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An Efficient, Easy Route for the Synthesis of 2,2′:6′,2′′-Terpyridine 1′-Oxides

✍ Scribed by Reza-Ali Fallahpour; Markus Neuburger

Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
224 KB
Volume
2001
Category
Article
ISSN
1434-193X

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✦ Synopsis

2,6-Dibromopyridine N-oxide and 4-nitro-2,6-dibromopyridine N-oxide were treated with tributyl(pyridin-2-yl)stannane under the conditions of the Stille coupling reaction. Derivatives of 2,2Ј-bipyridine 1-oxides as well as 2,2Ј:6Ј,2ЈЈ-terpyridine 1Ј-oxides were synthesised. Oxidation of 2,2Ј:6Ј,2ЈЈ-terpy-

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## Abstract Highly substituted 1,2‐allenyl ketones can be easily and efficiently prepared from organometallic reagents and readily available 2‐(1‐alkynyl)‐2‐alken‐1‐ones. The synthetic application of 1,2‐allenyl ketone products was also showcased by palladium‐catalyzed further transformation.