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
通过新型的三组分缩合反应,从金属硒,原甲酸三乙酯和伯胺或仲胺获得硒代脲。该反应在惰性气体下于180–190°C下以无溶剂的一锅法进行,反应时间为8小时。测试反应中的哌啶,异丙胺,N,N'-二甲基丙二胺(Me-NH-CH 2 -CH 2 -CH 2 -CH 2 -NH-Me)和N,N'-二取代的乙二胺(R-NH-CH 2 -CH 2 -NH-R,R = Me,Et,i Pr,t Bu,Ph)。