The present invention relates to the synthesis of Levocetirizine using commercially available and economical reagents. The present invention provides the novel method of conversion of p-chlorobenzophenone to levocetirizine hydrochloride with higher chemical and optical purity.
ABSTRACT
A novel electrochemical process for the preparation of thieno [3,2-c] pyridine derivatives of formula I particularly clopidogrel (II) and salts thereof preferably clopidogrel hydrogen sulphate (V).