diastereoisomers, which can be enriched with the major diastereoisomer by simple recrystallization. The functional groups in the lateral chain can be easily modified allowing the synthesis of a variety of 3,3′-biquinazoline-4,4′-diones. The synthesis of symmetrically 2,2′ chirally disubstituted biquinazolinones via acylation/dehydration sequence of bisanthraniloyl hydrazine is also described.
一种通过手性缩合反应将手性中心并入其侧部附属物中的2-取代联
喹唑啉酮的简便方法 描述了具有3-
氨基-2 S-取代的
喹唑啉-4-酮的4 H -3,1-苯并恶嗪-4-酮。该方法简单明了,不需要在任何阶段进行色谱纯化。以非对映异构体的混合物形式获得高收率的产物,可以通过简单的重结晶使其富含主要的非对映异构体。可以容易地修饰侧链中的官能团,从而允许合成各种3,3'-联
喹唑啉-4,4'-二酮。对称的2,2'手性二取代联
喹唑啉酮的酰化/脱
水序列的合成。还描述了双
蒽基酰
肼。