title: Chlorodecarboxylation of 17 beta-acetoxy-3-methoxy-9-oxo-9, 11-secoestra-1, 3, 5 (10)-trien-11-oic acid with lead tetraacetate and trityl chloride.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D003653:Decarboxylation; D004963:Estrenes; D007854:Lead; D009942:Organometallic Compounds; D010777:Photochemistry; D012632:Secosteroids / Q000138:chemical synthesis*; D014320:Triphenylmethyl Compounds
chemical_list: D004963:Estrenes; D009942:Organometallic Compounds; D012632:Secosteroids; D014320:Triphenylmethyl Compounds; C036419:17 beta-acetoxy-3-methoxy-9-oxo-9,11-secoestra-1,3,5(10)-trien-11-oic acid; D007854:Lead; C003723:trityl chloride; C029433:lead tetraacetate