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.