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exam II page 3 - 11 Hydrotysis under basic conditions of...

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Unformatted text preview: 11. Hydrotysis under basic conditions of the ester shown below labeled with ‘30 will yield: Tia? C—OCH; a \DHJ 1 o o a) ll - 13 ” - 13 c——o + HOCH3 bl 0—0 + HOCH3 130 0 6) ch—o' + HOCH3 “1 L|__0. + HOCHa 0H 6) cl:—~o' 13(‘JCH3 12. Why are two equivalents of amine required for the preparation of an amide from an acid halide? 3) Acid halides are generally so unreactive that two equivalents of nucleophile are required. b) Use of two equivalents of amine shifts the equilibrium in the direction of products. 0) One equivalent removes an 0. hydrogen, and the other adds to the carbonyl. d) One equivalent adds to the carbonyt. and the other neutralizes the HX produced. e) None of the above. 13. Lactams are: a) cyclic acids b) cyclic esters c) cyclic amines d) cyclic anhydrides e) cyclic amides 14. Which of the following statements about organometallic reagents is false? a) Alkyllithium reagents (RLi) add to the carbonyl group of aldehydes and ketones. b) Grignard reagents add to the carbonyl group of aldehydes and ketones. c) Alkyllithium and Grignard reagents do not react with esters. d) Grignard reagents are prepared in ether or tetrahydrofuran {'l'HF)._ e) Grignard reagents are decomposed by water and atcohol. ...
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