Catalyst-Free Phosphorylation of Acridine with Secondary Phosphine Chalcogenides: Nucleophilic Addition vs S<sub>N</sub><sup>H</sup>Ar Reaction
作者:Pavel A. Volkov、Kseniya O. Khrapova、Anton A. Telezhkin、Nina I. Ivanova、Alexander I. Albanov、Nina K. Gusarova、Boris A. Trofimov
DOI:10.1021/acs.orglett.8b03061
日期:2018.12.7
to give 9-chalcogenophosphoryl-9,10-dihydroacridines in 61–94% yields. This contrasts with pyridines, which under similar conditions undergo an SNHAr reaction, wherein electron-deficient acetylenes play the role of oxidants. For acridine, the SNHAr step has been accomplished by the oxidation of the intermediate 9-phosphoryl-9,10-dihydroacridines (X = O) with chloranil.
cr啶在无催化剂条件下于70–75°C(存在和不存在缺乏电子的乙炔)下添加仲膦硫属元素化物HP(X)R 2(X = O,S,Se; R = Ar,ArAlk) ),以61-94%的收率得到9-硫属磷酰基-9,10-二氢ac啶。这与吡啶相反,吡啶在类似条件下进行S N H Ar反应,其中缺电子的乙炔起氧化剂的作用。为吖啶,在S Ñ ħ氩步骤已经由中间体9 -磷酰基-9,10- dihydroacridines(X = O)与氯醌的氧化来实现的。