Palladium-Catalyzed Chemoselective Oxidative Addition of Allyloxy-Tethered Aryl Iodides: Synthesis of Medium-Sized Rings and Mechanistic Studies
作者:Ce Liu、Yuke Li、Wei-Yu Shi、Ya-Nan Ding、Nian Zheng、Hong-Chao Liu、Yong-Min Liang
DOI:10.1021/acs.orglett.1c01238
日期:2021.6.4
This Letter describes a Pd-catalyzed Tsuji–Trost-type/Heck reaction with allyloxy-tethered aryl iodides and aziridines. The strategy provides efficient access to benzannulated medium-sized rings via intermolecular cyclization. The substrate aryl iodide has two oxidative addition sites, that is, the aromatic C–I bond and the allyl–oxygen bond. The chemoselective oxidative addition of allyl–oxygen bonds
这封信描述了 Pd 催化的 Tsuji-Trost 型/Heck 反应与烯丙氧基连接的芳基碘化物和氮丙啶。该策略通过分子间环化提供了对苯并环化的中等大小环的有效访问。底物芳基碘有两个氧化加成位点,即芳族C-I键和烯丙基-氧键。烯丙基-氧键的化学选择性氧化加成是有利的,随后是芳族 C-I 键的活化。氮丙啶起着关键作用。机理研究阐明了反应途径。