{ "items" : [
    { "id" : "http://dbpedia.org/resource/Pechmann_condensation"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "The Pechmann condensation is a synthesis of coumarins, starting from a phenol and a carboxylic acid or ester containing a β-carbonyl group.  The condensation is performed under acidic conditions.  The mechanism involves an esterification/transesterification followed by attack of the activated carbonyl ortho to the oxygen to generate the new ring.  The final step is a dehydration, as seen following an aldol condensation." ] ,
        "http://xmlns.com/foaf/0.1/depiction" : [ "http://commons.wikimedia.org/wiki/Special:FilePath/Pechmann_4methyllcoumarin.png" ] ,
        "http://dbpedia.org/ontology/thumbnail" : [ "http://commons.wikimedia.org/wiki/Special:FilePath/Pechmann_4methyllcoumarin.png?width=300"] } } }
