E1 - One

Japanese: E1 - いーいち
E1 - One

…Both reactions are classified into unimolecular reactions, in which the reaction rate depends only on the concentration of the substrate, and bimolecular reactions, in which the reaction rate depends on the concentrations of both the substrate and the reagent. Nucleophilic substitution is classified as S N 1 and S N 2, and nucleophilic elimination is classified as E1 and E2. On the other hand, the carbon of the carbonyl group C=O of aldehydes and ketones is more susceptible to nucleophilic attack than alkyl halides. …

*Some of the terminology that mentions "E1" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…どちらの反応も,反応速度が基質の濃度だけによって決まる一分子反応と,基質と試薬双方の濃度によって決まる二分子反応がある。求核置換ではSN1,SN2,求核脱離ではE1,E2とそれぞれ区別する。一方,アルデヒドやケトンのカルボニル基C=Oの炭素は,ハロゲン化アルキル以上に求核攻撃を受けやすい。…

※「E1」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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