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.
<i>N</i>-Imidazolylation of Sulfoximines from<i>N</i>-Cyano Sulfoximines, 1-Alkynes, and<i>N</i>-Sulfonyl Azides
作者:Sanghyuck Kim、Ji Eun Kim、Jinsub Lee、Phil Ho Lee
DOI:10.1002/adsc.201500636
日期:2015.11.16
The rhodium-catalyzed N-imidazolylation of N-sulfonyl-1,2,3-triazoles with a variety of N-cyano sulfoximines has been developed for the synthesis of N-imidazolyl sulfoximines via elimination of molecular nitrogen. Copper-catalyzed [3+2] cycloaddition followed by rhodium-catalyzed N-imidazolylation from 1-alkynes, N-sulfonylazides, and N-cyano sulfoximines is also demonstrated for the synthesis of N-imidazolyl
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
Metal-Free Synthesis of N-Cyano-Substituted Sulfilimines and Sulfoximines
作者:Carsten Bolm、Ankur Pandey
DOI:10.1055/s-0030-1258192
日期:2010.9
corresponding sulfides, N-cyano sulfoximines can easily be accessed under metal-free conditions via the corresponding N-cyano-substituted sulfilimines. The reaction sequence involves a sulfide imination with cyanogen amide in presence of a base and N-bromosuccinimide (NBS) followed by an m-chloroperoxybenzoic acid (MCPBA) mediated oxidation of the resulting sulfilimine intermediates. halides - metal-free
Sulfoxide-to-Sulfilimine Conversions: Use of Modified Burgess-Type Reagents
作者:Christine M. M. Hendriks、Philip Lamers、Julien Engel、Carsten Bolm
DOI:10.1002/adsc.201300766
日期:2013.11.25
AbstractSulfoxides can directly be converted into N‐cyanosulfilimines using a new Burgess‐type reagent. By applying this strategy with a related reagent variant, synthetically valuable NH‐sulfoximines have been prepared from sulfoxides via N‐protected sulfilimines. The practical three‐step reaction sequence is generally high yielding and applicable to a wide range of substrates. The sulfoxide‐to‐sulfilimine conversion can also be performed under solvent‐reduced conditions in a ball mill.magnified image