ベンズヒドロール

化学的特性off-white powder or White or colorless crystals. M.P. 69℃. B.p. 281℃. Practically insoluble in water, soluble in alcohol, miscible with oils. The crystals have a very faint musty-rosy odor, somewhat similar to that of Benzophenonc and Trichloromethyl phenyl carbinyl acetate.

解説ベンズヒドロール,結晶．融点68 ℃，沸点180 ℃(2.66 kPa)．エタノール，エーテル，クロロホルムなどに可溶，水に難溶．加熱するとジ(ベンズヒドリル)エーテルを生じ，還元するとジフェニルメタンとなる．有機合成原料に用いられる．森北出版「化学辞典（第2版）

用途ジフェニルメタノール(diphenylmethanol)は、香料や薬剤の製造に使われる。

用途有機合成原料。

使用Benzhydrols are industrially important compounds. On oxidation Benzhydrols yields Benzophenone, which are useful synthones for fullerenes, bioactive oxygen heterocycles, dyes and medicines. Various Cr (VI) and other oxidizing agents are used for oxidizing benzhydrol. Benzhydrol is widely used as intermediates in pharmaceuticals (including antihistamines), agrochemicals, perfumes and other organic compounds. It is used as a fixative in the perfume industry. It is involved in polymerization reaction as a terminating group. It is used as precursor to prepare modafinil, benztropine and diphehydramine. Intermediate in the preparation of Modafinil (M482500).

一般的な説明Pharmaceutical secondary standards for application in quality control provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards

純化方法Crystallise benzhydrol from hot H2O or pet ether (b 60-70o), pet ether containing a little *benzene, from CCl4, or EtOH (1mL/g). An additional purification step includes passage of a *benzene solution through an activated alumina column. It sublimes in a vacuum. Also recrystallise it three times from MeOH/H2O [Naguib J Am Chem Soc 108 128 1986]. [Beilstein 6 IV 4648.]