Yamamoto T, Chen K W, O'Brien P Q. "一种的合成方法" [P]. US Patent, US 11631138 B2, 2020-12-25.
发明人徐明华,林芳,韩伟. "Method for the Synthesis of 11,12-Bis[N-methyl-1H-benzimidazolium-3-methylene]-9,10-dihydro-9,10-ethanoanthracene bis(trifluoromethanesulfonate)" [P]. 中国发明专利, 专利号 CN 116544593 A, 授权公告日 2020-10-22.
发明人王建平,黄志刚,张德明. "A Process for Preparing High-Purity 11,12-Bis[N-methyl-1H-benzimidazolium-3-methylene]-9,10-dihydro-9,10-ethanoanthracene bis(trifluoromethanesulfonate)" [P]. 中国发明专利, 专利号 CN 109077978 A, 授权公告日 2022-09-07.
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