N-Substituted 1,4,5,6-tetrahydropyridazines ((3) under bar) can be prepared in a one pot procedure from a hydrazine (1) under bar) and 2,5-dimethoxytetrahydrofuran ((2) under bar) using NaBH4 in aqueous-THF acidic medium in fair yields. Variable amounts of two side products are also formed: hexahydropyridazines (5) under bar, likely produced by a route other than the direct reduction of (3) under bar and 1-aminopyrrolidines (4) under bar. A direct reduction-N-reductive ethylation of (3) under bar could be achieved in AcOH with NaBH4.

1-Substituted 1,4,5,6-Tetrahydropyridazines and 1-(N-Substituted)aminopyrrolidines from Hydrazines and 2,5-Dimethoxytetrahydrofuran

VERARDO, Giancarlo;
1997-01-01

Abstract

N-Substituted 1,4,5,6-tetrahydropyridazines ((3) under bar) can be prepared in a one pot procedure from a hydrazine (1) under bar) and 2,5-dimethoxytetrahydrofuran ((2) under bar) using NaBH4 in aqueous-THF acidic medium in fair yields. Variable amounts of two side products are also formed: hexahydropyridazines (5) under bar, likely produced by a route other than the direct reduction of (3) under bar and 1-aminopyrrolidines (4) under bar. A direct reduction-N-reductive ethylation of (3) under bar could be achieved in AcOH with NaBH4.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11390/673683
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