Pyrimidine I-oxides with cyanamide afforded 2-ureidopyrinlidines as the result of the nucleophilic substitution of hydrogen, whereas the formation of similar 2-trichloroacetyl-aminopyrimidines occurs as dipolar 1,3-cycloaddition of the same oxides to trichloroacetonitrile under much more drastic conditions and in lower yields.
Pyrimidine I-oxides with cyanamide afforded 2-ureidopyrinlidines as the result of the nucleophilic substitution of hydrogen, whereas the formation of similar 2-trichloroacetyl-aminopyrimidines occurs as dipolar 1,3-cycloaddition of the same oxides to trichloroacetonitrile under much more drastic conditions and in lower yields.
作者:A. M. Prokhorov、D. N. Kozhevnikov、V. L. Rusinov、O. N. Chupakhin
DOI:10.1023/a:1024729912415
日期:——
Pyrimidine I-oxides with cyanamide afforded 2-ureidopyrinlidines as the result of the nucleophilic substitution of hydrogen, whereas the formation of similar 2-trichloroacetyl-aminopyrimidines occurs as dipolar 1,3-cycloaddition of the same oxides to trichloroacetonitrile under much more drastic conditions and in lower yields.