Tetrahedron p. 9511 - 9518 (1995)
Update date:2022-08-05
Topics:
Hoffmann, Michael G.
The arylsulfonylvinamidinium salts 1 reacted with hydrazine in refluxing ethanol to give rise to 4-arylsulfonylpyrazoles 2 in reasonable yield. Regioselective lithiation of N-methylpyrazoles 3 with LDA followed by treatment with various electrophiles affo
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