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研究所、轉學考(插大)-有機化學
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110年 - 110 國立臺灣大學_碩士班招生考試_綠色永續材料與精密元件博士學位學程甲組:有機化學(B)#101179
> 申論題
(14) Please give the major product for each reaction listed below. (10%) (A)
(B)
相關申論題
(1) How many stereoisomers can be obtained by hydrogenation of both double bonds in the following compound? (5%)
#424229
(2) Which H in the following compound should exhibit the highest reactivity towards radical substitution? (5%)
#424230
(3) How many kinds of nonequivalent H's are there in (A) and (B)? (10%)
#424231
(4) Give the structure for a compound C2H2BrCl, that has two doublets, coupling constant = 16 Hz in 1H NMR spectroscopy. (5%)
#424232
(5) Treatment of A with aqueous acid gives a single compound, (B). B can be converted to an oxime. B can be oxidized to HOOC(CH2)4COOH. Give the structure of B. (5%)
#424233
(6) Determine the formal charges on O and B in H2O:BF3. (10%)
#424234
(7) Briefly state why cyclooctatetraene is nonaromatic. (5%)
#424235
(8) The E2 dehydrohalogenation of 2-chloro-2,3-dimethylbutane can lead to A and B. A does not show C=C vibrational absorption. B has a C=C absorption peak at. Give structures of A and B. (10%)
#424236
(9) Indicate which compound (H2S or H2Se) is more acidic. (5%)
#424237
(10) Indicate which compound is more basic. (5%)
#424238
(B)
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(B)