作者:Søren Ebdrup、Marianne Schou Jensen、Per Vedsø
DOI:10.1039/a704120i
日期:——
Under appropriate reaction conditions 10-ethylphenothiazine 1 undergoes lithiation at C-4 using an excess of sec-butyllithium–N,N,N′,N′-tetramethylethane-1,2-diamine in diethyl ether. Reaction of the lithiated intermediate with a variety of carbon, halogen, sulfur and silicon electrophiles affords several new 4-substituted 10-ethylphenothiazines 3a–i in good yields.
在适当的反应条件下,10-乙基吩噻嗪 1 在二乙醚中使用过量的仲丁基锂-N,N,N′,N′-四甲基乙烷-1,2-二胺在 C-4 发生石化作用。锂化的中间体与各种碳、卤素、硫和硅亲电体反应,可以得到几种新的 4-取代的 10-乙基吩噻嗪 3a-i,收率很高。