Merging Cross-Metathesis and Radical Cyclization: A Straightforward Access to 4-Substituted Benzosultams
摘要:
N-Alkyl-N-allyl-2-bromobenzenesulfonamides were functionalized by selective E-cross-metathesis with various alkenes. Subsequent radical cyclization initiated by 2,2'-azobis(iso-butyronitrile) and tris(trimethylsilyl) silane gave the corresponding 4-substituted benzosultams directly in moderate-to-good yields.
N-Alkyl-N-allyl-2-bromobenzenesulfonamides were functionalized by selective E-cross-metathesis with various alkenes. Subsequent radical cyclization initiated by 2,2'-azobis(iso-butyronitrile) and tris(trimethylsilyl) silane gave the corresponding 4-substituted benzosultams directly in moderate-to-good yields.