(b) Draw the product A that would be formed through the indicated sequence of steps from the given starting material. MeO (1) Br₂, hv (2) NaOEt, EtOH, A (3) BH3:THF (4) H₂O2, HO- B H₂C. CH₂ OH Edit
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- 10) What is the major product? (A) (C) OH (B) H₂SO4 (cat) H₂O (D) НО. ОН .Write the appropriate reagents, conditions and products for the following transformations, in a single step. OH II HNO, ? (1) H,SO,6). What is the major product of the following reactions? (A) -? coon 1). NaOH in ErOH, then H,O+ 2). 1 eqiv. NaOEt 3). 1 equiv. CH3Br 4). H₂O*, Heat COOB (Intramolecular Claison) COOE (B) CH₂ COOH (D) CH₂ (E) CH3 CH₂
- 1) Draw the complete electron-pushing arrow mechanism for the following reductions. Explain, using resonance contributors (structures), the regiochemistry that results in each case. OMe Na, MeOH ? NH3 CHO Na, MeOH ? NH312. Give the major organic product(s) of the following reactions or sequences of reactions. a) b) c) COOH CH3 + H3C- OH CH3 1. LIAIH4, ether 2. H3O+ H 1. NaBH4, ethanol 2. H3O+ + NaHAnalyze the reaction schemes below and state (with reasons) whether the reaction conditions supplied in each reaction scheme will result in the products shown as MAJOR PRODUCTS. If wrong products are shown, draw the correct products and provide mechanistic details (curly arrows) of how the right (major) products were formed.
- Select the appropriate conditions to produce the product shown in the following reaction. fogl BH, THF followed by H₂O₂, NaOH O, followed by H₂ Na, NH, H₂O, H₂SO4, HgSO4 Ha) Using your knowledge of organic reaction mechanisms, explain the formation of EACH product (A,B) in the following reaction. This will require you to write out MULTIPLE mechanisms (i.e. each product comes from a different reaction pathway). Hint: all reaction pathways start from the same intermediate: NaH is a strong base but cannot deprotonate an sp3 C-H bond! OH он 1) NaH (0.5 equiv) Br + 2) H20 A B b) Briefly explain why there is no epoxide (formed via an intramolecular substitution reaction) in the product mixture of the above reaction?5. Draw the starting materials, reagents, or major products for the following reactions. a) b) c) d) R. N-NEN Ро-сно Li AIH4; H₂O Δ Et₂O 2 equiv NaOH, H₂O, Br2 NaBH3CN CH3OH pH 4.5 NH₂ + N₂ + LOH + H₂O + 2 NaBr + 2 H2O + CO2