Question 27 For the following compound: 20 OH Draw a mechanism for the tautomerization process under ACIDIC conditions: Mechanism A: OH O-H + O: Mechanism B: :O-H Mechanism C: ов :OH Mechanism D: A B C O D :OH H-OH₂ O-H H-O-H ин H.. H 08 HO-H OH O: OH + พ พ H.. :OH 1 H-O-H
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- The key step in a reported laboratory synthesis of sativene, a hydrocarbon isolated from the mold Helminthosporium sativum, involves the following base treatment of a keto tosylate. What kind of reaction is occurring? How would you complete the synthesis?Question 26 For the following compound: Но H Draw a mechanism for the tautomerization process under BASIC conditions: Mechanism A: H-O: H-OH₂ H-O: Mechanism B: H-O: Mechanism C: H-Ö H-O: -H Η Η Mechanism D: H-O: ABCD H-OⒸ H.. H OH HH 4Ⓡ H..HPropose a mechanism for the following reaction: OC u Fe. OC Fe Ph;P Ph;P
- Propse a mechanism for the following reaction:Rank the following compounds from MOST react Mucieophilic acyl substitution. Enter the number 1 in the and number 3 in the box under the least reactive compou om bajada! 517 om oonuod O ofque ex Explain why 1 is more reactive compared to 237. Draw the structure of diol A: Ph Ph PhMgBr (2 equiv) then aqueous workup major product A (include stereochemistry)
- The pKa of p-cyclopropylbenzoic acid is 4.45. Is cyclopropylbenzene likely to be more reactive or less reactive than benzene toward electrophilic bromination? Explain.The following molecule was formed by a Robinson annulation reaction. What reactants were used?Which g the foellowing Strategis ayld yıcld an est« ?. 9 Nuckophilic qcyl Substitutiun q an acid Chluride with an alcoho) b) Reactwn y a O Nucleophilic acyl substitu tion of an J All of the abuve Carbuxylıc aud and an alcohel with Catayhe Sulfuriè acıd anhydale. with methand) Which nitrogen atfom B the p strongest by se ( Cirak A, B, or c)? A
- Identify the suitable reagents for the given reaction and arrange them accordingly. 1 OH OEt 2 OEt OEt O 1) EtOH, H₂SO4; 2) EtOH, H₂SO4 O 1) EtONa followed by H₂O; 2) TsCl/py followed by EtONa O 1) EtONa followed by H₂O; 2) NaH followed by EtBr O 1) EtOH, H₂SO4; 2) NaH followed by EtBr O 1) EtOH, H₂SO4; 2) TsCy followed by EtONaThe products of acidic cleavage of Ethyl isopropyl ether by Hl are: O Al Isopropyl iodide and Ethanol Bi lsapropanol and lodoethane CHisopropane and Ethane DI Mixture of both A and Bно CH3CO₂Et LDA, -78 °C NaOEt EtOH in addition to the mechanism predict which product is favored