Development of Intramolecular [4+1] Cycloadditions Tristan H. Lambert, Department of Chemistry, Columbia University
O
O CO2Me
I2, Mg(ClO4)2
CO2Me
Et3N
84% yield one-pot formal [4+1] cycloaddition QuickTime™ and a decompressor are needed to see this picture.
H O I2
CO2Me
H
MgI2 (formed in situ)
