公开(公告)号：US20170210692A1

公开(公告)日：2017-07-27

申请号：US15315401

申请日：2015-06-10

Applicant: BRACCO IMAGING S.P.A.

Inventor： Roberta FRETTA ,  Pietro DELOGU ,  Fernanda DI GIORGIO ,  Alfonso NARDELLI ,  Stefano SGUASSERO ,  Carlo Felice VISCARDI

IPC: C07C67/08 ,  B01D3/00 ,  C07C67/287 ,  C07C51/44 ,  C07C67/54

CPC classification number: C07C67/08 ,  B01D3/009 ,  C07B2200/07 ,  C07C51/44 ,  C07C67/287 ,  C07C67/54 ,  C07C69/63 ,  C07C69/14 ,  C07C53/08 ,  C07C59/08

Abstract: The present invention relates to a method for the acetylation of an aqueous solution of lactic acid to (S)-2-acetyloxypropionic acid. The process comprises in particular removing water from the solution of lactic acid and reacting lactic acid with acetic anhydride in the presence of acetic acid.

公开(公告)号：US20180222840A1

公开(公告)日：2018-08-09

申请号：US15946204

申请日：2018-04-05

Applicant: BRACCO IMAGING S.P.A.

Inventor： Roberta FRETTA ,  Pietro DELOGU ,  Fernanda DI GIORGIO ,  Alfonso NARDELLI ,  Stefano SGUASSERO ,  Carlo Felice VISCARDI

IPC: C07C67/08 ,  C07C51/44 ,  C07C67/287 ,  C07C67/54 ,  B01D3/00

CPC classification number: C07C67/08 ,  B01D3/009 ,  C07B2200/07 ,  C07C51/44 ,  C07C67/287 ,  C07C67/54 ,  C07C69/63 ,  C07C69/14 ,  C07C53/08 ,  C07C59/08

Abstract: The present invention relates to a method for the acetylation of an aqueous solution of lactic acid to (S)-2-acetyloxypropionic acid.The process comprises in particular removing water from the solution of lactic acid and reacting lactic acid with acetic anhydride in the presence of acetic acid.

公开(公告)号：US20190225570A1

公开(公告)日：2019-07-25

申请号：US16276252

申请日：2019-02-14

Applicant: BRACCO IMAGING S.P.A.

Inventor： Roberta FRETTA ,  Pietro DELOGU ,  Fernanda DI GIORGIO ,  Alfonso NARDELLI ,  Stefano SGUASSERO ,  Carlo Felice VISCARDI

IPC: C07C67/08 ,  C07C67/54 ,  B01D3/00 ,  C07C67/287 ,  C07C51/44

Abstract: The present invention relates to a method for the acetylation of an aqueous solution of lactic acid to (S)-2-acetyloxypropionic acid.The process comprises in particular removing water from the solution of lactic acid and reacting lactic acid with acetic anhydride in the presence of acetic acid.