3- Phenyl-5,6,7,8-tetrahydro-5-cinnolinone

Phenacyl-l,3-cyclohexanedione (106) gave 3-phenyl-4,6,7,8-tetrahydro-5(lfl)-cinnolinone (107 unisolated) and thence 3-phenyl-5,6,7,8-tetrahydro-5-cin-nolinone (108) by oxidation (H2NNH2, EtOH, 20°C, 30 min then dichloro-... [Pg.16]

Carboxymethyl-5-phenylcyclohex-5-enone (109) gave 7-phenyl-4,4a,5,6-tet-rahydro-3(2//)-cinnolmone (110, R = H) (neat H2NNH2-H20, reflux, 4h 92%) or 2-methyl-7-phenyl-4,4a,5,6-tetrahydro-3(27/)-cinnolinone (110, R = Me) (H2NNHMe, EtOH, reflux, 16 h 65%) analogs likewise. ... [Pg.17]

Tetrahydro-l-benzazocine-2,6(l/i)-dione (168) gave 3-(2-carboxyethyl)-4(l//)-cinnolinone (169) (MeOCHzCHzOMe, trace HjO, BuONO, HCl gasi, 25 C, 5 min then stirred, 25°C, 12 h then suspension of crude diazonium intermediate, lOO C, 5 min 61%) a dozen analogs, substimted in the phenyl... [Pg.25]

C0CH2C1), 7,7-dimethyl-3-phenyl-4,6,7,8-tetrahydro-5( l//)-cinnolinone tautomer), and 2-ethoxycarbonyImethy 1-2,3-dihydro-4(l//)-cinnoli-also 6-lluoro- and 7-methyl-4-oxo-l,4-dihydro-3-cinnolinecarboxylic... [Pg.60]

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