Combining Organometallic Reagents, the Sulfur Dioxide Surrogate DABSO, and Amines: A One-Pot Preparation of Sulfonamides, Amenable to Array Synthesis
作者:Alex S. Deeming、Claire J. Russell、Michael C. Willis
DOI:10.1002/anie.201409283
日期:2015.1.19
describe a method for the synthesis of sulfonamides through the combination of an organometallicreagent, a sulfurdioxide equivalent, and an aqueous solution of an amine under oxidative conditions (bleach). This simple reaction protocol avoids the need to employ sulfonyl chloride substrates, thus removing the limitation imposed by the commercial availability of these reagents. The resultant method allows
Effective Recognition of Different Types of Amino Groups: From Aminobenzenesulfonamides to Amino-(<i>N</i>-alkyl)benzenesulfonamides via Iridium-Catalyzed <i>N</i>-Alkylation with Alcohols
作者:Lei Lu、Juan Ma、Panpan Qu、Feng Li
DOI:10.1021/acs.orglett.5b00824
日期:2015.5.15
A simple, highly efficient, and general strategy for the direct synthesis of amino-(N-alkyl)benzenesulfonamides has been accomplished via direct N-alkylation of aminobenzenesulfonamides bearing both different types of amino groups with alcohols as alkylating agents. Notably, this research exhibited the potential for the recognition of different types of amino groups in the N-alkylation of complex molecules with alcohols, facilitating the progress of the transition-metal-catalyzed "hydrogen autotransfer (or hydrogen-borrowing) process.
Selective N-Alkylation of Aminobenzenesulfonamides with Alcohols for the Synthesis of Amino-(N-alkyl)benzenesulfonamides Catalyzed by a Metal–Ligand Bifunctional Ruthenium Catalyst
作者:Lu Shen、Xingliang Wu、Lili Shi、Xiangchao Xu、Jin Zhang、Feng Li