Question

Exam # 4 in Organic chemistry 252 Student's Name - Answer the following Questions 1. What is the correct name for the following compound? Y Y (CH.CHCH.COCH.CH a. 2-methyl-4-hexanone c. 2-methyl-3-hexanone b. 5-methyl-3-hexanone d. ethyl isopropyl ketonel. 2. Which of the following statements is incorrect regarding the compound propanal. a. The carbonyl carbon is sp hybridized b. In solution propanal is in equilibrium with 1-propen-1-ol c. The carbonyl carbon is susceptible to electrophilic attack d. The carbonyl oxygen is readily protonated by a Brusted acid e. The carbonyl carbon is susceptible to nucleophilic attack. 3. It is desired to effect a reduction of 5-phenyl-4-penten-2-one to 5-phenyl-4-penten-2-ol. Which of the following well known reducing agents (choices A through E) should be employed? CH a. hydrogen over a platinum catalyst b. zinc amalgam and HCI c. sodium borohydride d. ethylenedithiol/HCl, then hydrogen and Raney nickel e. lithium and ammonia Which is the correct name for ? a Propylone b-proponal c-propeneone d-2-oxoprpanone e-propanone 5-Which is the correct name for a-3-methylbutan-2-one c2-methylbutan-3-one CH3-C-CH-CHE b- 3-methylpropanone o CHз d-2-methylbutanone

Answer 1

5-methyl-3-hexanone 1. Option to is correct O prion 65 oth Carbonyl - o is electrophilic in nature. Hence cannot be attacked iby electrophilic attack, option ² is correct. 3) c) NaBlly only only Carbon not the me reduces carbonyl double correct option c is 4) I Propanone] 2 3 option & i coneet c=0 h Ketone Suffix-)- one

H3-C-CH-CH3 - 6 CH3 3- Methylbutan-2-one option él is correct.