title: Visible-light photoredox synthesis of internal alkynes containing quaternary carbons.
abstract: A novel and efficient visible-light photoredox method for the synthesis of internal alkynes containing quaternary carbons has been developed via coupling reactions of N-phthalimidoyl oxalates of tert-alcohols with 1-(2-(arylsulfonyl)ethynyl)benzenes. The reactions proceeded well at room temperature with good functional group tolerability.
authors.affiliation: Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China. fuhua@mail.tsinghua.edu.cn and Key Laboratory of Chemical Biology (Guangdong Province), Graduate School of Shenzhen, Tsinghua University, Shenzhen 518057, P. R. China.
authors.forename: Chang
authors.initials: C
authors.lastname: Gao
authors.affiliation: Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China. fuhua@mail.tsinghua.edu.cn.
authors.forename: Jingjing
authors.initials: J
authors.lastname: Li
authors.affiliation: Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China. fuhua@mail.tsinghua.edu.cn.
authors.forename: Jipan
authors.initials: J
authors.lastname: Yu
authors.affiliation: Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China. fuhua@mail.tsinghua.edu.cn.
authors.forename: Haijun
authors.initials: H
authors.lastname: Yang
authors.affiliation: Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China. fuhua@mail.tsinghua.edu.cn and Key Laboratory of Chemical Biology (Guangdong Province), Graduate School of Shenzhen, Tsinghua University, Shenzhen 518057, P. R. China.
authors.forename: Hua
authors.initials: H
authors.lastname: Fu