Construction of Aromatic [5,5] Spiroketals via Hypoiodite-Catalyzed Etherification Combined in Relay Cascades
作者:Wei Wei、Yao Wang、Jianpeng Yin、Jijun Xue、Ying Li
DOI:10.1021/ol300107v
日期:2012.2.17
An approach is developed for the synthesis of bisbenzannelated spiro[5,5]ketals via a catalytic relay reaction cascade involving a new cycloetherification, which is prompted by fluoride and catalyzed by the hypoiodite species generated in situ from irradiative aerobic oxidation of an iodide ion formed in the former step of the reaction cascade.
New fluoride-promoted hypoiodite-catalytic oxidative cycloetherification to aromatic spiroketals
作者:Wei Wei、Liqi Li、Xiaohong Lin、Haifeng Li、Jijun Xue、Ying Li
DOI:10.1039/c2ob25085c
日期:——
A new catalytic application of hypoiodite reagents generated in situ from iodide ions is found, which succeeded in the synthesis of bisbenzannelated spiroketal cores for the first time. Fluoride was proven to be obligatory for this spiroketalization, which is the first fluoride-promoted oxidative cycloetherification to aromatic spiroketals.