申请人:Sandoz Ltd.
公开号:US04316042A1
公开(公告)日:1982-02-16
Compounds of the formula II: ##STR1## are produced by reacting a compound of the formula III ##STR2## with a compound of the formula IV: ##STR3## wherein R.sub.1 is hydrogen, alkyl of 1 to 5 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, alkyl of 1 to 4 carbon atoms substituted by cycloalkyl of 3 to 6 carbon atoms, polyhaloalkyl of 1 to 5 carbon atoms, allyl, propargyl, enzyl or aryl, R.sub.2 is hydrogen, halogen, alkyl or alkoxy, each of 1 to 4 carbon atoms, trifluoromethyl, nitro, alkylamino or dialkylamino, wherein the alkyl groups have 1 to 4 carbon atoms, or aryl, R.sub.3 is hydrogen, halogen, alkyl or alkoxy, each of 1 to 4 carbon atoms, or aryl, R.sub.4 is hydrogen, nitro, halogen, alkyl or alkoxy each of 1 to 4 carbon atoms or aryl, R.sub.5 is hydrogen, halogen, alkyl, alkylthio or alkoxy each of 1 to 4 carbon atoms, nitro, trifluoromethyl or aryl, R.sub.6 is hydrogen, halogen, alkyl of 1 to 4 carbon atoms, benzyl or aryl, and R is alkyl of 1 to 4 carbon atoms. Compounds II can be dehydrogenated and used as intermediates for 4-phenyl-quinazolin-2(1H)-ones.
公式II的化合物:##STR1##是通过将公式III的化合物##STR2##与公式IV的化合物反应而产生的:##STR3##其中R.sub.1为氢,1至5个碳原子的烷基,3至6个碳原子的环烷基,1至4个碳原子的烷基被3至6个碳原子的环烷基取代,1至5个碳原子的多卤代烷基,烯丙基,丙炔基,苄基或芳基,R.sub.2为氢,卤素,1至4个碳原子的烷基或烷氧基,三氟甲基,硝基,1至4个碳原子的烷基氨基或二烷基氨基,其中烷基基团具有1至4个碳原子,或芳基,R.sub.3为氢,卤素,1至4个碳原子的烷基或烷氧基,或芳基,R.sub.4为氢,硝基,卤素,1至4个碳原子的烷基或烷氧基或芳基,R.sub.5为氢,卤素,1至4个碳原子的烷基,硫代烷基或烷氧基,硝基,三氟甲基或芳基,R.sub.6为氢,卤素,1至4个碳原子的烷基,苄基或芳基,R为1至4个碳原子的烷基。化合物II可以脱氢并用作4-苯基喹唑啉-2(1H)-酮的中间体。