作者:Hanbiao Yang、Eric Sjogren
DOI:10.1016/j.tetlet.2010.04.111
日期:2010.7
The isoquinoline ring system is a reoccurring structural motif in alkaloids1 and pharmaceuticals.2 Consequently, the synthesis and functionalization of isoquinolines have attracted considerable attention from the synthetic community.3 We previously reported a facile synthesis of 1,3,4-trisubstituted isoquinolines from commercially available 1,3-dichloroisoquinoline 1 (Scheme 1).4 A key step in the
异喹啉环系统是生物碱1和药物中经常出现的结构基序。2因此,异喹啉的合成和功能化引起了合成界的极大关注。3我们先前曾报道过从市售的1,3-二氯异喹啉1(方案1)可轻松合成1,3,4-三取代异喹啉。4该过程中的关键步骤是在C4处直接锂化1。用各种亲电试剂捕获得到的锂物质2,以产生4-取代的1,3-二氯异喹啉3,通过在Pd催化下利用C1–Cl和C3–Cl键的不同反应性,进一步制备了1,3,4-三取代的异喹啉4。