1027046-05-4Relevant articles and documents
Solid-phase synthesis of indol-2-ones by microwave-assisted radical cyclization
Akamatsu, Hisashi,Fukase, Koichi,Kusumoto, Shoichi
, p. 1049 - 1053 (2007/10/03)
Solid-phase synthesis of indol-2-ones (2-oxindoles) by means of aryl radical cyclization of resin-bound N-(2-bromophenyl)acrylamides using Bu 3SnH is described. Among various solvents tested, DMF was found to be the best choice for the radical cyclization inducing a reagent concentration effect of the polymer support. The reaction proceeded smoothly under microwave irradiation to give the desired indol-2-ones within a very short reaction time in comparison to conventional thermal heating. In this reaction, various indol-2-ones were synthesized by using commercially available 2-bromoanilines and acryloyl chloride derivatives.