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N-Heterocyclic Carbene-Catalyzed Annulations of Enals and Ynals with Indolin-3-ones: Synthesis of 3,4-Dihydropyrano[3,2- b ]indol-2-ones

โœ Scribed by Lu, Yingyan; Tang, Weifang; Zhang, Yu; Du, Ding; Lu, Tao


Book ID
120418421
Publisher
John Wiley and Sons
Year
2013
Tongue
English
Weight
238 KB
Category
Article
ISSN
1615-4150

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โœ Nitu Mahajan; Surrinder Koul; Tej K. Razdan ๐Ÿ“‚ Article ๐Ÿ“… 2011 ๐Ÿ› Journal of Heterocyclic Chemistry ๐ŸŒ English โš– 278 KB

## Abstract The synthesis of chiral (2__R__) 2,5โ€diarylโ€2,3โ€dihydropyrano[2,3โ€b]quinolinโ€4โ€ones, was achieved, at ambient temperature, by the reaction of 3โ€acetylโ€4โ€arylโ€carbostyril and an aldehyde, in the presence of bismuth triflateโ€“L(โˆ’)โ€proline complex, formed __in situ__. The products were obta