A novel and convenient strategy for the synthesis of phthalazines from an aryne precursor

作者:Abed Hassen Bel; Bande Omprakash; Mammoliti Oscar; Van Lommen Guy; Herdewijn Piet*
来源:Tetrahedron Letters, 2013, 54(51): 7056-7058.
DOI:10.1016/j.tetlet.2013.10.075

摘要

A novel three-step entry toward phthalazine derivatives has been elaborated. A strategy based on a sequential acyl-alkylation/diazo transfer reaction/Diaza-Wittig reaction led to the desired analogues in moderate to good yields from an aryne precursor. Various aryl groups were introduced on the annulated pyridazine, moreover the presence of an ester group allows further modifications.

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