| abstract |
The present invention provides a novel process for preparingnbenzo(f)quinolinones of the formula In nwherein R 1 represents: n2-nitrophenyl, 4-nitrophenyl, 2-cyanophenyl, 4-cyanophenyl,n2-nitronaphthyl, 4-nitronaphthyl, 2-cyanonaphthyl, 4-cyanonaphthyl,n2-quinolinyl, 4-quinolinyl, 7-quinolinyl, 1-isoquinolinyl,n3-isoquinolinyl, 8-isoquinolinyl, 2-quinoxalinyl, 2-benzothiazolyl,n3-1H-indazolyl, 2-benzoxazolyl, 3-1,2-benzoisothiazolyl, 2-pyridinyl,n4-pyridinyl, 2-pyrazinyl, 2-naphtho[2,3-d]thiazolyl,n2-naphtho[1,2-d]thiazolyl, 9-anthryl, 2-thiazolyl, 2-benzimidazolyl,n1-benz[g]isoquinolinyl, 8-benz[g]isoquinolinyl, 5-1H-tetrazolyl,n2-quinazolinyl, 2-thiazolo[4,5-b]pyridinyl,n4-10H-pyridazino[3,2-b]-2-quinazolinyl, 2-1,4-benzodioxinyl, 2-triazine,n2-benzoxazine, 4-benzoxazine, 2-purine or 8-purine; nwherein the above R 1 groups are unsubstituted or substituted;nand the intermediates of the formulae A,B,C and D. |