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- 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. Br25. 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.Please help me to select the correct reagents for the following 3 steps.
- What are the reagents used in each case below.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, H₂O2Help 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 PWhich 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. HСI
- 4. Devise concise syntheses for the following transformations. Clearly show the reagent and product for each step. The first three syntheses can be accomplished in two steps whereas the last synthesis requires three steps. a. Br b. HO OH HCH3 H H3C C. d. HIdentify 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.What 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 V