CN Patent

CN111484458B — 一种2-羟基-5-磺酸基嘧啶的制备方法

Assigned to Qidong Bisheng Pharmaceutical Technology Co ltd · Expires 2022-12-27 · 3y expired

What this patent protects

本发明公开了一种2‑羟基‑5‑磺酸基嘧啶的简易制备方法。该方法以2‑卤代嘧啶为原料,在一定温度下同氯磺酸反应,实现2‑羟基‑5‑磺酸基嘧啶的直接制备,反应结束后静置过夜,产品经过滤、有机溶剂洗涤、干燥得2‑羟基‑5‑磺酸基嘧啶纯品,该工艺具有反应条件温和、操作过程简单、产物收率高等优点,适合工业规模生产,为相关化合物及其衍生物的制备提供了一条有效途径。

USPTO Abstract

本发明公开了一种2‑羟基‑5‑磺酸基嘧啶的简易制备方法。该方法以2‑卤代嘧啶为原料,在一定温度下同氯磺酸反应,实现2‑羟基‑5‑磺酸基嘧啶的直接制备,反应结束后静置过夜,产品经过滤、有机溶剂洗涤、干燥得2‑羟基‑5‑磺酸基嘧啶纯品,该工艺具有反应条件温和、操作过程简单、产物收率高等优点,适合工业规模生产,为相关化合物及其衍生物的制备提供了一条有效途径。

Drugs covered by this patent

Patent Metadata

Patent number
CN111484458B
Jurisdiction
CN
Classification
Expires
2022-12-27
Drug substance claim
No
Drug product claim
No
Assignee
Qidong Bisheng Pharmaceutical Technology Co ltd
Source
FDA Orange Book + USPTO grounding via Google Patents

Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.

Track this patent

Get a daily-checked alert when vulnerability score, expiry, classification, or assignee changes. Email, Slack, or Teams delivery. Pro: 50 watches, Free: 3.