Palladium-Catalyzed Tandem Reaction of Alkyne-Based Aryl Iodides and Salicyl<i>N</i>-Tosylhydrazones to Construct the Spiro[benzofuran-3,2′-chromene] Skeleton
作者:Xue Song Shang、Nian Tai Li、Deng Yuan Li、Pei Nian Liu
DOI:10.1002/adsc.201501150
日期:2016.5.19
aryl iodides and salicyl N‐tosylhydrazones has been achieved to afford a series of compounds containing the novel spiro[benzofuran‐3,2′‐chromene] scaffold in moderate to good yields. This efficient catalytic reaction, which tolerates various functional groups, combines alkyne‐based 5‐exo‐dig cyclization, palladium(II) carbene migratory insertion and intramolecular cyclization, generating three new bonds
已经实现了方便的钯催化的芳基碘化物和水杨基N-甲苯磺酰基hydr的串联反应,以中等到良好的产率提供了一系列包含新型螺[苯并呋喃-3,2'-苯并二甲基]支架的化合物。这个有效的催化反应,其容忍各种官能团,联合收割机炔基-5-外-挖环合,钯(II)卡宾洄游插入和分子内环化,在一个反应中产生三个新键。