138738-19-9Relevant academic research and scientific papers
Synthesis of 9,10-Diarylanthracenes via Mg(TMP) 2 ·2LiCl-Mediated Benzyne Generation/[4+2] Cycloaddition and Deoxygenation of 9,10-Epoxyanthracene Intermediates
Miyamoto, Naoya,Nakazawa, Yuki,Nakamura, Takanori,Okano, Kentaro,Sato, Sota,Sun, Zhe,Isobe, Hiroyuki,Tokuyama, Hidetoshi
supporting information, p. 513 - 518 (2017/12/08)
A new synthetic route to functionalized 9,10-diarylanthracenes has been developed. 9,10-Epoxyanthracene intermediates were prepared by [4+2] cycloaddition of 1,3-diarylisobenzofuran with a variety of functionalized benzyne intermediates, which were obtained by Mg(TMP) 2 ·2LiCl-mediated benzyne generation. For the cleavage of the resultant 9,10-epoxyanthracene intermediates, we developed mild deoxygenation conditions using a combination of trifluoroacetic acid and Et 3 SiH. The utility of this sequence was demonstrated by application to the synthesis of 5,7,12,14-tetraphenylpentacene.
New efficient protocol for aryne generation. Selective synthesis of differentially protected 1,4,5-naphthalenetriols
Matsumoto, Takashi,Hosoya, Takamitsu,Katsuki, Miyoko,Suzuki, Keisuke
, p. 6735 - 6736 (2007/10/02)
Arynes are generated cleanly and rapidly by halogen-lithium exchange of ortho-haloaryl triflates with n-BuLi at -78°C. [2+4]-Cycloaddition of α-alkoxyaryne with 2-methoxyfuran proceeded regioselectively (head-to-head) to afford 1,4,5-naphthalenetriols.
