Synthesis and reactivity of subvalent compounds. Part 13: Reaction of triethyl orthoformate with amines and selenium—a convenient one-step three-component synthesis for selenoureas
作者:Yuehui Zhou、Michael K. Denk
DOI:10.1016/s0040-4039(02)02818-6
日期:2003.2
Selenoureas are obtained by a novel three-component condensation reaction from metallic selenium, triethyl orthoformate and a primary or secondary amine. The reaction is carried out as solvent-free one pot-procedure at 180–190°C under inert gas with a reaction time of 8 h. The reaction was tested for piperidine, isopropylamine, N,N′-dimethylpropylenediamine (Me-NH-CH2-CH2-CH2-NH-Me) and N,N′-disubstituted
Novel 1,3-selenazolin derivatives and process for preparing the same
申请人:GIFU UNIVERSITY
公开号:US20030158239A1
公开(公告)日:2003-08-21
A process for preparing novel 1,3-selanazolin derivatives represented by chemical formula 1 at high yield. This process includes a step of reacting a selenourea and an &agr;-haloacyl halide in a solvent and in the presence of a catalyst.
1
1,3-selenazolin derivatives and process for preparing the same
申请人:Gifu University
公开号:US07176164B2
公开(公告)日:2007-02-13
A process for preparing novel 1,3-selanazolin derivatives represented by chemical formula 1 at high yield. This process includes a step of reacting a selenourea and an α-haloacyl halide in a solvent and in the presence of a catalyst
Lithium aluminum hydride-based selenating reagent and preparation methods using same
申请人:Gifu University
公开号:US07033564B2
公开(公告)日:2006-04-25
A selenating reagent obtained by reacting lithium aluminum hydride with selenium powder in an organic solvent. In addition, a method for preparing a selenating reagent includes reacting lithium aluminum hydride with selenium powder in an organic solvent. Also, a method of preparing a selenium-containing product includes reacting the selenating reagent, prepared as stated, with at least one second compound which may be acyl chloride.