Patent ID: 7700611

Claim:
A process for preparing a compound of formula I, or a salt or polymorph thereof, wherein the salt is the mesylate or fumarate salt and the polymorph is pure Form A or Form C, comprising the step of coupling a compound of formula II with a compound of formula III, or a salt thereof, in the presence of SOCl 2 and dimethylacetamide, wherein the mesylate salt of Compound I has an x-ray powder diffraction pattern obtained using Cu radiation containing an angle 2 theta value of 19.90°; wherein the fumarate salt of Compound I has an x-ray powder diffraction pattern obtained using Cu radiation containing an angle 2 theta value of 9.59°; wherein pure Form A of Compound I has an x-ray powder diffraction pattern obtained using Cu radiation containing an angle 2 theta value of 22.42°; and wherein Form C of Compound I has an x-ray powder diffraction pattern obtained using Cu radiation containing an angle 2 theta value of 27.0-28.0°.