180576-46-9

Basic information

• Product Name: methyl 2-(6-(4-tert-butylphenylsulfonamido)-5-(2-methoxyphenoxy)-2,2'-bipyrimidin-4-yloxy)acetate
• Synonyms: methyl 2-(6-(4-tert-butylphenylsulfonamido)-5-(2-methoxyphenoxy)-2,2'-bipyrimidin-4-yloxy)acetate
• CAS NO: 180576-46-9
• Molecular Weight: 579.634
• Mol File: 180576-46-9.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: methyl 2-(6-(4-tert-butylphenylsulfonamido)-5-(2-methoxyphenoxy)-2,2'-bipyrimidin-4-yloxy)acetate(CAS DataBase Reference)
• NIST Chemistry Reference: methyl 2-(6-(4-tert-butylphenylsulfonamido)-5-(2-methoxyphenoxy)-2,2'-bipyrimidin-4-yloxy)acetate(180576-46-9)
• EPA Substance Registry System: methyl 2-(6-(4-tert-butylphenylsulfonamido)-5-(2-methoxyphenoxy)-2,2'-bipyrimidin-4-yloxy)acetate(180576-46-9)

Safety Data

• Hazardous Substances Data: 180576-46-9(Hazardous Substances Data)

Upstream product

• 150727-06-3 4-tert-butyl-N-(6-chloro-5-(2-methoxyphenoxy)2,2'-bipyrimidin-4-yl)benzene sulfonamide 
• 174227-14-6 p-tert-butyl-N-[6-hydroxy-5-(2-methoxyphenoxy)-2-(2-pyrimidinyl)-4-pyrimidinyl]benzenesulfonamide 
• 96-34-4 methyl chloroacetate 

Downstream Products

• 147536-97-8 bosentan 

Relevant articles and documents

New approaches to endothelin receptor antagonist-bosentan

An improved and efficient synthetic process developed for an endothelin receptor antagonist, bosentan monohydrate by condensing a key intermediate 4-tert-butyl-N-(6-hydroxy-5-(2-methoxyphenoxy)-2,2'-bipyrimidine-4-yl) benezenesulfonamide 5 with commercially cheaper chloro acetonitrile and α-halo esters. This synthetic approach efficiently provides highly pure bosentan without formation of the major impurity 2 (dimer) and less than 0.15% of Nalkylated impurity 3 and pyrimidinone impurity 5 in the final product. In the present process upon purification of bosentan monohydrate gave overall yield of 62-65%.