title: Cu(I)-catalyzed intramolecular C-C coupling of activated methylene compounds with vinyl halides: efficient synthesis of functionalized alkylidenecyclobutanes.
mesh_terms: D002244:Carbon / Q000737:chemistry*; D002384:Catalysis; D003300:Copper / Q000737:chemistry*; D003503:Cyclobutanes / Q000138:chemical synthesis* / Q000737:chemistry; D006219:Halogens / Q000737:chemistry*; D014753:Vinyl Compounds / Q000737:chemistry*
chemical_list: D003503:Cyclobutanes; D006219:Halogens; D014753:Vinyl Compounds; D002244:Carbon; D003300:Copper