in a much lower ratio [Reaction 2, 55:45 ratio]. What is the major product for reaction 1? OtBu= 0 H₂C CH₂ CH₂ H₂C CHI to HỔ OtBu Ll CH₂ OIBU Product 1 + H₂C CH₂ OtBu Product 2 Reaction 1 99.1
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- The product below can be prepared from cyclohexanone through the following reaction sequence? A) [1] (CH3CH2)2NH, mild acid; (2) CH3CH2CH2BR; (3] HCI, H20 B) [1] CH3CH2NH2, mild acid; [2] CH3CH2CH2Br; [3] HCI, H20 ) [1] CH3OH, H+; [2] CH3CH2CH2MgBr; [3] HCI, H20 D) [1] nBuLi; (2] CH3CH2CH2Br: (3] ETNH2, mild acid E) [1] nBuLi: (2] CH3CH2CH2Br; (3] Et2NH, mild acidPropose a pericyclic mechanism to account for the following transformation:The following equation shows the reaction of trans-2,3-diphenyloxirane with hydrogen chloride in benzene to form 2-chloro-1,2-diphenylethanol. (a) How many stereoisomers are possible for 2-chloro-1,2-diphenylethanol? (b) Given that opening of the epoxide ring in this reaction is stereoselective, predict which of the possible stereoisomers of 2-chloro-1,2-diphenylethanol is/are formed in the reaction.
- Acid-catalyzed hydrolysis of the following epoxide gives a trans diol. Of the two possible trans diols, only one is formed. How do you account for this stereoselectivity?Give strucutre of products formed including stereochemistry if appropriate. If more than one product is formed, indicated which is the major product or if formed in equal amounts. PhMgBr (2 equiv.) then H30* HO, он он РСС ноAddition of hydrochloride acid to 1-isopropenyl-1-methylcyclopentane generates 1-chloro-1,2,2 trimethylcyclohexane. Draw the complete mechanism, including intermediates, to illustrate electron flow in the reaction.
- What products would ypu obtain from reaction of 2,4-dimethyl-2-pentene with BH3, followed by H2O2, OH-? Show its complete reaction mechanism.Provide a mechanism with products for the reaction above. CH3 2Na/Liq.NH₂3. Propose a plausible mechanism for the following transformation: & Q & CF3 H₂N CN 'N CF HOH
- Draw the SNl or SN2 reaction with CN for the following molecules t butylchloride , n - butylbromide , 2 -bromobutane . Explain in which mechanism it will react and why ?A good Williamson synthesis of ethyl methyl ether would beCH3CH2¬O- Na+ + CH3I ¡ CH3CH2¬O¬CH3 + NaIsodium ethoxide methyl iodide ethyl methyl etherWhat is wrong with the following proposed synthesis of ethyl methyl ether? First, ethanolis treated with acid to protonate the hydroxy group (making it a good leaving group), andthen sodium methoxide is added to displace water.CH3CH2(incorrect synthesis of ethyl methyl ether)OH + H+ CH3CH2 OH2+CH3CH2 O CH3The two pentene isomers react with mCPBA, followed by an aqueous workup with NaOH/H2Ó. Draw the key reaction intermediates and the product(s); use arrow pushing to explain the stereochemical outcomes of the reactions Intermediate Final Products MCPBA CO2OH mCPBA NaOH/H2O CI Intermediate Final Products MCPBA NaOH/H2O 6.