b. Provide mechanisms and/or products for the following transformations. Pd°Ln, Cul, PhBr 1. HBpin, THF ? ? EtzN, THF H 2. Pd°Ln, PhBr, KgPO4, H2O/THF
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- b. Provide mechanisms and/or products for the following transformations. Pd°Ln, Cul, PhBr 1. HBpin, THF ? EtzN, THF 2. Pd°Ln, PhBr, H. K3PO4, H2O/THFPlease pronde ne approprate reagents or product. 1.Os0y,TBHP, H20/THF -> 2. TSOH, acetone, PhH,neat 3. AICI3, CH3COCI, CH2C12 2) 1. B200B2,NBS, CC14> 2. Mg, THF;then Pa°Ln, PhBr 3. HNO3 , HzSo4 4. 2n, HCI me Br Me0 (3 meo MeN HN Meo me BrWhich of the following reaction sequences will produce the product below? HCI a) OMe CH;OH 1. H2CrO4 2. SÕCI, b) 1. PCC c) 2. SOCI2 OH 1. HСІ, Н2О 2. SOČI, (p NME2
- 1. Predict the major product of the following reactions (if applicable) and propose a mechanism for the reactions below. a. b. C. d. e. CI CI ZI O 1) IBUOK / IBUOH tBuOK/tBuOH NaN3 H₂O, cat. H₂SO4 Br2, CCI4 (Hint: has similar reactivity as ROH) Br OH (±)a. b. Propose a mechanism and final product for the following reactions. SiMe3 PhB(OH)2 cat. Pd(PPH3)4 Na₂CO3 S S Ph CO₂Et cat. Pd(OAc)2 K₂CO3, Bu4N+ I- C13H16SSi C15H14O2S2:31 PM Tue Apr 26 * e C 95%O b. Provide mechanisms and/or products for the following transformations. Pd°Ln, Cul, PHB. 1. HBpin, THF Et,N, THE H 2. Pd°Ln, PhBr, KgPO4, H2O/THF 3. The Mannich reaction can take many forms, including reactions where aromatic heterocycles are employed. Provide mechanisms for the reactions in the following sequence. Me Meo OMe MeN- MeN- H• -N MeN MECN. 100 °C NaH, THF; then 6M HCI Meo,C, Me -Me 4 6.
- Provide the mechanism and product(s) of the following reactions: O₂N. CI NaOH da /NH 1. KNH₂ 2. H₂O Br2, FeBr3 NaOMeb. Provide mechanisms and/or products for the following transformations. Pd°Ln, Cul, PhBr 1. HBpin, THF Et,N, THF 2. Pd°Ln, PhBr, K3PO4, H20/THF H.18 of 21 60. Select the compound that is not an intermediate in the following organic transformation. ОН НО НО НО ОН ОН ОН А 61. When treated with 0.01 M HCI, molecule _will be protonated to the greatest extent while molecule will be protonated to the least extent. NH2 II IV || O=N* а. 1, I b. III, I C. III, II d. III, IV 62. Identify the mechanistic step in a Claisen condensation with the largest equilibrium constant value. a. initial proton transfer by ethoxide to yield the enolate ion b. nucleophilic attack of the enolate ion on the ester electrophile c. reformation of the carbonyl to promote heterolysis of the alkoxide leaving group d. proton transfer of the alkoxide on the newly formed beta keto ester substrate
- Bu Br ML. से 1) 1.05 nBuLi 2) A) -78 30 min MeOH B-78 to RT for 1h; MeOH e Bu H what would be the mechanism/interaction between the n-Butyllithium and the starting material to get to the product? Please explain step by step.5. Draw the organic products formed in the following reactions. az vo 2169 snol mo 40-60 g a. b. N [1] LIAIH4 [2] H₂O odior hobnod noitibbs, ogrob [1] Mg Br [2] Å quore [3] H3O+ C. O OH Isprie [1] TBDMS-Cl, imidazole [2] CH3Li [3] H₂O [Indicate stereochemistry.] quong griynol is dit bruggmos lynddisa vesi tuontiv d. of enousNaBH42 OCH3 CH3OHWhich reaction is NOT appropriate for the synthesis of 2-pentanone? 1. ВНЗ/ТHF 2. H2O2/NAOH А. of 1. ether MgBr + `NME2 2. H+ В. 1. NaOEt/ETOH + Br 2. H+, Н20, Нeat С. Hg(OAc)2 H+, H2O D.