Although alcohol V gives a single alkene W when treated with POCI, and pyridine, three isomeric alkenes (X-Z) are formed on dehydration with H,SO4. Draw a stepwise mechanism for each reaction and explain why the difference occurs. он do.do.de POCI, pyridine V w H2SO4
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- Draw the organic products formed when allylic alcohol A is treated with each reagent.a.H2 + Pd-C b.mCPBA c. PCC d.CrO3, H2SO4, H2O e.(CH3)3COOH, Ti[OCH(CH3)2]4, (+)-DET f. (CH3)3COOH, Ti[OCH(CH3)2]4, (−)-DET g. [1] PBr3; [2] LiAlH4; [3] H2O h.HCrO4−–Amberlyst A-26 resinDraw the products (including stereoisomers) formed when benzaldehyde (C6H5CHO) is treated with each Wittig reagent.Draw the products formed when phenol(C6H5OH) is treated with each reagent. Give an explanation. c. CH3CH2Cl, AlCl3 l. product in (c), then KMnO4
- As a rule, axial alcohols oxidize somewhat faster than equatorial alcohols. Which would you expect to oxidize faster, cis-4-tert-butylcyclo-hexanol or trans-4-tert-butylcyclohexanol? Draw the more stable chair conformation of each molecule.(a) What product(s) are formed when the E isomer of C6H5CH = CHC6H5 is treated with Br2, followed by one equivalent of KOH? Label the resulting alkene(s) as E or Z. (b) What product(s) are formed when the Z isomer of C6H5CH = CHC6H5 is subjected to the same reaction sequence? (c) How are the compounds in parts (a) and (b) related to each other?Draw the products formed when each compound is treated with HNO3 and H2SO4.State whether the reaction occurs faster or slower than a similar reaction with benzene.
- Draw the products formed when A or B is treated with each reagent. In some cases, no reaction occurs. [1] C6H5Li (excess); [2] H2OExplain why pentane-2,4-dione forms two different alkylation products (Aor B) when the number of equivalents of base is increased from one totwo.Draw the products formed when phenol(C6H5OH) is treated with each reagent. Give an explanation. a. HNO3, H2SO4 h. product in (a), then Sn, HCl
- conjugated ring with alcohol reacts with I2, NaHCO3 with CH2Cl2 and H2O. What will be the product?Draw the product formed when (CH3)2CHOH is treated with each reagent (d, e and f)Dehydration of 1,2,2-trimethylcyclohexanol with H2SO4 affords 1-tertbutylcyclopentene as a minor product. (a) Draw a stepwise mechanismthat shows how this alkene is formed. (b) Draw other alkenes formed inthis dehydration. At least one must contain a five-membered ring.