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2-Phenylphthalazin-2-ium-4-olate

Cyano-6-ethoxycarbonyl-5-methyl-1 -phenylpyridazin-1 -ium-3-olate (149) with formaldehyde and malononitrile gave 5-amino-6-cyano-l-ethoxycarbonyl-2-phenylphthalazin-2-ium-4-olate (150) (reactants, trace piperidine, Me2NCHO, reflux, 6 h %). °... [Pg.134]

In contrast, 2-phenylphthalazin-2-ium-4-olate (227) with dimethyl acetylenedi-carboxylate in refluxing xylene gave dimethyl 1-0x0-10-phenyl-1,5-dihydro-2,5-imino-2H-benzazepine-3,4-dicarboxylate (228) (xylene, reflux, 12 h 80%) but in refluxing chloroform gave the isomeric dimethyl l-oxo-2-phenyl-1,2-dihydro-2,3-benzodiazocine-4,5-dicarboxylate (229) thermolysis of either product gave a third isomer, dimethyl 4-oxo-l,3a,4,8b-tetrahydroin-deno[l,2-fo]pyrazol-3,3a-dicarboxylate (230) (neat substrate, 180-190°C, 3-5 h >95%). ... [Pg.274]

Amino-8-bromo-6-cyano- 1 -ethoxycarbonyl-2-phenylphthalazin-2-ium-4-olate 100, IR, NMR 520... [Pg.376]

See other pages where 2-Phenylphthalazin-2-ium-4-olate is mentioned: [Pg.155]    [Pg.155]    [Pg.274]    [Pg.376]    [Pg.380]    [Pg.387]    [Pg.389]    [Pg.155]    [Pg.155]    [Pg.274]    [Pg.376]    [Pg.380]    [Pg.387]    [Pg.389]   
See also in sourсe #XX -- [ Pg.155 ]



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