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Regioselective electrophilic oxidation of a 5-amino-endo-tricyclo[5.2.1.02,6]decenyl enaminone. Synthesis of a novel heterocyclic compound

โœ Scribed by Namakkal G Ramesh; Antonius J.H Klunder; Binne Zwanenburg


Publisher
Elsevier Science
Year
2001
Tongue
French
Weight
78 KB
Volume
42
Category
Article
ISSN
0040-4039

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โœฆ Synopsis


An unexpected tandem regioselective oxidation and cyclization of 5-((S)-2%-hydroxymethylpyrrolidin-1%-yl)-endo-tricyclo[5.2.1.0 2,6 ]deca-4,8-dien-3-ones 7 is reported. The reaction proceeds smoothly to afford novel tetracyclic compounds 8 and 9 in good yield, The structure of 8 was established by single-crystal X-ray analysis. Surprisingly, the C8 C9 norbornene double bond remains intact under these oxidative conditions.


๐Ÿ“œ SIMILAR VOLUMES


Heterocyclic synthesis via enaminones: R
โœ Kamal M. Dawood; Zaghloul E. Kandeel; Ahmad M. Farag ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 164 KB ๐Ÿ‘ 2 views

## 2-Acetylbenzothiazole (1) reacts with dimethylformamide dimethylacetal (DMF-DMA) to afford the enaminone 2. Compound 2 reacts regioselectively with some nitrilimines 5a-d and nitrile oxides 6b-d to afford the novel pyrazole and isoxazole derivatives 11a-d and 12b-d, respectively, which react wi

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โœ Balkis Al-Saleh; Mervat Mohammed Abdelkhalik; Afaf Mohammed Eltoukhy; Mohammed H ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› Journal of Heterocyclic Chemistry ๐ŸŒ English โš– 49 KB

## Abstract 1โ€Substitutedโ€3โ€dimethylaminopropenones **1aโ€d** reacted with acetylacetone and with ethyl acetoacetate to yield regioselectively 2,3,6โ€trisubstituted pyridines. Refluxing **1aโ€d** in acetic acid/ammonium acetate resulted in the formation of 6โ€substitutedโ€3โ€aroylpyridines, whereas reflu