AlBr<sub>3</sub>-Promoted stereoselective <i>anti-</i>hydroarylation of the acetylene bond in 3-arylpropynenitriles by electron-rich arenes: synthesis of 3,3-diarylpropenenitriles
作者:Yelizaveta Gorbunova、Dmitry S Ryabukhin、Aleksander V Vasilyev
DOI:10.3762/bjoc.17.180
日期:——
electron-rich arenes (Ar′H, benzene and its polymethylated derivatives) under the action of aluminum bromide (AlBr3, 6 equiv) at room temperature for 0.5–2 h result in the stereoselective formation of 3,3-diarylpropenenitriles (Ar(Ar′)C=CHCN) in yields of 20–64%, as products of mainly anti-hydroarylation of the acetylene bond. The obtained 3,3-diarylpropenenitriles in triflic acid CF3SO3H (TfOH) at room temperature
3-芳基丙炔腈(ArC≡CCN)与富电子芳烃(Ar'H、苯及其多甲基化衍生物)在溴化铝(AlBr 3,6当量)的作用下在室温下反应 0.5-2 小时,得到立体选择性形成 3,3-二芳基丙烯腈 (Ar(Ar')C=CHCN),产率为 20-64%,主要是乙炔键的反加氢芳基化产物。所得 3,3-二芳基丙烯腈在三氟甲磺酸 CF 3 SO 3 H (TfOH) 中在室温下 1 小时环化为 3-芳基茚酮,产率为 55-70%。