1559r.eh17_304-32211/3/0510:48Page311 EQA Solutions to Problems311 CHQ OCHs Only acid catalyzes acetal formation HC、CH (d) 00 CH2-CHCH-CH2CH: N(CH2CH3)2 (e)cHcH,s、 CH,CH2S 32.(a)In acid: OH OH CH3OH-HC-C-H In base 0- OH HC- .HC-C-H 0 H.C H:C (b)In acid 0:H HCH.CH.CH,CH:OH H个CH.CH.CH.CHOH及J一。 In base --(b) Only acid catalyzes acetal formation. (c) (d) (e) (f) 32. (a) In acid: In base: (b) In acid: In base: H CH2CH2CH2CH2O O C H O HO H O O H O H

C CH2CH2CH2CH2OH CH H 2CH2CH2CH2OH O H C H H
O HO H O HO H3C O C H CH3OH O O H3C C H H3C CH3O O OH H3C C H H3C H3C O H
C H H3C
O OH H3C C H H3C H O OH H3C C H H3C CH3OH O H
C H N(CH2CH3)2 CH3CH2S CH3CH2S CH3 H3C CHCH2CH2CH3 O O CH2 CH3 NNHSO2 CH3 CH3 CH3O OCH3 Solutions to Problems • 311 1559T_ch17_304-322 11/3/05 10:48 Page 311