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- Isoleucine, another of the twenty amino acids found in proteins, is metabolized by a pathway that includes the following step. Propose a mechanism.R R 200 R H H [1] Nu: [2] H₂O R 'R' st ↓ X H₂SO4 CH3CH2OH NaNH, NaNH, (2 equiv.) NaNH, (2 equiw 1. NaCN 2. H₂Owrite the magor produob formed by the to llow ung veaction, Assume that mo1l of You have enough of each reagont/ Reactant to drive bhe veactrion to Completion. protic wek up alowe as neee ssang As sume bhert thore 's Dibal- CH30H, H
- 4. Draw structures for products of the following reactions. PaCl, (Bu water tBu PdCI, methanol OH CHCI, NaOH, water Me,N LDA, THE, 0°C BulI (2 moles) Bri THF, -78°C Buli THE, °C Br Pd(OAch THE, 0C MeO5. Complete the following synthesis of the natural product mycophenolic acid. TMSCI OAC pyridine A OAC OH D TosCl pyridine HO. OTMS OTMS OMe Bno heat OH 1. Mg 2. Cô, 3. H,O .COOH Brz FeBra ÓTMS OBn OTMS Meo OBn Мео Na, NH, OH OH H (2 steps) 1. SOCI, G 2. heat HOOC OTMS Meo MeoWhich of the following can hydrolyse in water at room temperature? CH3COCH3 CH3CI CH;ČNH, IL || CH3ČOČCH, I II III IV Select one: a. I,II b. I, II c. II, II d II IV
- Which substrate in the following reaction will form only the product shown OH L BHy-THF 2. H;O, NaOH Oa. Ob. Od.write the magor produob formed by the fo llow ung reaction, Assume that you have enough of each reagont/ Reactant to drive the veectrion bo Completiion. Assume bhet there i's protic wek up aloe as nece ssary 1. NaBHey OH 2.4tDtermine the Products from the rxn Me. LDA A CH;I B + Lil -70 °C The Products A and B are Ме Me CH3 A= B= А. Me Me Me A= B= В. OCH3 Me. Me. A= B= С. Me Me. Me A= B= D.
- What is the major organic product of the following reaction sequence? (CH₂) 3 COOH 1) SOCI₂ AICI 3 CA) 00 CD) (B) O OTO Ott CI (F) > ? o a CoottIs the reagent for all elimination reactions conc. H2SO4? or just the reactions ones with OH?What type(s) of catalysis is/are present in the enzymatic reaction below? SCOA H-His CH SCOA Asp CH COASH CH: CO HO-C-COO" HO-C-COO H-CH, acetyl-CeA SCOA CH, CH; CH COO COO COO oxaloacetate an intermediate citrate Select one or more: a. general acid b. general base C. metal ion d. specific base e. nucleophilic f. specific acid