I<sub>2</sub>/TBHP Mediated C–N and C–H Bond Cleavage of Tertiary Amines toward Selective Synthesis of Sulfonamides and β-Arylsulfonyl Enamines: The Solvent Effect on Reaction
作者:Junyi Lai、Liming Chang、Gaoqing Yuan
DOI:10.1021/acs.orglett.6b01412
日期:2016.7.1
A novel method toward synthesis of sulfonamides and β-arylsulfonyl enamines has been developed via I2/TBHP mediated C–N and C–H bond cleavage of tertiaryamines, which features highly selective formation of two different target products depending on the reaction solvent. The experimental results reveal that H2O as the solvent could effectively achieve the C–N bond cleavage to produce sulfonamides due
A mild, practical, and environmentally friendly route to vinyl sulfones and sulfonamides has been developed based on the reaction of aliphaticamines with arenesulfonyl chlorides in the presence of eosin Y as a photocatalyst under visible light. The method permits the selective formation of vinyl sulfones or sulfonamides, depending on the oxidation environment and solvent. A wide range of products
One-Pot Bimetallic Pd/Cu-Catalyzed Synthesis of Sulfonamides from Boronic Acids, DABSO and<i>O</i>-Benzoyl Hydroxylamines
作者:Haibo Zhu、Yajing Shen、Qinyue Deng、Changyu Huang、Tao Tu
DOI:10.1002/asia.201601732
日期:2017.3.16
A practical and straightforward bimetallic Pd/Cu catalytic system has been developed. This system affords various sulfonamides in onepotfrom easy‐to‐handle and readily available boronic acids, sulfur dioxide surrogate DABSO and O‐benzoyl hydroxylamines in high yields. Without additional ligands, the newly developed catalytic system revealed a broad substrate scope for both partners and tolerated