作者:Olga V. Vinogradova、Irina A. Balova、Vladimir V. Popik
DOI:10.1021/jo201148h
日期:2011.8.19
efficient synthesis of cinnoline-fused cyclic enediyne is reported. Richter cyclization of o-(1,3-butadiynyl)phenyltriazene produced 3-alkynyl-4-bromocinnoline. The Sonogashira coupling of the latter with 5-hexyn-1-ol was employed for the introduction of a second acetylenic moiety. The crucial cyclization step was achieved under Nozaki–Hiyama–Kishi conditions. Cinnoline-fused 10-membered ring enediyne is
据报道,一种短而有效的合成肉桂酸稠合的环状二烯炔。邻-(1,3-丁二炔基)苯基三氮烯的更丰富的环化反应生成了3-炔基-4-溴辛啉。后者与5-己炔-1-醇的Sonogashira偶联被用于引入第二炔属部分。关键的环化步骤是在Nozaki–Hiyama–Kishi条件下完成的。辛诺林稠合的10元环烯二炔比相应的碳环类似物更具反应性,并且在温和加热下可产生良好的Bergman环化产物收率。该烯二炔在40°C孵育后诱导单链dDNA切割。