ChemInform Abstract: A Convenient Synthesis of Alkyl- and Dialkylphenanthren-9-ylamines.
Abstract
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ChemInform Abstract
A general and convenient synthesis of the title dialkylphenanthrylamines (VI) and (VIII) is presented, involving the radical cyclization of E-diaryleneamines, generated by Horner reaction of phosphane oxides (IVa)—(IVd) or phosphonates like (IVe) with aromatic aldehydes (V). Reductive N-debenzylation of the obtained dialkylphenanthrylamines using HCOONH4—Pd-C provides the corresponding N-monoalkyl analogues (VII).
