Iodinane- and Metal-Free Synthesis of N-Cyano Sulfilimines: Novel and Easy Access of NH-Sulfoximines
摘要:
The synthesis of N-cyanosulfilimines can readily be achieved by reaction of the corresponding sulfides with cyanogen amine in the presence of a base and NBS or I-2 as halogenating agents. Oxidation followed by C-N bond cleavage affords synthetically useful NH-free sulfoximines.
AbstractDie Succinimido‐sulfoniumchloride 2 kondensieren mit Cyanamid (3) unter Triethylamin‐Katalyse zu den N‐Cyanosulfimiden 4. In analoger Weise erhält man aus 2 und den 2‐(1‐Aminoalkyliden)malondinitrilen 5 die Sulfimide 6 sowie aus 2 und den N‐Cyanamidinen 7 die Sulfimide 8.
Iodinane- and Metal-Free Synthesis of <i>N</i>-Cyano Sulfilimines: Novel and Easy Access of <i>N</i>H-Sulfoximines
作者:Olga García Mancheño、Olivia Bistri、Carsten Bolm
DOI:10.1021/ol7016577
日期:2007.9.1
The synthesis of N-cyanosulfilimines can readily be achieved by reaction of the corresponding sulfides with cyanogen amine in the presence of a base and NBS or I-2 as halogenating agents. Oxidation followed by C-N bond cleavage affords synthetically useful NH-free sulfoximines.
Anodic Dehydrogenative Cyanamidation of Thioethers: Simple and Sustainable Synthesis of
<i>N</i>
‐Cyanosulfilimines
作者:Martin Klein、Siegfried R. Waldvogel
DOI:10.1002/anie.202109033
日期:2021.10.18
A novel and very simple to perform electrochemical approach for the synthesis of several N-cyanosulfilimines in good to excellent yields was established. This method provides access to biologically relevant sulfoximines by consecutive oxidation using electro-generated periodate. This route can be easily scaled-up to gram quantities. The S,N coupling is carried out at an inexpensive carbon anode by