Bay-region annulative π-extension of o-iodobiphenyls with aliphatic anhydrides was developed. Many o-iodobiphenyls and aliphatic anhydrides can react well under the optimized conditions. A lot of phenanthrol derivatives can be efficiently prepared by this approach. The control experiments support that dibenzopalladacyclopentadienes may be the reaction intermediates.

中文翻译：

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Pd(OAc)2 催化脂肪族酸酐对邻碘联苯的湾区环化 π 延伸

开发了邻碘联苯与脂肪族酸酐的湾区环化 π 延伸。许多邻碘联苯和脂肪族酸酐在优化条件下可以很好地反应。通过这种方法可以有效地制备许多菲酚衍生物。对照实验支持二苯并钯环戊二烯可能是反应中间体。