A METHOD OF PREPARATION OF 2-ETHOXY -3-((2'-(5-OXO-2,5-DIHYDRO-1,2,4-OXADIAZOL- 3-YL)BIPHENYL-4-YL)METHYL)-3H-BENZODIMIDAZOLE-7-CARBOXYLIC ACID AND INTERMEDIATE THEREOF

摘要

The present invention is in relation to a preparation of 2-Ethoxy-3-((2"-(5-oxo-2,5-dihydro-l,2,4-oxadiazol-3-yl)biphenyl-4-yl) Methyl)-3H-benzo[d]imidazole-7-carboxylic acid and intermediate thereof. The method is eco-friendly and economically viable for large scale preparation.