all (E) CH,0-0)-CH TJ e reduction of cycloh one in isopro l alcohol in the prese

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(E) CH,0-0)-CH TJ e reduction of cycloh one in isopro l alcohol in the presence of umnum isopropoxide can be used to prepare cyclohexanol in a good yield only if which of the following conditions is fulfilled? (A) The reaction is carried out at 0 C. (B) The reaction is irradiated with sunlight. (C) The acetone formed in the reaction is distilled away as the reaction is (D) The cyclohexanol is distilled away from the reaction mixture as the (E) The reaction is catalyzed with mercuric chioride. taking place. reaction is taking place. 19) Which of the following molecules is chiral? A) 1,2-pentadiene B) 2,3-pentadiene o sothul-2 3-pentadien

Explanation / Answer

18. The reduction of cyclohexanone is carried out in presence of isopropanol and aluminium isopropoxide under heating condition.

Isopropanol is oxidised to acetone during yhe course of the reaction and acetone should be distilled off.

Answer is - option C

17. The dehydrohalogenation takes place via E1 mechanism that proceeds through stable carbocation. So, the compohnd which produces most stable carbocation will undergo dehydrohalogenation fast.

Answer is - option E

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