title: Benzofurans or isochromenes via the ring-opening cyclization of cyclopropene derivatives with organolithiums.
abstract: A new and efficient approach to benzocycles from cyclopropene derivatives is described. Deprotection by organolithiums and subsequent ring-opening cyclization of the related 2-cyclopropenyl phenyl or benzyl acetates generated benzofurans and isochromenes in one pot.
authors.affiliation: Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, PR China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Liu
authors.forename: Shengming
authors.initials: S
authors.lastname: Ma
mesh_terms: D001572:Benzofurans / Q000737:chemistry*; D003500:Cyclization; D003521:Cyclopropanes / Q000737:chemistry*; D049934:Isocoumarins / Q000737:chemistry*; D018020:Lithium Compounds / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry*
chemical_list: D001572:Benzofurans; D003521:Cyclopropanes; D049934:Isocoumarins; D018020:Lithium Compounds; D009942:Organometallic Compounds; C021985:cyclopropene