Tetrahedron p. 5397 - 5402 (1986)
Update date:2022-07-30
Topics:
Alemagna, A.
Baldoli, C.
Licandro, E.
Maiorana, S.
Papagni, A.
The coupling of diazonium salts from isatic acids with alkoxycarbonylmethylenephosphoranes leads directly to 3-oxo-indazolin-2-yl-(alkoxycarbonyl)methylenetriphenylphosphoranes, while coupling with methyl 2-chloroacetacetate gives 2-<2-(methoxycarbonyl-chloromethyliden)hydrazino>phenyl-glyoxylic acid.
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