SYNTHESIS OF 2-SUBSTITUTED-4H-PYRIDO[2,3-h]BENZOXAZIN-4-ONES AND 2-SUBSTITUTED PYRIDO[2,3-h]-QUINAZOLIN-4(3H)ONES
作者:T. Aruna Kumari、P. Jayaprasad Rao
DOI:10.1081/scc-120005995
日期:2002.1
ABSTRACT The reaction of 2-substituted-4H-pyrido[2,3-h]benzoxazin-4-ones (1) with hydrazine hydrate resulted in 2-substituted-3-aminopyrido[2,3-h]quinazolin-4(3H)ones (2) and not in the corresponding 3. The Schiff bases (4) of 2 on pyrolysis led to 2-substituted pyrido[2,3-h]quinazolin-4(3H)ones (5).
摘要 2-取代-4H-吡啶并[2,3-h]苯并恶嗪-4-酮(1)与水合肼反应生成2-取代-3-氨基吡啶并[2,3-h]喹唑啉-4(3H) )ones (2) 而不是在相应的 3 中。 热解时 2 的席夫碱 (4) 导致 2-取代的吡啶并 [2,3-h] 喹唑啉-4(3H) 酮 (5)。