205813-64-5Relevant academic research and scientific papers
Rare earth triflate-catalyzed addition reactions of acylhydrazones with silyl enolates. A facile synthesis of pyrazolone derivatives
Oyamada, Hidekazu,Kobayashi, Shu
, p. 249 - 250 (1998)
In the presence of a catalytic amount of a rare earth triflate, benzoylhydrazones reacted with silyl enolates to afford the corresponding β-N′-benzoylhydrazino esters in high yields. The hydrazino esters thus obtained were readily converted to pyrazolone derivatives by treatment with a base. A three-component reaction between an aldehyde, an acylhydrazine, and a silyl enolate was also performed successfully.
Mannich type reactions of acylhydrazones with silyl enolates for the synthesis of β-amino ester, β-amino ketone, β-lactam, pyrazolidinone, and pyrazolone derivatives
Okitsu, Osamu,Oyamada, Hidekazu,Furuta, Takayuki,Kobayashi, Shu
, p. 1143 - 1162 (2007/10/03)
In the presence of a catalytic amount of a rare earth triflate, acylhydrazones reacted with silyl enolates to afford the corresponding β-N'- acylhydrazino esters in high yields. A three-component reaction of an aldehyde, an acylhydrazine, and a silyl enolate was also performed successfully. The hydrazino esters thus obtained were readily converted to β-amino ester, β-amino ketone, β-lactam, pyrazolidinone, and pyrazolinone derivatives.
