title: Lewis acid catalyzed intramolecular [3 + 2] cross cycloadditions of cobalt-alkynylcyclopropane 1,1-diesters with carbonyls for construction of medium-sized and polycyclic skeletons.
abstract: A Lewis acid catalyzed intramolecular [3 + 2] cross cycloaddition of cobalt-alkynylcyclopropane 1,1-diesters with carbonyls has been successfully developed. Together with simple and efficient postcycloadditions of the cobalt-alkyne moiety, a general and efficient strategy for construction of structurally complex and diverse medium-sized skeletons and related polycycles was supplied successfully.
authors.affiliation: School of Pharmaceutical Science and Technology, Tianjin University , Tianjin 300072, China.
authors.forename: Junhui
authors.initials: J
authors.lastname: Zhang
authors.forename: Siyang
authors.initials: S
authors.lastname: Xing
authors.forename: Jun
authors.initials: J
authors.lastname: Ren
authors.forename: Shende
authors.initials: S
authors.lastname: Jiang
authors.forename: Zhongwen
authors.initials: Z
authors.lastname: Wang
mesh_terms: D000480:Alkynes / Q000737:chemistry*; D002384:Catalysis; D003035:Cobalt / Q000737:chemistry*; D061565:Cycloaddition Reaction; D003521:Cyclopropanes / Q000737:chemistry*; D058116:Lewis Acids / Q000737:chemistry*; D015394:Molecular Structure; D011083:Polycyclic Compounds / Q000138:chemical synthesis* / Q000737:chemistry*
chemical_list: D000480:Alkynes; D003521:Cyclopropanes; D058116:Lewis Acids; D011083:Polycyclic Compounds; D003035:Cobalt