Novel cyclization reaction of 1,omega-diiodo-1-alkynes without the loss of iodine atoms.
In the presence of 1-hexynyllithium (0.2-0.6 equiv.), 1,omega-diiodo-1-alkynes undergo a new type of cyclization reaction without the loss of two iodine atoms to afford (diiodomethylene)cycloalkanes.
Harada
Toshiro
T
Department of Chemistry and Materials Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan. harada@chem.kit.ac.jp
Mizunashi
Kenta
K
Muramatsu
Keiko
K