It is the combo! NaH in combination with 1,4-dioxane serves as the reagent for the radical chain reduction of various aryl halides. Hydrodehalogenation is initiated by 1,10-phenanthroline (phen) at elevated temperature and can be combined with a typical radical cyclization reaction. the reactions proceed via electron catalysis.

中文翻译：

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氢化钠和1,4-二恶烷对芳族溴化物和氯化物的自由基加氢脱卤

这是组合！NaH与1,4-二恶烷的组合用作各种芳基卤化物自由基链还原的试剂。加氢脱卤化反应是在高温下由1,10-菲咯啉（phen）引发的，可与典型的自由基环化反应结合使用。反应通过电子催化进行。