Title: Method for sulphonation of compounds comprising free hydroxyl (oh) groups or primary or secondary amines
Application Number: 02827691 Application Date: 2002.11.28
Publication Number: 1617889 Publication Date: 2005.05.18
Approval Pub. Date: 2006.11.29 Granted Pub. Date: 2006.11.29
International Classifi-cation: C08B37/00;C08B37/02;C07C303/00;C07C309/00;C07B45/00
Applicant(s) Name: Organes Tissus Regeneration Re Address:
Inventor(s) Name: Petit Emmanuel;Garcia-papy Dulce;Barbier-chassefie
Attorney & Agent: yu hui
Abstract:
    The invention concerns a method for sulphonation of a compound having one or several free hydroxyl functions and/or one or several substituted or unsubstituted primary or secondary amine functions. The invention is characterized in that it comprises treating said compound with the SO3-DMF complex in the presence of an acid capturing agent. The acid capturing agent is advantageously selected in the group comprising alkenes or alkines with boiling point lower than 100 DEG C or a mixture thereof.
Time: 4