Fluoride salts-alcohols-alumina as reagents for nucleophilic substitution of chlorine atoms for alkoxy groups in 2,3-dichlorosubstituted juglones, naphthazarines, and quinizarines
作者:Victor Ph. Anufriev、Vyacheslav L. Novikov
DOI:10.1016/0040-4039(95)00295-n
日期:1995.4
Direct displacement of chlorine atoms by alkoxy groups in 2,3-dichlorosubstituted juglones (5-hydroxy-1,4-naphthoquinones), naphthazarines (5,8-dihydroxy-1,4-naphthoquinones), and quinizarines (1,4-dihydroxy-9,10-anthraquinones) is generally ineffective, however high yields are obtained when methanol or cellosolves activated by fluoride anion are used as nucleophiles and the reaction goes in the presence
2,3-二氯取代的聚对二甲苯(5-羟基-1,4-萘醌),萘萘烷(5,8-二羟基-1,4-萘醌)和喹唑啉(1,4-二羟基)中的烷氧基直接取代氯原子(-9,10-蒽醌)通常无效,但是当将甲醇或由氟阴离子活化的溶纤剂用作亲核试剂并且反应在氧化铝的存在下进行时,可获得高产率。