17629-26-4Relevant articles and documents
Synthesis of 1-ethylpyrazole-4-carbaldehydes, 1,1′-methylenebis(3,5- dimethylpyrazole-4-carbaldehyde), and Schiff bases derived therefrom
Potapov,Khlebnikov,Ogorodnikov
, p. 550 - 554 (2006)
New pyrazole-containing aldehydes, 1-ethylpyrazole-4-carbaldehyde, 1-ethyl-3,5-dimethylpyrazole-4-carbaldehyde, and 1,1′-methylenebis(3,5- dimethylpyrazole-4-carbaldehyde), were synthesized by the Vilsmeier reaction. Their reactions with primary amines (a
Synthesis of silylated β-enaminones and applications to the synthesis of silyl heterocycles
Calvo, Luis A.,González-Nogal, Ana M.,González-Ortega, Alfonso,Sa?udo
, p. 8981 - 8984 (2007/10/03)
Silyl β-enaminones have been synthesized by reductive cleavage of silylisoxazoles. These versatile synthons bearing the silyl group in different positions of the enamino ketonic system are of great interest in the construction of a variety of penta- and hexaheterocycles, which, in general, retain the silyl group attached at the ring or in a side chain.
Influence of N-substitution in the FVT of pyrazoles
Perez, Jorge D.,Yranzo, Gloria I.,Phagouape, Leonardo M.
, p. 129 - 132 (2007/10/02)
Flash vacuum thermolysis of 1-ethyl (3), 3,5-dimethyl-1-ethyl (4), 1-n-buthyl (5), 1-tert-butyl (6), 3,5-dimethyl-1-phenyl (7) and 1-phenyl-pyrazole (8) was studied.In the N-alkyl derivatives, pyrazole elimination and olefin formation was found.In contrast, phenylderivatives afforded isomerization and nitrogen extrusion.Kinetic parameters for compound 4 are described and a general mechanism including the N-H derivatives is discussed.