title: Diversity-oriented synthesis of fused pyran gamma-lactones via an efficient Pd-thiourea-catalyzed alkoxycarbonylative annulation.
mesh_terms: D000438:Alcohols / Q000737:chemistry*; D002384:Catalysis; D007659:Ketones / Q000737:chemistry*; D007783:Lactones / Q000138:chemical synthesis* / Q000737:chemistry; D010165:Palladium / Q000737:chemistry*; D011714:Pyrans / Q000737:chemistry*; D013890:Thiourea / Q000737:chemistry*
chemical_list: D000438:Alcohols; D007659:Ketones; D007783:Lactones; D011714:Pyrans; C059688:alkoxyl radical; D010165:Palladium; D013890:Thiourea