Studies on fused pyrimidine derivatives. Part 13. Thermal ene reaction of 6-(alk-2-enylamino)-5-[(substituted imino)methyl]-1,3-dimethylpyrimidine-2,4(1H,3H)-diones leading to pyrimido[4,5-b]azepines
作者:Tomonori Inazumi、Etsuko Harada、Takashi Mizukoshi、Yoshiaki Kuroki、Akikazu Kakehi、Michihiko Noguchi
DOI:10.1039/p19940000565
日期:——
3-dimethyl-5-[(substituted imino)methyl]pyrimidine-2,4(1H,3H)-diones, obtained from 6-(alk-2-enylamino)-5-formyl-1,3-dimethylpyrimidine-2,4(1H,3H)-diones 1 and primary amines, participate in the intramolecular ene reaction (Type III) leading to pyrimido[4,5-b]azepine derivatives.
由6-(烷-2-烯基氨基)获得的6-(烷-2-烯基氨基)-1,3-二甲基-5-[(取代的亚氨基)甲基]嘧啶-2,4(1 H,3 H)-二酮)-5-甲酰基-1,3-二甲基嘧啶-2,4(1 H,3 H)-二酮1和伯胺参与分子内烯反应(III型),导致嘧啶基[4,5- b ]氮杂衍生品。