反应详情

In analogy to Example 11A, ethyl 4-oxo-3,4,5,7-tetrahydro-6H-pyrrolo[3′,4′:4,5]thieno[2,3-d]pyrimidine-6-carboxylate from Example 20A (1.70 g, 6.41 mmol) was reacted with phosphoryl chloride to yield 1.23 g (67%) of the title compound.