Amino-oxetanes as amide isosteres by an alternative defluorosulfonylative coupling of sulfonyl fluorides
作者:Juan J. Rojas、Rosemary A. Croft、Alistair J. Sterling、Edward L. Briggs、Daniele Antermite、Daniel C. Schmitt、Luka Blagojevic、Peter Haycock、Andrew J. P. White、Fernanda Duarte、Chulho Choi、James J. Mousseau、James A. Bull
DOI:10.1038/s41557-021-00856-2
日期:2022.2
This disconnection, comparable to a typical amidation, will allow the application of vast existing amine libraries. The reaction is tolerant to a wide range of polar functionalities and is suitable for array formats. Ten oxetane analogues of bioactive benzamides and marketed drugs are prepared. Kinetic and computational studies support the formation of an oxetane carbocation as the rate-determining
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
Process for the Synthesis of Sulfones and Sulfonamides
申请人:Commissariat a l'Energie Atomique et aux Energies Alternatives
公开号:US20170166542A1
公开(公告)日:2017-06-15
A one pot single step process is described for the synthesis of a compound, including a labeled compound, containing a sulfonyl functional group comprising the step of mixing together a silane, an SO
2
source, an electrophilic compound, an activating compound and optionally a metal catalyst. A process for producing tracers from a labeled sulfonyl containing compound prepared by the described process is also included.