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写出下列物质的化学结构式:儿茶素、鞣花单宁、左旋海松酸、没食子酸、α-蒎烯、β-蒎烯、葡萄糖、木糖、4-O-甲基-葡萄糖醛酸、纤维素、木酚素、松柏醛、紫丁香醛、肉桂醛。
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写出下列化合物的结构式:
(1)三氟乙醛
(2)4-异丙基苯甲醛
(3)乙基环己基酮
(4)5-己烯醛
(5)(Z)-5-苯基3-戊烯~2-酮
(6)4-氯-2,5-庚二酮
(7)三聚甲醛
(8)异丁醛缩二乙醇
(9)乙醛-2.4-二硝基苯腙
(10)环己酮肟
(11)甲醛缩氨脲
(12)异戊酸
(13)-氨基己酸
(14)N-甲基--戊内酰胺
(15)戊二酸单乙酯
(16)草酸
(17)水杨酸
(18)-己内酗
(19)3-苯基丙酸
(20)肉桂酸
(21)环己酮缩乙二醇
(22)双环[2.2.1]-5-庚烯-2-羧酸
(23)苯乙酸苯甲酯
写出具有下列分子式但仅有一个核磁共振信号的化合物结构式。
(1)C5H12
(2)C3H6
(3)C2H6O
(4)C3H4
(5)C2H4Br2
(6)C3H6
(7)C8H18
(8)C3H6Br2
写出下列化合物的结构式,并用中文命名。 (i)(S)-1-chloro-3-methylhexane (ii)(3R,5S)-3-bromo-5-methylheptane (iii)trans-1-chloro-4-chlommethylcyclohexane(iv)(2R,3S)-2-chloro-3-ethylhexane (v)ethyl-2-methylidene valerate (vi)acetonitrile (vii)N-methyl-N’-vinylbutanediamide (viii)propenenitrile (ix)heptanedioyl dichloride (x)glycol diacetate (xi)monoethyl oxalate (xii)3-benzoyloxypropionic acid (xiii)1-methoxy-4-(1-propenyl)bemene (xiv)1,2,3-triethoxypropane (xv)1-ethoxy-4-methoxybenzene (xvi)1-ethoxymethyl-4-methoxynaphthalene