N-Halo succinimide-promoted one-pot three-component electrophilic cyclization: Facile access to dihalogenated heterocycles under mild conditions
作者:Hai-Tao Zhu、Ting-Ting Luo、Shi-Hui Shi、Ni-Ni Zhou、Si-Si Ning、Chen Zhang、Yu-Gang Xiao、Ming-Jin Fan、De-Suo Yang
DOI:10.1016/j.tetlet.2017.09.053
日期:2017.10
An effective and concise electrophiliccyclization of 1,4-butynediols, 4-aminobut-2-yn-1-ols, pent-2-yne-1,5-diols, 2-propynolphenols and 2-propynolanilines with N-halo succinimides and trimethylsilyl halides opens a one-pot synthetic access to five- and six-membered dihalogenated heterocycles in moderate to good yields. The optimized cyclizationconditions are tolerated with many functional groups