Palladium-Catalyzed Carbonylation of Aryl Iodides with Sulfinamides
作者:Anna Karin Belfrage、Prasad Wakchaure、Mats Larhed、Anja Sandström
DOI:10.1002/ejoc.201500875
日期:2015.11
A facile palladium(0)-catalyzed carbonylative protocol for the generation of new acyl-sulfinamides in moderate to good yields is described. Aliphatic and aromatic sulfinamides were exploited as hitherto unexplored nucleophiles in carbonylation chemistry, with use of CO gas generated ex situ from Mo(CO)6 in a sealed two-chamber system. Both electron-poor and electron-rich (hetero)aryl iodides were employed
描述了一种简便的钯(0)催化羰基化方案,用于以中等至良好的产率生成新的酰基亚磺酰胺。脂肪族和芳香族亚磺酰胺在羰基化化学中被用作迄今为止尚未探索的亲核试剂,在密封的两室系统中使用从 Mo(CO)6 异位产生的 CO 气体。贫电子和富电子(杂)芳基碘化物都用作亲电试剂。两室系统和无机碱的使用对于酰基亚磺酰胺产品的有效合成是必不可少的。最后,证明了在 Cs2CO3 作为碱存在下,在气球压力下的 CO 下,一锅(或单瓶)合成酰基亚磺酰胺是可行的。
Synthesis of CF<sub>3</sub>-Substituted Sulfoximines from Sulfonimidoyl Fluorides
作者:Rafal Kowalczyk、Andrew J. F. Edmunds、Roger G. Hall、Carsten Bolm
DOI:10.1021/ol103030w
日期:2011.2.18
N-Protected trifluoromethyl-substituted sulfoximines have been prepared by treatment of sulfonimidoylfluorides with a combination of the Ruppert−Prakash reagent (TMSCF3) and tetrabutyl ammonium fluoride (TBAF). The starting materials were accessed following two synthetic routes, and for each reaction sequence the substrate scope was evaluated. Accordingly, a wide variety of aryl-substituted products
Direct Synthesis of <i>N</i>
-Acyl Sulfonimidamides and <i>N</i>
-Sulfonimidoyl Amidines from Sulfonimidoyl Azides
作者:Ganesh Chandra Nandi、Irfana Jesin
DOI:10.1002/adsc.201800215
日期:2018.7.4
demonstrate their utility in the construction of N‐acyl sulfonimidamides and N‐sulfonimidoyl amidines. N‐Acyl sulfonimidamides were synthesized in good to very good yields via “on water” copper‐catalyzed three‐component coupling between sulfonimidoyl azide, alkynes and water. The use of amines as nucleophiles yielded a wide range of N‐sulfonimidoyl amidines. Both reactions were completed in very short
Constructing <i>N</i>-Acyl/<i>N</i>-Sulfonyl Aza-Sulfur Derivatives from Amides/Sulfonamides and Thiophthalimides via Oxidant Regulation
作者:Yazhou Li、Yongkun Wang、Feifei Fang、Yu Zhang、Chunpu Li、Tao Yu、Qiangqiang Chen、Jiang Wang、Hong Liu
DOI:10.1021/acs.orglett.3c02166
日期:2023.8.18
Here, we have constructed five distinct types of N-acyl or N-sulfonyl aza-sulfur scaffolds using readily available (sulfon)amides and thiophthalimides with precise regulation of oxidants. Our novel methods feature one-pot mild reaction conditions and simple operation, thereby making them highly convenient for the late-stage diversification of various amide drugs, bioactive molecules, and peptides.
Synthesis of Amino-Functionalized Sulfonimidamides and Their Application in the Enantioselective Henry Reaction
作者:Marianne Steurer、Carsten Bolm
DOI:10.1021/jo100326x
日期:2010.5.21
Amino-functionalized sulfonimidamides have been prepared by aziridinium ring-Opening reactions and nucleophilic substitutions of sulfonimidoyl chlorides. Whereas the former reactions afford separable diastereomeric products, the latter provide single stereoisomers. Application of the resulting stereochemically homogeneous sulfonimidamides as ligands in asymmetric copper-catalyzed Henry reactions of aromatic aldehydes with nitromethane led to products with enantioselectivities up to 95% ee in good yields.