Hydride transfer reactions of 5-(2-alkohybenzylidene) barbituric acids: Synthesis of 2,4,6-trioxoperhydropyrimidine-5-spiro-3′-chromanes
作者:Konstantin A. Krasnov、Pavel V. Dorovatovskii、Yan V. Zubavichus、Tatiana V. Timofeeva、Victor N. Khrustalev
DOI:10.1016/j.tet.2016.12.045
日期:2017.2
thermal cyclization of 5-(2-phenoxymethylphenyl-methylene)barbituricacid and its derivatives affords 2,4,6-trioxoperhydropyrimidine-5-spiro-3′-chromanes. The reactions require no catalysts and proceed at temperatures from 118 to 240 °C depending on the substrate activity. These cyclization reactions are analogous to T-reactions of tertiary amines involving the hydride transfer.