PART A- Choose the Best Answer. (10 x 4 40 Points) 6) The acid catalysed alcohol
ID: 883046 • Letter: P
Question
PART A- Choose the Best Answer. (10 x 4 40 Points) 6) The acid catalysed alcoholysis of esters is called reaction 1) A secondary alcohol reacts with pyridinium chlorochromate (pcc) to yield A) The Wittig B) Fischer esterification C) Iodoform D) Saponification E) Ketalization A) an ester B) a ketone C) an aldehyde D) carboxylic acid E) none of these 2) Treatment of acetic acid with 2 equivalents Phenyl lithium results in formation of 7)is a conversion of ester to carboxylate salt in basic conditions A) Acetal D) dianion B) Enol C) tertiary alkoxide E) Phenyl acetate A) The Wittig B) Fischer esterification C) Iodoform D) Saponification E) Ketalization 3) Which of the following is the strongest acid? 8) Which of the following carbonyl compounds is the LEAST reactive? D) CH(CI)2CO2H E) C(CI)3CO2H A) Ester B) Anhydride C) Acid chloride D) Carboxylic Acid E) Amide 9)___converts CH3COCl to CH3CHO A) H2/Ni B) Borane -BH3 D) NaH 4) The methyl ester of a carboxylic acid can be synthesized directly using A) SOC12 B) CH3 Mg Br C) CH2N2 D) C2H;OH, H E) CH3NH2 D)LiAlH[OC (CH3)3l3 E LiAlH4 5) attacks Ethyl Bromide in the acid- 10) Which of the following ketones will give a catalyzed -alkylation of a Acetone ? positive iodoform test? B) An Enol A) An Enolate C) Carbocation D) Alkoxide E) Ylide A) 4-heptanone B) 2-hexanone C) 3-hexanone D) cyclohexanone E) 2-methyl-3-pentanoneExplanation / Answer
1) B)ketone
2) D) dianion
3)E
4)C diazomethane
5)B
6)hydrolysis
7)D
8)E
9)D
10)B
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