Photoredox-Mediated Remote C(sp<sup>3</sup>)–H Heteroarylation of <i>N</i>-Alkyl Sulfonamides
作者:Zhiqiang Deng、Guo-Xing Li、Gang He、Gong Chen
DOI:10.1021/acs.joc.9b02502
日期:2019.12.20
heteroarylation of sulfonyl-protected primary aliphaticamines with N-heteroarenes under photoredox-catalyzed conditions was developed. The reaction typically uses a slight excess of amine reactant. The use of benziodoxole acetate (BI-OAc) oxidant and hexafluoroisopropanol solvent is critical to achieve high yield. Besides methylene C-H bonds, heteroarylation reactions of δ methyl C-H bonds also worked under
Copper-Catalyzed, Interrupted Remote Fluoromethylthiolation of Unactivated C(sp3)-H Bonds
作者:Fan Yu、Wengui Wang、Shoufeng Wang
DOI:10.1021/acs.orglett.4c00336
日期:2024.3.15
An efficient copper-catalyzed selective fluoromethylthiolation of an inert δ-C(sp3)–H bond in sulfonamides was reported. In the presence of a copper catalyst and PhSO2SRf, the radical generated through 1,5-hydrogen atom transfer (HAT) was sufficiently trapped by PhSO2SRf, instead of copper, which was prevalent in metal-catalyzed radical-relay processes, incorporating a fluoromethylthio group into molecules
报道了磺酰胺中惰性 δ-C(sp 3 )-H 键的高效铜催化选择性氟甲基硫基化反应。在铜催化剂和PhSO 2 SR f的存在下,通过1,5-氢原子转移(HAT)产生的自由基被PhSO 2 SR f充分捕获,而不是金属催化自由基继电器中普遍存在的铜。过程,将氟甲硫基结合到分子中。通用的底物范围和温和的条件使该方法在医药和农用化学品中具有广泛的潜在应用。
Regioselective synthesis of isoquinolinonediones through remote unactivated C(sp3)–H bonds
作者:Lei Huang、Jun Sun、Boxuan Sun、Shengjie Song、Jianjun Li
DOI:10.1039/d4cc00916a
日期:——
general strategy for the remote-site-selective cascade addition/cyclization of unactivatedC(sp3)–H bonds in free alcohols and sulfonamides to build isoquinolinonedione skeletons is developed. The site selectivity occurs predominantly via a 1,5-hydrogen atom transfer (HAT) process, triggered by heteroatom-centred radicals generated directly under silver catalysis. A broad substrate scope and excellent
[EN] RNA METHYLTRANSFERASE INHIBITOR, SCREENING METHOD THEREFOR, ANTI-CANCER AGENT EFFICACY ASSESSMENT MARKER, AND KIT FOR EFFECTIVELY PREDICTING FTSJ1 INHIBITOR<br/>[FR] INHIBITEUR DE L'ARN MÉTHYLTRANSFÉRASE, PROCÉDÉ DE CRIBLAGE ASSOCIÉ, MARQUEUR D'ÉVALUATION DE L'EFFICACITÉ D'UN AGENT ANTICANCÉREUX ET KIT POUR PRÉDIRE EFFICACEMENT L'INHIBITEUR DE FTSJ1<br/>[JA] RNAメチルトランスフェラーゼ阻害剤、そのスクリーニング方法、抗がん剤有効性判定マーカー、及びFTSJ1阻害剤の有効性予測のためのキット