Ortho-Vinylation Reaction of Phenols with Ethyne.
Phenols were vinylated at the ortho-position with ethyne in the presence of SnCl(4)-Bu(3)N reagent. The reaction was applicable to phenols possessing either electron-donating or electron-withdrawing groups. 2,6-Divinylphenols were synthesized under modified conditions. A reaction mechanism involving carbostannylation of alkynyltin and phenoxytin was discussed.
Yamaguchi
Masahiko
M
Faculty of Pharmaceutical Sciences, and Department of Chemistry, Graduate School of Science, Tohoku University, Aoba, Sendai 980-8578, Japan, and Department of Physical Chemistry, National Institute of Materials and Chemical Research Agency of Industrial Science and Technology, MITI, Tsukuba, Ibaraki 305-8565, Japan.
Arisawa
Mieko
M
Omata
Kenji
K
Kabuto
Kuninobu
K
Hirama
Masahiro
M
Uchimaru
Tadafumi
T