Z 99 [1,5]Sigmatropic shift of hydrogen in amination of 3-pyrrolidino-1,2,4- triazine 4-oxide [Text] / O. N. Chupakhin, V. N. Kozhevnikov, D. N. Kozhevnikov, V. L. Rusinov // Tetrahedron Letters. - 1999. - Vol. 40, № 33. - P6099-6100. - Bibliogr. : p. 6100 (11 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): AMINATION -- DERIVATIVE -- PYRROLIDINE DERIVATIVE -- TRIAZINE DERIVATIVE Аннотация: The reaction of 3-pyrrolidino-1,2,4-triazine 4-oxide with ammonia leads to the product of tele-substitution of pyrrolidine - 5-amino-1,2,4-triazine 4-oxide. Sigmatropic shift of hydrogen postulated for such reactions has been proved by isolation of key intermediates. |