... BulL} 31(8)2540vv2551(1983) Synthesis of Imidaz0[l,5-a]pyrimidines1) NOBUYA KATAGIRI, SHUGO ATSUUMI, and TETSUZO KAT0* Pharmaceutical ... These chemical reactions also support the rearrangement of 7 to 8. POC13 [ (R1:H,R2:CHMez) | C1 C] R2 4 5 6 /\ 3a—i ...