A copper(II) perchlorate-promoted tandem reaction of internal alkynol and salicyl N-tosylhydrazone: direct access to isochromeno[3,4-b]chromene.
A copper(II) perchlorate-promoted tandem reaction of internal alkynol and salicyl N-tosylhydrazone: direct access to isochromeno[3,4-b]chromene.
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DOI：
10.1039/c4cc02862g
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发表时间：
2014-07
影响因子：
4.9
通讯作者：
Siyang Xiao Hai;Xufeng Wu;Xiaochen Ji;Xinyu Wu;P. Liu
中科院分区：
文献类型：
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作者：
Siyang Xiao Hai;Xufeng Wu;Xiaochen Ji;Xinyu Wu;P. Liu
高氯酸铜（ii）促进了内炔醇和水杨基n -甲苯腙的串联反应，为合成等色[3,4-b]铬提供了一种新颖、简洁的方法，收率为35-94%。串联反应包括环异构化、形式[4+2]环加成和消去过程。
A copper(ii) perchlorate-promoted tandem reaction of internal alkynol and salicyl N-tosylhydrazone provides a novel, concise method for constructing isochromeno[3,4-b]chromene in 35-94% yields. The tandem reaction involves cycloisomerization, formal [4+2] cycloaddition and an elimination process.