One-Step Synthesis of Sulfonamides from <i>N</i>-Tosylhydrazones
作者:Andy S. Tsai、John M. Curto、Benjamin N. Rocke、Anne-Marie R. Dechert-Schmitt、Gajendrasingh K. Ingle、Vincent Mascitti
DOI:10.1021/acs.orglett.5b03545
日期:2016.2.5
The first described reaction between N-tosylhydrazone and SO2 is reported to provide alkyl sulfonamides in the presence of various amines. In this procedurally simple method, hydrazones of both unsaturated aldehydes and ketones proceed in moderate to excellent yields. Primary and secondary aliphatic amines are accommodated in this reaction, which provides a novel route to sulfonamides.
Catalytic sp<sup>3</sup>-sp<sup>3</sup>Functionalisation of Sulfonamides: Late-Stage Modification of Drug-Like Molecules
作者:Othman Abdulla、Adam D. Clayton、Robert A. Faulkner、Duncan M. Gill、Craig R. Rice、Scarlett M. Walton、Joseph B. Sweeney
DOI:10.1002/chem.201605464
日期:2017.1.31
range of branched sp3‐functionalised sulfonamides, a compound class for which few reported methods exist. By reacting benzyl sulfonamides with allylic acetates in the presence of Pd0 catalysts and base at room temperature, direct allylation was efficiently performed, yielding products that are analogues of structural motifs seen in biologically active small molecules. The reaction was performed under
A Useful Pd-Catalyzed Negishi Coupling Approach to Benzylic Sulfonamide Derivatives
作者:Gang Zhou、Pauline Ting、Robert Aslanian、John J. Piwinski
DOI:10.1021/ol800785g
日期:2008.6.1
mild catalytic system to access diversely functionalized benzylic sulfonamides has been developed. Palladium-catalyzed alpha-arylation by Negishi cross-coupling of sulfonamide-stabilized anions and a wide range of aryl iodides, bromides, and triflates constitutes a practical strategy for the synthesis of various benzylic sulfonamides.
Palladium-Catalyzed α-Arylation of Methyl Sulfonamides with Aryl Chlorides
作者:Bing Zheng、Minyan Li、Gui Gao、Yuying He、Patrick J. Walsh
DOI:10.1002/adsc.201600090
日期:2016.6.30
A palladium‐catalyzedα‐arylation of sulfonamides with aryl chlorides is presented. A Buchwald‐type pre‐catalyst formed with Kwong’s indole‐based ligand enabled this transformation to be compatible with a large variety of methyl sulfonamides and aryl chlorides in good to excellent yields. Importantly, under the optimized reaction conditions, only mono‐arylated products were observed. This method has
Sulfur-Phenolate Exchange as a Mild, Fast, and High-Yielding Method toward the Synthesis of Sulfonamides
作者:Alyssa F. J. van den Boom、Han Zuilhof
DOI:10.1021/acs.orglett.2c04292
日期:2023.2.10
Sulfonamides have many important biological applications, yet their synthesis often involves long reaction times under dry and non-ambient conditions. Here we report the synthesis of a large range of sulfonamides at room temperature using 4-nitrophenyl benzylsulfonate as a starting material. Sulfonamides were prepared from a wide range of aliphatic, linear, and cyclic amines, anilines, and N-methylanilines