Consider the following multistep synthesis. KO Bu Br What is the identity of 3? O CH3OH 1 CH3CH₂OH HBr ROOR 2 3 O NaOCH 3 O More than one of these can accomplish this transformation. None of these can accomplish this transformation. Br₂ 4
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- The reaction of methylpropene with HBr in ether gives one of the two products below as the major product. Br HBr Br ether Product A Product B Product would have a higher energy transition state for the formation of the intermediate leading to it. O A O B O Both products would have the same transition state.Consider the following multistep synthesis. KOtBu Br What is the identity of 1? CH3OH CH3CH₂OH 1 NaOCH 3 HBr ROOR 2 3 More than one of these can accomplish this transformation. None of these can accomplish this transformation. Br₂ 4Which of these is the best set of reagents to carry out this transformation? H₂C- NaCN, H+ H2NOH ONH2NH2 HNO3 H₂C OH H
- What reagent is needed to carry out the following transformation? HO COOH 4 HO CN ? 2. H3O* 1. LAH OH3O+ Oa) 03, b)DMS OSO4, NMOIdentify the starting material necessary to carry out the following transformation. 1. NaOH, Br2 2. H3O* OH H OH17. Which reagent(s) complete this transformation? * OH О 1) NaBH4, 2) НЗО+ O 1) 03, 2) H2O2, NaOH mCPBA О РСС
- O O O Which reaction sequence would accomplish this transformation? LIAIH DIBAL-H ΕΙΟ CH₂OH, H3O LIAIH LIAIH CH₂OH, H₂O* H₂O* PCC 4 H₂O*° H₂O* OEIWhat is most likely the first step of this reaction's mechanism? CH3 CH;CH,OH Br Br CH3CH2O -H- CH3 Br CH3CH2OHConsider the following multistep synthesis. What is the identity of 3? O KO'Bu O CH₂OH O CH₂CH₂OH O NaOCH₂ HB ROOR 2 More than one of these can accomplish this transformation. None of these can accomplish this transformation. Br₂ 4
- Pick out the process which does not involve carbocation formation: O O ОН OH Br₂ CC14 HBr ether H₂SO H₂O HCI ether Br CI Br None of these involve a carbocation9. Mechanism: Propose a mechanism for the following transformation. Br Br H2OSelect the best reagent to accomplish this transformation: Br НО, O H20, SOCI2 H20, H2SO4 NaOH, H20 then H30* NaOMe, MeOН