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Cycloaddition Reactions of Phosphorylated 1,2-Diaza-1,3-butadienes with Olefins: Regioselective Synthesis of Pyridazine Derivatives

✍ Scribed by Francisco Palacios; Domitila Aparicio; Yago López; Jesús M. de los Santos; Concepción Alonso

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
117 KB
Volume
2005
Category
Article
ISSN
1434-193X

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## Abstract The reaction of 1,2‐diaza‐1,3‐butadienes with dibenzyl diisopropylphosphoramidite, methyl tetraisopropylphosphorodiamidite or tris(dimethylamino)phosphane under solvent‐free conditions gave stable α‐phosphoranylidene‐hydrazones that, in turn, were transformed into the corresponding 5‐ox