Water extract of pomegranate ash (WEPA), an agro waste (bio) derived novel and sustainable medium, has been developed for the Ullmann coupling of aryl halides under added base, ligand and reducing agent free palladium catalysis in open-air.
A new free radical/palladium cooperative catalyzed formylation of aryl halides with glyoxylic acid as the formyl source under oxygen conditions has been developed. Various aromatic and heteroaromatic aldehydes were produced in medium to good yields.
A method is presented for the synthesis of diaryl cyclic vinylogous esters. The sequence of C(sp3)−H arylation events is programed under the differentiated reactivity of the aryl halides, and the...