Catalyst-free photocyclopropanation of dibromomalonates with alkenes: an approach to multisubstituted cyclopropanes. Issue 46 (18th November 2015)

• Record Type: Journal Article
• Authors: Zhang, Yanbin; An, Yong; Sun, Jing; Ding, Aishun; Wang, Yu; Rios, Ramon; Guo, Hao
• Is Part Of: Tetrahedron letters. Volume 56:Issue 46(2015)
• Page Start: 6499
• Page End: 6502
• Publication Date: 2015-11-18
• Subjects: Photochemistry -- Cyclopropanation -- Catalyst-free -- Cyclopropane -- Mechanism; Chemistry, Organic -- Periodicals; 547.005
• DOI: 10.1016/j.tetlet.2015.10.012
• Languages: English
• ISSNs: 0040-4039

Abstract

Graphical abstract: We report herein a novel photocyclopropanation of dibromomalonates with alkenes in the presence of Hünig base. This protocol provides an environmentally benign approach for the synthesis of multisubstituted cyclopropanes, since no catalyst is required. The Photo-induced Electron Transfer (PET) from Hünig base to dibromomalonate is the key process during this transformation. Abstract: We report herein a novel photocyclopropanation of dibromomalonates with alkenes in the presence of Hünig base. This protocol provides an environmentally benign approach for the synthesis of multisubstituted cyclopropanes, since no catalyst is required. The Photo-induced Electron Transfer (PET) from Hünig base to dibromomalonate is the key process during this transformation.