Process for the preparation of anagrelide and analogues thereof

摘要

The present invention relates to a novel process for producing anagrelide, 6,7-dichloro-1,5-dihydroimidazo[2,1-b]quinazolin 2(3H)-one, or certain analogues thereof. The process of the invention also provides improved processes for producing key intermediates required for the synthesis of anagrelide or certain analogues thereof.