Development of a Robust and Scalable Process for the Large-Scale Preparation of Vilazodone
作者:Zihong Zhou、Yahui Feng、Yongbo Xu、Shuming Wu、Jingping Kou、Yanqing Hu、Meng Zhang、Weijian Ling、Lei Zhang、Zhongqing Wang
DOI:10.1021/acs.oprd.2c00206
日期:2022.10.21
functionality transformations, this process successfully prevented the tosyl group from encountering any alkoxides, which would inevitably lead to the generation of alkyl tosylate and indole N-alkylated vilazodone byproducts. In addition, this manufacturing process has also been demonstrated on a kilogram scale, delivering 1.05 kg of vilazodone hydrochloride with an overall yield of 71% (calculated from ethyl
开发了一种稳健且可扩展的维拉佐酮合成方法,以避免在酒精条件下形成源自 N-去甲苯基化反应的杂质。在我们的研究中,这些杂质,潜在的基因毒性甲苯磺酸烷基酯和不合格的吲哚 N-烷基化维拉佐酮,被确定为从未报告过的工艺杂质。通过调整官能团的转变,该过程成功地防止了甲苯磺酰基遇到任何醇盐,这将不可避免地导致甲苯磺酸烷基酯和吲哚N-烷基化维拉佐酮副产物的产生。此外,该制造工艺也已在千克规模上进行了演示,可生产 1.05 千克盐酸维拉佐酮,总产率为 71%(以 5-(哌嗪-1-基)苯并呋喃-2-甲酸乙酯盐酸盐计算)7·盐酸)。产品HPLC检测纯度>99.5%,任何单一杂质<0.1% HPLC面积百分比。未检测到吲哚 N-烷基化维拉佐酮,产率比之前的 Friedel-Crafts 酰化途径高 10%。