Process for preparing methylene bisphosphonic and salts
申请人:AstraZeneca UK Limited
公开号:US06657076B1
公开(公告)日:2003-12-02
A process for the preparation of salts of substituted or unsubstituted methylene bisphosphonic acids by hydrolysing the corresponding acid ester with hydrochloric acid, removing water from the acid azeotropically prior to addition of an amine or a base to produce the resultant salt in good yield.