Benzannulation from alkyne without metallic catalysts at room temperature to 100 degrees C.
An efficient, novel metal-catalyst-free aminobenzannulation of 2-(prop-2-ynyl)(oxo)benzenes 1 with various dialkylamines 2 afforded a variety of 2-aminonaphthalenes 3 in good to excellent yields under mild reaction conditions at room temperature to 100 degrees C (at most).
Jin
Tienan
T
Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan. tjin@mail.tains.tohoku.ac.jp
Yang
Fan
F
Yamamoto
Yoshinori
Y