What sets of reagents will result in an efficient Williamson ether synthesis (SN2)? ii Br ONa Br ONa iv Br ONa Br ONa O A. iv O B. ii and iv O C.i and iv O D. All sets
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- A. B. C. D. E. Br Br H H OH Which of these synthetica- 3. b. N OCH3 C. N Show the for reasonable Curved mechanism the reaction and make sure lone pairs + Conc HBr HBr 40c CN BrWhich set of reagents is appropriate for the following transformation? istryteps Br Br a. Br2/AIB13 b. 1. Br2/AIB13; 2.NANO2/HCl; 3. Fe/HCl c. 1. HNO3/H2SO4; 2. Sn/HCl; 3. Br2; 4. HNO2; 5. H3PO2 d. 1. HNO3/H2S04;B 2. Sn/HCl; 3. Br2/FeBr3; 4. HNO2; 5. НЗРО2
- Identify compounds A-I in the following synthesis scheme. CUCN D conc HNO3 1. HCI, Fe NaNO2 A 2. NaOH В HCI Same as above Br2 Mg(s). F Et,0 1. D NaBH4 1. NaH >E FeBr3 G ELOH 2. H2О (еxcess), H,SO4 2. C6H5CH,Br2. Provide reagents/conditions to accomplish the following syntheses. More than one step is required in some cases. a. b. CN Br Br CH₂ Revised F FDraw the final major product(s) for each reaction in the designated box. Indicate stereochemistry Page 7 WInen applicable. Br TMSCI 1. Mg, Et20 Bu4N F НО EtzN 2. THE 3. HСI (aq) РСС 1. MeMgBr Jones reagent ОН CH2CI2 2. HCI (aq) XS HBr МСРВА NaSH (aq) CH2CI2
- Ovide curve arrow mechanism for the foliowieg resction and ioclude all major and minor products AICI, 2) Reaction round-up Br/AIBra H HNO3/H,SO4 OH 17? 2?? NH2 B.1. Draw the intermediates A-C for reactions a and b. Please show the appropriate stereochemistry where necessary. RO hv .. RQ CO₂Me MO,C. Anti-tumour agent Coriolin co₂Me barrelene5. Predict the major product for each of the following reactions. Include stereochemistry when appropriate. Draw the mechanism for each reaction. a. b. C. d. e. Br CI OH CI H₂O NH3 OTS NaCN MeCN KOPh acetone
- Match of the following reaction sequences to a product below. Answers may be repeated. NO2 a. b. O,N C. d. none of the other answers NO2 v Choose... H,NNH, HNO3 ? кон H2SO4 d AlCl3 .CI Choose... HNO3 H2SO4 ? AIC13 .CI Choose... HNO3 H2SO4 H2NNH, ? кон AIC13 .CI Choose... + H,NNH, H2SO4 HNO3 H201. Give the major product(s) of the following reactions as needed. Include any stereoisomers. NaOEt 1. Br NaOH Br 2. NaOtBu 3. A MEOH 4. Br 2. Which reaction will proceed faster A or B? H,S H2S "CI .... вIII. Draw the major products or required reagents for the following reaction sequences. Be certain to indicate stereochemistry where it is relevant. A. B. C. EtO. FO N Bz Ph CH3 OEt AICI3 NaOCH 3 CH₂OH, A 1) NaOEt 2) Br2, CH3COOH 1) NaBH4 2) H3O+ workup H3O+, A