A nickel-catalyzed cycloaddition of α,β-unsaturated oximes with alkynes to afford 2,3,4,6-tetrasubstituted pyridine derivatives has been developed. The reaction involves oxidative addition of the N...
已开发出镍催化的 α,β-不饱和肟与炔烃的环加成反应,得到 2,3,4,6-四取代的吡啶衍生物。该反应涉及 N 的氧化加成...
Ritter-type iodo(<scp>iii</scp>)amidation of unactivated alkynes for the stereoselective synthesis of multisubstituted enamides
transformations remain largely elusive. Herein, we report a Ritter-type trans-difunctionalization of alkynes with a trivalent iodine electrophile and nitrile, which affords β-iodanyl enamides in moderate to good yields. Mediated by benziodoxole triflate (BXT), the reaction proves applicable to a variety of internalalkynes as well as to various alkyl- and arylnitriles. The benziodoxole group in the product serves