{ "items" : [
    { "id" : "http://dbpedia.org/resource/1,3-Dipolar_cycloaddition"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "The 1,3-dipolar cycloaddition is a chemical reaction between a 1,3-dipole and a dipolarophile to form a five-membered ring. The earliest 1,3-dipolar cycloadditions were described in the late 19th century to the early 20th century, following the discovery of 1,3-dipoles. Mechanistic investigation and synthetic application were established in the 1960s, primarily through the work of Rolf Huisgen." ] ,
        "http://www.w3.org/2000/01/rdf-schema#seeAlso" : [ "http://dbpedia.org/resource/Azomethine_ylide"] } } }
