- A simple and efficient route to cycloalkene-fused 2,3- dihydrophthalazine-1(4H),4-diones
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A convenient method for the preparation of cycloalkene-annelated 2,3- dihydrophthalazine-1(4H),4-diones, starting from a pyridazino [4,5- d]pyridazine diazadiene is detailed.
- Haider, Norbert,Mavrokordatou, Emilia,Steinwender, Andreas
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- A 'push-pull' tropylium-fused aminoporphyrazine
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Crossover Linstead macrocyclization of cycloheptatrienylmaleonitrile and (dimethylamino)-maleonitrile gave access to an unsymmetrical (A3B) porphyrazine bearing six peripheral amino substituents and a fused cycloheptatrienyl ring. Subsequent hy
- Ruggiero, Andrea,Fuchter, Matthew J.,Kokas, Okanya J.,Negru, Mihaela,White, Andrew J.P.,Haycock, Peter R.,Hoffman, Brian M.,Barrett, Anthony G.M.
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supporting information; experimental part
p. 9690 - 9693
(2010/02/27)
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- PYRIDAZINES XXIV. APPLICATION OF RADICALIC ETHOXYCARBONYLATION TO THE SYNTHESIS OF PYRIDAZINE MONO- AND POLYCARBOXYLIC ACID ESTERS
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Reactivity of pyridazines 1, 2, 3, 16 towards ethoxycarbonylradical (generated by redox decomposition of oxyhydroperoxyde of ethylpyruvate) was studied.Application of this type of homolytic substitution for synthesis of hitherto not accessible pyridazine carboxylic acid esters 6, 8, 9, 12, 13, 14, 15, 17 is demonstrated.In addition improved synthesis of diethyl 4,5-pyridazinedicarboxylate (5) is proposed.
- Heinisch, Gottfried,Loetsch, Gerhard
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p. 1199 - 1206
(2007/10/02)
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