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 Et3SiH. The utility of this sequence was demonstrated by application to the synthesis of 5,7,12,14-tetraphenylpentacene.

中文翻译：

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通过Mg(TMP)2·2LiCl介导的苯生成/9,10-环氧蒽中间体的[4+2]环加成和脱氧合成9,10-二芳基蒽

已开发出功能化 9,10-二芳基蒽的新合成路线。9,10-环氧蒽中间体是通过 1,3-二芳基异苯并呋喃与多种功能化的苄中间体的 [4+2] 环加成反应制备的，这些中间体是通过 Mg(TMP)2·2LiCl 介导的苄生成获得的。为了裂解得到的 9,10-环氧蒽中间体，我们使用三氟乙酸和 Et3SiH 的组合开发了温和的脱氧条件。通过应用于 5,7,12,14-四苯基并五苯的合成证明了该序列的效用。