PROCESS FOR PRODUCING PURINONE DERIVATIVE

摘要

The present invention makes it possible to avoid Ullmann condensation, which decreases in yield in association with an increase in production scale, unlike known production processes by changing a starting substance, and to safely and stably provide 6-amino-9-[(3R)-1-(2-butynoyl)-3-pyrrolidinyl]-7-(4-pheonoxyphenyl)-7,9-dihydro-8H-purin-8-one with high reaction yield.