Question
Structure and synthesis of Alcohol.
What are the correct answers for numbers 3,4,11,12,13,14, 15?
3. Identify the tertiary alcohol among the following alcohola A. phenol B. benzyl alicohol C. hydroquinone D. cyclohexanol E. 2-methyl-2-propanol 4. What is the IUPAC name for CH,CH(OH)CH, COOH A. 1-carboxyl-2-propanol B. 2-hydroxybutane carboxylic acid D. 2-hydroxybutanoic acid 11. Which of the following reagents will not be efficient in converting propanol into the propoxide ion? A. Na B. KNH2 C. NaOH D. NaNH, E. K 12. Which statement best describes the polarity of the C-Li bond in an organolithium compound? A. The C-Li bond is highly polar and almost ionic, C positive, Li negative. B. The C-Li bond is highly polar and almost ionic, C negative, Li positive. C. The C-Li bond is highly covalent and not very polar. D. The C-Li bond is highly covalent and very polar, C negative, Li positive. E. The C-Li bond is highly covalent and very polar, C positive, Li negative. 13. What solvent is best used for the prepsration of butyllithium from 1-bromobutane and lithium metal? A. water B. dioxane C. THF D. hexane E. butane 14. The addition of a carbon nucleophile to a carbonyl compound leads to an alkoxide ion. Which statement about the alkoxide ion does not apply? A. The O-atom carries a negative charge. B. The O-atom has three lone pairs. C. The alkoxide can be protonated by dilute acid to the aloohol. D. The former carbonyl carbon has been rehybridized from sp2 to sp3 -E. The bond between the alkoxide and the metal cation is dominantly covalent. 15. Which Grignard reagent is best suited for the synthesis of 3-methyl-1-butanol, (CH),CHCH,CH,-OH, from either an aldehyde or a ketone? A. (CH),CH-MgBr B. (CH),CHCH,CH-MgBr C. (CH,),CHCH,CH,-MgF --D. (CH3) CHCH,-MgBr E. CH,CH,CH,-MgBr
Explanation / Answer
Ans 3 : E) 2-Methyl-2-propanol
A tertiary alcohol is the alcohol in which the hydroxy -OH group is bonded to a 3o carbon (the one that is bonded to three other carbon atoms ).
Here in this compound the OH group is bonded to the carbon atom that is bonded to the three different carbon atoms , hence the alcohol is tertiary.