Chemical and Pharmaceutical Bulletin p. 3037 - 3040 (1991)
Update date:2022-08-05
Topics:
Tanji
Kato
Higashino
The amino group at the 5-position on the 3H-1,2,3-triazolo[4,5-d]pyrimidine (triazolopyrimidine) ring was converted into a halogen atom by treatment with isopentyl nitrite in halomethanes in satisfactory yields. The 5-halotriazolopyrimidines not having a
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(1991)
