Copper-Mediated Simple and Efficient Synthesis of Tribenzohexadehydro [12] annulene and Its Derivatives

M Iyoda, S Sirinintasak, Y Nishiyama, A Vorasingha…

Index: Iyoda, Masahiko; Sirinintasak, Siriwan; Nishiyama, Yoshihiro; Vorasingha, Anusorn; Sultana, Fatema; Nakao, Kazumi; Kuwatani, Yoshiyuki; Matsuyama, Haruo; Yoshida, Masato; Miyake, Yoshihiro Synthesis, 2004 , # 9 p. 1527 - 1531

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Citation Number: 18

Abstract

Abstract A simple and efficient synthesis of tribenzohexadehydro [12] annulene and its derivatives was carried out using coupling reaction of acetylenes with iodoarenes in the presence of catalytic amounts of CuI and PPh 3, together with three equivalents of K 2 CO 3 in DMF. This synthetic procedure was applied to the synthesis of a large annulenoannulene derivative.