optimized reaction conditions are well suited to the task of N-vinylation of sulfoximine with trans-2-phenylvinylboronic acid. N-Arylation of sulfoximines with different arylboronic acids, including sterically hindered boronic acids, is achieved using copper(I) iodide and 4-DMAP at room temperature. Moreover, N-arylation of biologically relevant l-methionine sulfoximine is demonstrated for the first time
Copper-catalyzed denitrogenative N-arylation of sulfoximines and sulfonamides with arylhydrazines
作者:Wanrong Dong、Chaoyang Liu、Xinchi Ma、Yingjun Zhang、Zhihong Peng、Dexun Xie、Delie An
DOI:10.1016/j.tet.2019.05.039
日期:2019.7
A Cu-mediated ligand-free arylation of NH-sulfoximines and sulfonamides by arylhydrazine hydrochlorides was herein demonstrated. The oxidative transformation provided an easy access towards N-aryl sulfoximines and sulfonamides in high yields (up to 93% yields) with broad functional groups tolerance (up to 36 examples). The protocol was proposed to take place through the free radical pathway based on
Palladium-Catalyzed <i>N</i>-Arylation of Sulfoximines with Aryl Sulfonates
作者:Qingjing Yang、Pui Ying Choy、Qingyang Zhao、Man Pan Leung、Hoi Shan Chan、Chau Ming So、Wing-Tak Wong、Fuk Yee Kwong
DOI:10.1021/acs.joc.8b01599
日期:2018.9.21
Palladium-catalyzed C–N bond coupling reaction between NH-sulfoximines and aryl halides (e.g., −Br, −I, and −Cl and pseudohalides −OTf and −ONf) was successfully achieved. Nevertheless, aryltosylates/mesylates left much to be achieved. In this report, a general N-arylation of sulfoximines with aryl sulfonates is described. Using Pd(OAc)2/MeO-CM-phos complex, the N-aryl sulfoximine products can be
Catalytic Coupling of Aryl Sulfonates with sp2-Hybridized Nitrogen Nucleophiles: Palladium- and Nickel-catalyzed Synthesis of N-Aryl Sulfoximines
作者:Carsten Bolm、Jens P. Hildebrand、Jens Rudolph
DOI:10.1055/s-2000-6287
日期:——
Several sulfoximines have been arylated in good to high yield by palladium catalysis using aryl nonaflates and aryl triflates. Moreover, the successful synthesis of N-aryl sulfoximines from aryl tosylates is described using a Ni(COD)2/BINAP catalyst.
Copper catalyzed N-arylation of sulfoximines with aryldiazonium salts in the presence of DABCO under mild conditions
作者:Siddharth Baranwal、Jeyakumar Kandasamy
DOI:10.1016/j.tetlet.2020.152079
日期:2020.7
tetrafluoroborates is demonstrated in the presence of copper chloride and DABCO. A wide range of aryl and alkyl sufoximines are participated in the couplingreaction with different aryldiazonim salts bearing electron donating and withdrawinggroups and provided the desired products in 67–88% yields. The reaction proceeds through a radical mechanism.