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公开(公告)号:US08835680B1
公开(公告)日:2014-09-16
申请号:US14117343
申请日:2012-05-07
申请人: Qingjun Deng , Shaohui Wang , Qiang Zhu , Taiping Gao , Yongsheng Li
发明人: Qingjun Deng , Shaohui Wang , Qiang Zhu , Taiping Gao , Yongsheng Li
IPC分类号: C07C61/16 , C07C53/134 , C07C51/00
CPC分类号: C07C51/00 , C07C51/353 , C07C403/20 , C07C2601/16 , C07C59/64
摘要: A stereospecific synthesis process for tretinoin compounds comprises the following steps: using substituted triphenyl phosphine salt and β-formyl crotonic acid as raw material to carry out WITTIG reaction under the action of alkali; then adjusting the pH of the reaction liquid to 5-10; adding palladium compound or rhodium compound to carry out isomerization directly and obtain tretinoin compounds with desired configuration. The product yield of the process is high and the intermediate product in the reaction dose not need to be separated. The process is easy to operate and can save the production cost and as well is suitable for industrial production.
摘要翻译: 维A酸化合物的立体特异性合成方法包括以下步骤:使用取代的三苯基膦盐和巴豆酮基巴豆酸作为原料,在碱的作用下进行WITTIG反应; 然后将反应液的pH调节至5-10; 加入钯化合物或铑化合物直接进行异构化,得到具有所需结构的维甲酸化合物。 该方法的产物产率高,反应中的中间产物不需要分离。 该工艺易于操作,可节省生产成本,适用于工业生产。
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公开(公告)号:US20140275617A1
公开(公告)日:2014-09-18
申请号:US14117343
申请日:2012-05-07
申请人: Qingjun Deng , Shaohui Wang , Qiang Zhu , Taiping Gao , Yongsheng Li
发明人: Qingjun Deng , Shaohui Wang , Qiang Zhu , Taiping Gao , Yongsheng Li
IPC分类号: C07C51/00
CPC分类号: C07C51/00 , C07C51/353 , C07C403/20 , C07C2601/16 , C07C59/64
摘要: A stereospecific synthesis process for tretinoin compounds comprises the following steps: using substituted triphenyl phosphine salt and β-formyl crotonic acid as raw material to carry out WITTIG reaction under the action of alkali; then adjusting the pH of the reaction liquid to 5-10; adding palladium compound or rhodium compound to carry out isomerization directly and obtain tretinoin compounds with desired configuration. The product yield of the process is high and the intermediate product in the reaction dose not need to be separated. The process is easy to operate and can save the production cost and as well is suitable for industrial production.
摘要翻译: 维A酸化合物的立体特异性合成方法包括以下步骤:使用取代的三苯基膦盐和巴豆酮基巴豆酸作为原料,在碱的作用下进行WITTIG反应; 然后将反应液的pH调节至5-10; 加入钯化合物或铑化合物直接进行异构化,得到具有所需结构的维甲酸化合物。 该方法的产物产率高,反应中的中间产物不需要分离。 该工艺易于操作,可节省生产成本,适用于工业生产。
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