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- 5. How will you carry out the following transformations. OH 1. (COC)/DMF 3. Ph 'N' NaOAc OMe 1. POClą, DMF 4. 2. I2, aq. NH3 Ph 5. ZnBr2 OH + P(OEt)3 Ph 2.3. Predict the product for each of the following reactions and draw a stepwise mechanism to account for the transformation. Why are the outcomes different? 1. NaH 2. Br2 1. LDA 2. Br2Choose the best reagents to complete the reaction shown below. A B C E D HO о O= OH RCO₂H 1. OsO4 (catalytic) 2. NMO 1. KMnO4, OH- (warm) 2. H₂O* MCPBA 2. H3O+ 1. Hg(OAc)2, H2O E 2. NaBH4, NaOH Q Q
- Which of the following is/are not feasible for the following ether synthesis? A B D → to B and D A and C OH + CH3I A, C, and D Br + CH3OH + CH3OH + CH3OH All of these are feasible methods NaH THF NaH THF 1. Hg(OAc) 2 2. NaBH4 1. BH3: THF 2. NaOH, H₂O2What are the reagents used in each case below.Help In finding the major organic products for these reactions + NaOCH2CH3 1. add slowly 2. HCI b) 1. NaOCH, CH3OH 2. (CH3)2CHCH2CH₂Br 3. H3O+, heat
- 7. Propose a mechanism for the following Grignard reaction to show the structure of the product. 1. PhMgBr (excess) C17H2002 2. H3O*Select the appropriate reagent from the reagent bank to accomplish each step in the reactions below. Reaction 1: Reaction 2: Reaction 3: Reaction 4: G Reaction 1 НО. Reaction 2 lo Reaction 3 iOH OH Reaction 4 CN NH₂ ? ? . ? ? НО. loh OH lot NH₂ HO 1) BH3THF 2) H3O+ A HNEt₂ E 1) Et₂CuLi 2) H₂O I mCPBA M Reagent Bank ta NaH B HCI H₂O F HNEt₂ Trace H+ J SOCI₂ N CH3OH H* C 1) EtMgBr 2) H₂O G H₂C=PPh3 K H₂NEt Trace H* O 1) LIAIH4 2) H₂O D 38 НО. H* H -OH H* L DCC OH PIdentify the reagents that will form the product in the reaction below. a. HBr O b. 1. Disiamylborane, 2. H202, NaOH O c. Cl2, H20 O d. H20, H2SO4, H9SO4 Oe. 1. BH3•THF , 2. H2O2, NaOH е.
- Which of the following "mixed" reactions will NOT give you the product as shown? 1. LDA, THF 2. added slowly `H. 3. HCI 1. LDA, THF 2. O added slowly 3. HCI 1. CH3CH20 2. added slowly `H 3. HС `H 1. LDA, THF 2. O OH added slowly 3. HСIWhat reagents are necessary to carry out the following reaction? OCH3 1. Br2, FeBr3 , AICI3 1. CI 2. NaH 3. CH3I 4. NaBHa, CH3ОН 2. 1. CI 2. NaBH4, CH3ОН 3. NaH AICI3 4. CH31 II II 1. Br2, FeBr3 2. Mg(s) 3. H 4. NaH 5. CH3I 1. CI AICI3 2. CH3ОН, Н* IV VIdentify the best reagents to complete the following reaction. N 1 A B C D 1. CH3CH2MgBr 2. H3O+ 1. CH3MgBr 2. H3O+ 1. Na(CN)BH3, pH 4-5 2. H3O+ CH3NH2, NaOH E 1. CH3NH2, Na(CN)BH3, pH 4-5 2. Neutralizing work-up