11) Propose a plausible reaction mechanism for the following reaction HCL, H,O Heat 12) Using arr...
Map at assify these structures as hemiacetal, hemiketal, acetal, ketal, or other. Each structure needs to go int a box, and they will shrink to fit as needed when you put more than one in a box. Jasperse: Read the hint before you start, because I didn't emphasize the distinction between hemiacetals and hemiketals, or between acetals and ketals. Hemiacetal Hemiketal Acetal Ketal Other ОН OCH3 CH3COCH3 CH2CH3 O II CH3COCH3 OH CH3 | CH3CHOCHZ OCH3 CH3 H3COH H3C CH3...
Propose a mechanism for the following reaction: 11. Propose mechanisms for the following reactions. Draw all arrows, lone pairs, formal charges, counter ions, and label all reaction steps (e.g. proton transfer, loss of leaving group, etc.). A. (13 pts) CH:NH 2 N N - CH3 Cl
2) Propose a mechanism for the major product of the following reaction? CнЗ CH3 heat CH3 —С —снснз + нBr I H CHз Он CH CCHCH3 Br CH3 CH3 CHS Cus-C-GHCHS CHSC CHS C-CHCHS CH CHS
8. What is the major product of the following reaction? Cн, CH Cl (solvent) C сн, a сн, CH CH H OH H OH OH 9. What is the degree of unsaturation of C10H12N203? a 4 b.5 c. 6 d.7 10. Which of the following statement about using curved arrows in polar reaction mechanism is true? a. The nucleophile can be either negatively charged or positively charged. b. The electrophile must be neutral. c. Electrons move from a nucleophilic source...
4. [12 pts] Propose mechanisms for the formation of all 3 products shown in the reaction below: (draw curved arrows, intermediates, and resonance structures if necessary. NO NEED FOR TRANSITION STATES! CH CH CH CH Br Heat CH,CH,OH OCH.CH Mechanism.14 points) Mechanism 2 points) Mechanism.3 14 points) 5. [14 pts] Provide the major products of reacting the alkene shown in the middle of the scheme below with all the reagents independently. Draw the products' structures in the corresponding table below...
Challenge Problem 18.38 The following is an example of a reaction sequence developed by Derin C. D'Amico and Michael E. Jung (UCLA) that results in enantiospecific formation of two new chirality centers and a carbon-carbon bond. The sequence includes a Horner-Wadsworth-Emmons reaction, a Sharpless asymmetric epoxidation, and a novel rearrangement that ultimately leads to the product. Propose a mechanism for rearrangement of the epoxy alcohol under the conditions shown to form the aldol product. (Hint: The rearrangement can also be...