Also known as chloromethylbenzene or α-chlorotoluene, this is a colorless liquid with a pungent odor that is obtained by passing chlorine gas through toluene under light irradiation, replacing one hydrogen atom in the methyl group -CH3 of toluene ( C6H5CH3 ) with a chlorine atom. Depending on the reaction conditions, further chlorination can produce dichloromethylbenzene (benzal chloride) C6H5CHCl2 and trichloromethylbenzene C6H5CCl3 . The chlorine atom of benzyl chloride can be easily substituted with various functional groups, so it is used as a benzylating agent to introduce the benzyl group C6H5CH2- into many organic compounds, and as an intermediate for triphenylmethane dyes. It is hydrolyzed to produce benzyl alcohol. It must be handled with care as it is irritating to the skin, eyes, and mucous membranes. [Rikuhei Tani [References] | | | | | | | [Supplementary information] |Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
クロロメチルノベンゼン、α(アルファ)-クロロトルエンともいう。光を照射しながらトルエン中に塩素ガスを流し、トルエンC6H5CH3のメチル基-CH3の水素原子1個を塩素原子と置換することにより得られる、刺激臭のある無色液体。 反応条件によりさらに塩素化が進行すると、ジクロロメチルノベンゼン(塩化ベンザル)C6H5CHCl2、トリクロロメチルノベンゼンC6H5CCl3が生成する。塩化ベンジルの塩素原子は種々の官能基で置換されやすいので、多くの有機化合物にベンジル基C6H5CH2-を導入するベンジル化剤、またトリフェニルメタン系染料中間体として用いられる。加水分解するとベンジルアルコールをつくる。皮膚、目、粘膜を刺激するので取扱いに注意する必要がある。 [谷利陸平] [参照項目] | | | | | | | [補完資料] |出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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