underwent this sulfonylation smoothly at room temperature under metal-free and chemical-oxidant-free conditions to afford indolyl arylsulfones in good to high yields. This reaction was found to tolerate a variety of functional groups, including halides and cyclopropyl, ether, ester, and aldehyde groups. It was applied to the synthesis of biologically active 5-HT6 modulators.
Convenient KI-catalyzed regioselective synthesis of 2-sulfonylindoles using water as solvent
作者:Hongjie Li、Xiaolong Wang、Jie Yan
DOI:10.1039/c7nj00474e
日期:——
A convenient procedure is developed for the preparation of 2-sulfonylindoles fromindoles and sodium sulfinates catalyzed by KI in water. This environmentally benign 2-sulfonylation of indoles proceeds efficiently under mild conditions, affording the products with high regioselectivity and in moderate to good yields.
A facile and general method for regioselective C2 sulfonylation reaction of indoles mediated by iodine is described. The 2-sulfonylated products were obtained up to 96% yield under mild reaction conditions (room temperature, 2 h).
Multifunctionalization of Indoles: Synthesis of 3‐Iodo‐2‐sulfonyl Indoles
作者:Hyowon Park、Junryeol Bae、Soobin Son、Hye‐Young Jang
DOI:10.1002/bkcs.11882
日期:2019.11
of indoles by using thiosulfonates, trimethyl sulfoxonium iodide (Me3SOI), and H2O2 was studied. The reaction of thiosulfonates with Me3SOI and H2O2 produced sulfonyl radicals and an iodination reagent, both of which were incorporated in indoles to form 3‐iodo‐2‐sulfonylindolesunder carefully controlled conditions. The related reaction mechanism and the substrate scope of 3‐iodo‐2‐sulfonyl indoles
研究了使用硫代磺酸盐,三甲基碘化碘甲烷(Me 3 SOI)和H 2 O 2对吲哚进行选择性多官能化的方法。硫代磺酸盐与Me 3 SOI和H 2 O 2的反应产生了磺酰基和碘化试剂,二者均在严格控制的条件下掺入吲哚中以形成3-碘-2-磺酰基吲哚。介绍了相关的反应机理和3-碘-2-磺酰基吲哚的底物范围。
Atroposelective Synthesis of C−N Vinylindole Atropisomers by Palladium‐Catalyzed Asymmetric Hydroarylation of 1‐Alkynylindoles
作者:Li‐Wen Zhan、Chuan‐Jun Lu、Jia Feng、Ren‐Rong Liu
DOI:10.1002/anie.202312930
日期:2023.11.6
The enantioselective hydroarylation of 1-alkynylindoles with organoborons for the synthesis of chiral C−N atropisomers is presented. A wide variety of vinylindole atropisomers were synthesized in excellent regioselectivity, stereoselectivity (Z-selectivity), and enantioselectivity under mild reaction conditions.