Citric Acid → n-Propanesulfonic acid [6-[2-(5-methylsulfanyl-pyrimidin-2-yloxy)-ethoxy]-5-(2-methoxy-phenoxy)-[2,2']bipyrimidinyl-4-yl]-amide

Participants

Reaction Conditions

Reaction Steps

n-Propanesulfonic acid [6-(2-hydroxy-ethoxy)-5-(2-methoxy-phenoxy)-[2,2′]bipyrimidinyl-4-yl]-amide (92 mg) was dissolved in THF (6 ml). Sodium hydride (40 mg) and 2-chloro-5-methylsulfanyl-pyrimidine (71 mg) were added and the mixture was heated to 75° C. for 6 h, then poured onto water, acidified with solid citric acid and the precipitate was filtered off. The crude material was purified by crystallization from methanol to give n-propanesulfonic acid [6-[2-(5-methylsulfanyl-pyrimidin-2-yloxy)-ethoxy]-5-(2-methoxy-phenoxy)-[2,2′]bipyrimidinyl-4-yl]-amide (61 mg) as a white powder. LC-MS: tR: 4.37, [M+H]+: 586.19.

Provenance & Evidence