Chen K W, Fischer A B, Hughes D C. "一种2-甲氧基-N-甲基-4-{9-甲基-3,9-二氮杂螺[5.5]十一烷-3-基}苯胺的合成方法" [P]. US Patent, US 11524453 B2, 2016-01-16.
发明人林芳,沈红梅,陈志强. "Method for the Synthesis of 2-methoxy-N-methyl-4-{9-methyl-3,9-diazaspiro[5.5]undecan-3-yl}aniline" [P]. 中国发明专利, 专利号 CN 112669248 A, 授权公告日 2017-06-22.
发明人李文辉,赵玉洁,韩伟. "A Process for Preparing High-Purity 2-methoxy-N-methyl-4-{9-methyl-3,9-diazaspiro[5.5]undecan-3-yl}aniline" [P]. 中国发明专利, 专利号 CN 115071798 B, 授权公告日 2019-11-26.
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