作者:A. A. El-Khamry、S. A. Shiba、A. A. Shalaby、A. A. Abd alaha
DOI:10.1002/jhet.5570430509
日期:2006.9
3-oxazin-2-yl)-3-(4-methoxyphenyl) acrylonitrile (1) has been used as a starting material for preparation of the hitherto unknown pyrazoloquinazolinone and quinazolinone derivatives. Under different conditions the benzoxazinone (1) was reacted with hydrazine hydrate to provide the pyrazolocarbonitrile derivative (2) and the azine derivative (3) and/or the pyrazoloquinazoline derivative (4). When (4) was conducted
苯并恶嗪酮衍生物的2-(6,8-二溴-4-氧代-4- ħ -苯并[ d ] -1,3-恶嗪-2-基)-3-(4-甲氧基苯基)丙烯腈(1)已被用来作为制备迄今未知的吡唑并喹唑啉酮和喹唑啉酮衍生物的原料。在不同条件下,使苯并恶嗪酮(1)与水合肼反应以提供吡唑碳腈衍生物(2)和嗪衍生物(3)和/或吡唑并喹唑啉衍生物(4)。当进行(4)与EAA(乙酰乙酸乙酯)或Ac 2反应时分别形成O / AcOH(乙酸酐/乙酸)混合物或邻苯二甲酸酐/乙酸混合物,吡唑并喹唑啉腈(5),吡唑并喹唑啉乙酸(6)或吡唑并喹唑啉酮衍生物(7)。当(1)与苯肼反应时,获得喹唑啉酮衍生物(8)和衍生物(9)的混合物。还发现苯并恶嗪酮衍生物(1)在乙醇中或没有溶剂的情况下也与苄胺反应,分别得到喹唑啉酮衍生物(10)或喹唑啉二酮(11)。(1的融合)与乙酸铵反应生成喹唑啉酮(12),将其甲基化得到(13)并硫代化成硫氧基喹唑啉衍