SYNTHESIS OF HETEROCYCLES ON THE BASIS OF ARYLATION PRODUCTS OF UNSATURATED COMPOUNDS. 11.<sup>1</sup>5-R-BENZYL-2- IMINOSELENAZOLIDIN-4-ONES FROM ETHYL 3-ARYL-2-BROMOPROPANOATES
作者:Mykola D. Obushak、Vasyl S. Matiychuk、Volodymyr M. Tsyalkovsky、Roman M. Voloshchuk
DOI:10.1080/10426500490257096
日期:2004.1
3-aryl-2-bromopropanoates 2a–p were prepared by reaction of ethyl acrylate with arenediazonium bromides 1a–p in the presence of CuBr (Meerwein arylation). These compounds react with selenourea to form 5-R-benzyl-2-iminoselenazolidin-4-ones 4a–p. Compounds 4a–p hydrolyze into the corresponding selenazolidin-2,4-diones.
3-芳基-2-溴丙酸乙酯2a-p是通过丙烯酸乙酯与溴化芳烃重氮铵1a-p在CuBr(Meerwein芳基化)存在下反应制备的。这些化合物与硒脲反应形成 5-R-benzyl-2-iminoselenazolidin-4-ones 4a–p。化合物 4a-p 水解成相应的硒唑啉-2,4-二酮。