Patent ID: 9156847
Filing Date: 2015-10-13
Classification: C07D

Abstract:
1. A process for the preparation of a compound of formula (IVA), or a salt, or solvate thereof; wherein the process comprises conversion of a compound of formula (I): or a salt, or solvate thereof; to the compound of formula (IVA), or a salt, or solvate thereof; wherein X R R R and wherein the conversion comprises either a reaction of the compound of formula (I), or a salt, or solvate thereof; wherein R (i) formamide (HCONH (ii) formamidine or a salt thereof; (iii) alkyl formimidate, or a salt thereof; or (iv) ethylorthoformate followed by ammonium acetate; or a) a reaction of the compound of formula (I), or a salt, or solvate thereof; wherein R