A visible-light-induced
cascade cyanoalkylsulfonylation/cyclization/aromatization
of N-propargyl aromatic amines with K2S2O5 and cyclobutanone oxime esters for the
construction of cyanoalkylsulfonylated quinolines is developed. This
cascade transformation features mild reaction conditions, a broad
substrate scope, and excellent functional group compatibility, providing
a convenient route toward cyanoalkylsulfonylated quinolines via the
formation of a C–C bond and two C–S bonds in one step.
A visible light photocatalyzed cascade sulfonylation/cyclization of 1-(allyloxy)-2-(1-arylvinyl)benzenes with sulfonyl chlorides for the con-struction of sulfonated benzoxepines is developed. In the presence of Eosin Y (2.0 mol%) as a photocatalyst...
A visible light photocatalyzed or metal-catalyzed three-component cyanoalkylsulfonylation of 1-(allyloxy)-2-(1-arylvinyl)benzenes, potassium metabisulfite and cyclobutanone oxime esters is developed. The present reaction provides a direct approach to diverse cyanoalkylsulfonylated benzoxepines in...
A palladium-catalyzed radical cascade cyanoalkylsulfonylation/-cyclization of 3-arylethynyl-[1,1'-biphenyl]-2-carbonitriles with DABCO•(SO2)2 and cyclobutanone oxime esters via cleavage of C–C single bond and insertion of SO2 was described. A series of cyanoalkylsulfone-containing cyclopenta[gh]phenanthridines...
A tert-butyl hydroperoxide-initiated radical cyclization of 1-(allyloxy)-2-(1-arylvinyl) benzenes with sulfinic acids for the construction of sulfonated benzoxepines is developed. This reaction involves a radical pathway and offers a straightforward route to the formation of seven-membered ring via sulfonylation/cyclization process. This methodology features mild reaction conditions, a broad substrate scope and good functional group tolerance.
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