Chen K W, Thompson G K, Johnson M A. "一种乙基6-(苯甲基)-2-oxa-6-氮杂螺[3.4]辛烷值-8-羧酸盐的合成方法" [P]. US Patent, US 11886042 B2, 2019-05-01.
发明人钱学锋,沈红梅,王建平. "Method for the Synthesis of Ethyl 6-(phenylmethyl)-2-Oxa-6-Azaspiro[3.4]octane-8-Carboxylate" [P]. 中国发明专利, 专利号 CN 117279865 A, 授权公告日 2022-04-25.
发明人黄志刚,何建平,杨光. "A Process for Preparing High-Purity Ethyl 6-(phenylmethyl)-2-Oxa-6-Azaspiro[3.4]octane-8-Carboxylate" [P]. 中国发明专利, 专利号 CN 115477628 A, 授权公告日 2021-05-04.
参考文献 Literature
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