0光不精与 Industrial Importance Acetone and methyl ethyl ketone are important solvents. Formaldehyde used in polymers like Bakelite®.胶木 Flavorings and additives like vanilla, cinnamon,artificial butter
Industrial Importance Acetone and methyl ethyl ketone are important solvents. Formaldehyde used in polymers like Bakelite . Flavorings and additives like vanilla, cinnamon, artificial butter. 胶木
TABLE 18-4 Ketones and Aldehydes Used in Household Products 0 CH,O CHO CHO CH,-CH,-CH,-C-H 一CH HO butyraldehyde 香兰素 vanillin acetopheno trans-cinnamaldehyde Odor: buttery vanilla pistachio 开心果 cinnamon Uses: margarine,foods foods,perfumes ice cream candy,foods,drugs 人造奶油 香芹 麝香酮 樟脑 camphor Pyrethrin除虫菊酯 carvone muscone Odor: “camphoraceous' floral 薄荷 (-)enantiomer:spearmint musky aroma 擦剂，吸剂 麝香香料 Uses: liniments,inhalants plant insecticide ))enantiom香并籽 candy,toothpaste,etc. perfumes
人造奶油 香兰素 开心果 肉桂 樟脑 除虫菊酯 香芹 麝香酮 擦剂,吸剂 香芹籽 薄荷 麝香香料
0 OH Tautomers R 互变异构体， Keto tautomer Enol tautomer 酸碱对烯醇式都 ⊕ 有促进作用 Step 1 Step 2 0 CH
互变异构体 ， 酸碱对烯醇式都 有促进作用 Tautomers O O O H O CH OO O H O O H O O O O H O CH OO O H O O H O
结构对烯醇型含量的影响 名称 化合物结构 烯醇型含量 0 丙酮 CH.CCH 2.4X104 环己酮 o 2.00X10-2 00 乙酰乙酸乙酯 CH马CCH2COC2H5 7.5 00 苯甲酰乙酸乙酯 CCHCOCH 21 00 乙酰丙酮 CH.CCHCCH 80 00 苯甲酰丙酮 CCHCCH 99
结构对烯醇型含量的影响 名称 化合物结构 烯醇型含量 丙酮 环己酮 乙酰乙酸乙酯 苯甲酰乙酸乙酯 乙酰丙酮 苯甲酰丙酮 CH3CCH3 O O CH3CCH2COC2H5 O O CCH2COC2H5 O O CH3CCH2CCH3 O O CCH2CCH3 O O 2.4X10-4 2.00X10-2 7.5 21 80 99
Keto Tautomer Enol Tautomer %Lnol Tautomer 00 pKa=9 pure liquid water solution hexane solution 2 CH3 76 20 92 2,4-pentanedione 0 0 pK=11 0 CHa 8 04 46 H2 ethyl acetoacetate 0 K,=13 0.1 0 1 diethymae