申请人:ACTELION PHARMACEUTICALS LTD
公开号:US20160368882A1
公开(公告)日:2016-12-22
The invention relates to a process for manufacturing the compound of formula I
wherein R is H, (C
1
-C
6
)alkyl or benzyl, or a salt thereof, said process comprising the reaction of the compound of formula I-1
wherein X is Br, Cl or F, or a salt thereof, with the compound of formula I-2
wherein R is H, (C
1
-C
6
)alkyl or benzyl, or a salt thereof, in the presence of a base, and, when X is Br or Cl, in the presence of tetra-n-butyl ammonium fluoride hydrate or cesium fluoride. The invention further relates to the compound of formula I-1 and uses thereof.