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Problem 5. Indicate according to which mechanism each reaction proceeds. If there are stable intermediates, the...
5. Mechanism: (20 pts) Show the detailed reaction mechanism including all relevant arrows, intermediates, inorganic products, relevant resonance structures, and stereochemistry for the following reaction. heat OH H-Br step 1 step 2 step 3 step 4 Product(s) a. This is a S2/Sx1/E/E2/ reduction / oxidation mechanism. b. What is the product if the starting alcohol is reacted with PBrz? Product(s) with PBrz c. Reaction with PBr3 is a S2/S1/Ej / E2 / reduction / oxidation mechanism.
6. Determine the mechanism of nucleophilic substitution for each reaction and indicate the stereochemistry of the products. (in WORDS - DON'T DRAW DRAW PRODUCT BUT NOT Stereochemistry A. Br Brt + CN-acetons B. Br or n + CH₃OH Hochz - + OCHCH DME> c. 7. Label each stereogenic center as Rors A. a c. HO B ...oh OH NH 8. How is each compound related to the first compound D-erythrose (A+B) Oh. HK CH OH 04 I CH -04 D-erythrose...
3. Indicate the nucleophilic group and the electrophilic group in each of the following reactions, then draw curved arrows to show the electron flow: (a) H- N H -CH: (D) - (C) NH :CI: CI-APë: :CA: 1-ci: A-CI: 4. The following reaction has a small, positive AG and takes place slowly at room temperature: H3C-CI H-OH - H3C-OH - H-CI (a) The mechanism for the reaction is shown below. Which bond is being broken in the slowest step? Which bond...
Please show the full reaction mechanism from products 5
-> 6 -> 7. Only use the given reagents/reaction conditions
shown.
Scheme 1. Synthetic Route toward Compound1 Bno OM NHBz NHBz NH но. OH "Reagents and ditions: (a) NaH TBAL B Dr, dry THF, 78 °C to rt Sh 62%; (b) DAST, dry Pyri İne, dry C40,-20 ℃ to t 18 h, 56%, (c) 50% T FA HO re to rt 4 h, 100% (d) Ac O dry Py dine, 0...