METHOD FOR PREPARING DABIGATRAN ETEXILATE INTERMEDIATE, AND INTERMEDIATE COMPOUND
申请人:SHANGHAI INSTITUTE OF PHARMACEUTICAL INDUSTRY
公开号:US20170190666A1
公开(公告)日:2017-07-06
Disclosed are a method for preparing a dabigatran etexilate intermediate, and an intermediate compound. The method for preparing a dabigatran etexilate intermediate 4 comprises; reacting a compound 3 with a C
1
-C
3
alkyl alcohol solution of methylamine in an organic solvent, wherein, X=chlorine, bromine, or iodine. Also disclosed are an intermediate compound 3 and a preparation method thereof. The method for preparing a dabigatran etexilate intermediate of the present invention has the advantages of simple process, easy operation, high yield, and easy purification, thus being suitable for industrial production.
METHOD OF PREPARING DABIGATRAN ETEXILATE INTERMEDIATE AND INTERMEDIATE COMPOUND
申请人:Shanghai Institute Of Pharmaceutical Industry
公开号:EP3165521A1
公开(公告)日:2017-05-10
Disclosed are a method for preparing a dabigatran etexilate intermediate, and an intermediate compound. The method for preparing a dabigatran etexilate intermediate 4 comprises: reacting a compound 3 with a C1-C3 alkyl alcohol solution of methylamine in an organic solvent, wherein, X = chlorine, bromine, or iodine. Also disclosed are an intermediate compound 3 and a preparation method thereof. The method for preparing a dabigatran etexilate intermediate of the present invention has the advantages of simple process, easy operation, high yield, and easy purification, thus being suitable for industrial production.
Method for preparing dabigatran etexilate intermediate, and intermediate compound
申请人:SHANGHAI INSTITUTE OF PHARMACEUTICAL INDUSTRY
公开号:US10112901B2
公开(公告)日:2018-10-30
Disclosed are a method for preparing a dabigatran etexilate intermediate, and an intermediate compound. The method for preparing a dabigatran etexilate intermediate 4 comprises: reacting a compound 3 with a C1-C3 alkyl alcohol solution of methylamine in an organic solvent, wherein, X=chlorine, bromine, or iodine. Also disclosed are an intermediate compound 3 and a preparation method thereof. The method for preparing a dabigatran etexilate intermediate of the present invention has the advantages of simple process, easy operation, high yield, and easy purification, thus being suitable for industrial production.