitted for clarity but be sure to include lone pairs on atoms that are involved in bond formation/breaking. Draw the reaction intermediates in the appropriate boxes. Include all nonzero formal charges. Classify each step of the mechanism using the boxes below each arrow as one of the following: acid- base proton transfer (AB), nucleophilic attack (NA), elimination (E), or rearrangement (R). + H-OMe H-OO + MeOH + MeOH + H-OMe H-OO 48arrow_forward1. Add nonbonding electron pairs to each atom where it is implied by the line-angle drawings shown below. 2. Use the curved arrow formalism to generate four additional, valid resonance structures for each compound. 3. Rank your resonance structures in order of increasing contribution to the overall nature of the molecule.arrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning