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What about (c)? Can you solve exactly problem (c)?
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- (b) State the reagents needed to convert benzoic acid into the following compounds. (i) C6H§COCI (ii) C,H$CH2OH (iii) C6H$CONHCH3Rank each set of compounds in order of increasing basicity.(a) NaOH, NH3, CH3NH2, Ph¬NH2 (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?
- 51. Which is NOT a valid resonance structure for the conjugate base of this molecule? (A) (C) OEt (C) :0: : OEt (+) HBr ROOR ü (B) OCH 3 (D) 52. What is the major product of this reaction sequence? o Mg ether (A) (B) :0: (D) H OEt OEt H OEt X CH31 LOH LOCH₁Which of the following reactions will not yield a carboxylic acid as a product? он (B) owool CrO3/H,0 (1) Oz/CH;Ch, -78°C (1) Mg, ether, A (A) Br (C) (2) H20 (2) CO2 (3) H* (dil /H¿O он H* /H2O A (D) Reaction D Reaction A Reaction C( -NH NH Identify the Bronsted base in the following reaction of I and II shown below. НО 11 CF₂ CF₁ A) compound I B) compound II
- Q6:- Rank the following substances in order of increasing acidity , Justify your choice. m-bromophenol, m-cresol m-nitrophenol , phenol51. Which is NOT a valid resonance structure for the conjugate base of this molecule? (A) (C) S (A) OEt O :O: : OEt HBr ROOR OCH 3 (B) 52. What is the major product of this reaction sequence? O PPh3 (D) 11 Mg ether (B) de OEt :0 aom Сосно LOCH 3 53. Which reagent is necessary for this transformation? (D) H OEt H OEt CH31 PPh3 ACS 56.In each of the following compounds, a particular atom is indicated with an ar- row. Determine whether this atom is nucleophilic, electrophilic, acidic. Some atoms may have none or more than one of these properties. (a) (b) O O (d) H3C H₂C CH3 CH3 + -OH₂ (e) (h) H3C H3C CH3 + OH₂ MgBr (c) (f) (i) H3C H3C O CH3 ÓH₂ O MgBr