Question

13. What is the major organic product of the following reaction? ma POCI OH 16-POCIE CIZOPO 14. Which of the following statements about Grignard reagents (R-Mg-X) is true? (i) because of the highly polar nature of the Mg-X and Mg-C bonds in Grignard reagents, water and CH3OH are good solvents for Grignard reactions. (ii) reaction of a Grignard reagent with an aldehyde yields a secondary alcohol; (iii) Grignard reagents are strongly nucleophilic; (a) only () is true (d) only (i) and (iii) are true (6) only (1) and (ii) are true (e) only (ii) and (iii) are true (c) only (iii) is true 15. Which compound would provide the highest yield of 4-ethylhex-2-ene upon reaction with sodium t-butoxide (NaOtBu)? CH3 CH2CH3 (b) H Br HYCH.CH н (с) н CH2CH3 TH Br Y H2CH2CH3

Answer 1

18: TOH . gields A pock OH pyridine @ major product. 4. ii. Reaction of Grignald reagent with aldehyde Beendory alcohol, 1 B) Grignald reagents are strongly nucleophilic obtain is © only if iii are true. I Naotion Naotha NastBu ts bulky bare abstracts proton e option is @ from less hindered side.