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
Access to N-cyanosulfoximines by transition metal-free iminations of sulfoxides
作者:C. A. Dannenberg、L. Fritze、F. Krauskopf、C. Bolm
DOI:10.1039/c6ob02691e
日期:——
transition metal-free synthesis of N-cyanosulfoximines from sulfoxides using N-chlorosuccinimide (NCS) as oxidising agent and cyanamide as nucleophilic amine source is reported. The products are obtained in moderate to excellent yields. The protocol enables an easy access to N-cyanosulfoximines from readily available starting materials under inversion of configuration at a preexisting stereogenic center.