Synthèse, à partir du (+) — camphre,d'hétérocycles dérives des tétrahydroxanthone,tétrahydroacridone,tétrahydroacridine et octahydroacridine

Derivatives of acridine, acridone and xanthone were prepared from (+)-camphor, 3-Arylidene, 3-arylmehtyl or 3-aroylcamphors with an halogen in the ortho position and dibornanonylarylmethanes may be uased aas precursors. Ring closure may be induced by ammonia, armoatic amines or potassium hydroxide with or without a catalyst. Good yaields were obtained. In come casaes, the reaction goes with an aromatisation of the heterocyclic moiety.