16. Grignard reagents are prepared by reacting A. an alkyl halide with magnesium

Question

16. Grignard reagents are prepared by reacting A. an alkyl halide with magnesium in ether or THF solvent. B. an alkyl halide with cuprous iodide in ether solvent. C. an alkyl halide with lithium metal in ether solvent. D. an alkyllithium with cuprous iodide in ether solvent 17. Which of the following methods is the bes t for carrying out the transformation shown? A. (1) Mg, ether: (2) Cul; (3) CH3CH2Br C. (I) Cul, ether; (2) Li, pentane; (3) CH3CH2Br B. (1) Li, pentane: (2) Cul: (3) CH3CH2Br D. (1) Mg, ether: (2) CH3CH2Br: (3) Cul 18. What functional group(s) is (are) present in the following compound? B. ketone & alkyne D. ester & alkyne ketone & alkene aldehyde & alkene Which is the best method to accomplish the transformation show 0 B. I. O3; 2.ZnH' D. KMnO4, OH OsO4; 2. NaHSO3, H20

Explanation / Answer

16. Grignard reagents are prepared by reacting alkyl halide with Mg in ether or THF as solvent. (Option A)

17. Option A is correct

18. This compound has aldehyde and alkene groups (Option c)

19.Option B

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