Rearrangement of N-(alkylamino)azoles in acid media: a new entry to C-amino-N-substituted azoles
摘要:
A ring-opening/ring-closure mechanism for the thermal rearrangement of 1-(alkylamino)pyrazoles into 5-amino-1-alkylpyrazoles in acid medium has been established. 1-(Benzylamino)pyrazoles show a different reactivity, affording bis(5-amino-1-benzyl-4-pyrazolyl)phenylmethanes. The reaction was extended to 1-(alkylamino)indazoles but failed in the case of 1-(alkylamino)-1,2,4-triazoles.
Rearrangement of N-(alkylamino)azoles in acid media: a new entry to C-amino-N-substituted azoles
作者:Loreto Salazar、Modesta Espada、Carmen Avendano、Rosa Maria Claramunt、Dionisia Sanz、Jose Elguero
DOI:10.1021/jo00031a042
日期:1992.2
A ring-opening/ring-closure mechanism for the thermal rearrangement of 1-(alkylamino)pyrazoles into 5-amino-1-alkylpyrazoles in acid medium has been established. 1-(Benzylamino)pyrazoles show a different reactivity, affording bis(5-amino-1-benzyl-4-pyrazolyl)phenylmethanes. The reaction was extended to 1-(alkylamino)indazoles but failed in the case of 1-(alkylamino)-1,2,4-triazoles.
Synthesis and Investigation of the Conformational Mobility of Certain (N-Benzyl-N-Nitrosoamino)azoles
作者:O. V. Dyablo、A. V. Mikhailus、A. F. Pozharskii、D. S. Trishkin