PROCESS FOR THE PRODUCTION OF QUINAZOLINES

摘要

The invention provides a process for the production of a compound of formula (A), or a pharmaceutically acceptable salt or solvate thereof, wherein R<1> represents C1-4 alkoxy optionally substituted by one or more fluorine atoms; R<2> represents H or C1-6 alkoxy optionally substituted by one or more fluorine atoms; R<3> represents a 5- or 6-membered heterocyclic ring which is optionally substituted; R<4> is a 4-, 5-, 6- or 7-membered heterocyclic ring which is optionally fused to a benzene ring or a 5- or 6-membered heterocyclic ring, the ring system as a whole being optionally substituted; the process comprising condensing a compound of formula (B), wherein R<1> to R<3> are as defined above; with a compound of formula (C), wherein R<5> and R<6> taken together with the N atom to which they are attached represent a 4-, 5-, 6-, or 7-membered N-containing heterocyclic ring, the ring being optionally fused to a benzene ring or a 5- or 6-membered heterocyclic ring, the ring system as a whole being optionally substituted.