Synthesis 2013; 45(22): 3173-3178
DOI: 10.1055/s-0033-1338530
paper
© Georg Thieme Verlag Stuttgart · New York

Synthesis of a Naphtho-pyrido-Annulated Iodonium Salt and Pd-Catalyzed Transformation to 7H-Naphtho[1,8-bc][1,5]naphthyridine

Julien Letessier
Institute for Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10–14, 55099 Mainz, Germany   Fax: +49(6131)3925338   Email: detert@uni-mainz.de
,
Mario Geffe
Institute for Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10–14, 55099 Mainz, Germany   Fax: +49(6131)3925338   Email: detert@uni-mainz.de
,
Dieter Schollmeyer
Institute for Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10–14, 55099 Mainz, Germany   Fax: +49(6131)3925338   Email: detert@uni-mainz.de
,
Heiner Detert*
Institute for Organic Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10–14, 55099 Mainz, Germany   Fax: +49(6131)3925338   Email: detert@uni-mainz.de
› Author Affiliations
Further Information

Publication History

Received: 23 June 2013

Accepted after revision: 22 August 2013

Publication Date:
18 September 2013 (online)


Dedicated to Heinz Kolshorn on the occasion of his 70th birthday

Abstract

Nitropyridylnaphthalene is the central intermediate for the synthesis of naphthonaphthyridine and benzo-δ-carboline. Whereas the Cadogan reaction gives the carboline, transformation of the nitro group to iodo followed by oxidation and cyclization results in an iodonium salt. A twofold Pd-catalyzed amination leads to the naphthyridine.

Supporting Information