In situ phosphonium-containing Lewis base-catalyzed 1,6-cyanation reaction: a facile way to obtain α-diaryl and α-triaryl acetonitriles
Literature Information
Publication Date
2021-11-11
DOI
10.1039/D1QO01501J
Impact Factor
5.281
Authors
Yuan Chen, Xiaoyu Ren, Yumeng Guo, Bing Yi, Hongkui Zhang, Guowei Gao, Tianli Wang
View Original
Abstract
We present a phosphonium-containing catalyst generated in situ from phosphine and tert-butyl acrylate that serves as an unusual Lewis base catalyst. It was applied for the promotion of a remote 1,6-cyanation reaction of p-quinone methides and fuchsones employing trimethylsilyl cyanide as the cyanide source. A diverse range of α-diaryl and α-triaryl acetonitriles was obtained in high yields under mild reaction conditions with low catalyst loading (5 mol%). The practicality and utility of this protocol were demonstrated via the gram-scale preparation and facile elaboration of products. Mechanistic investigations (in situ NMR and ESI-MS analysis) were employed to characterize the active zwitterionic phosphonium intermediate, which was the “true” active catalyst.
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Source Journal
Organic Chemistry Frontiers
CiteScore:
7.8
Self-citation Rate:
8.7%
Articles per Year:
724
Organic Chemistry Frontiers publishes high-quality research from across organic chemistry. Emphases are placed on studies that make significant contributions to the field of organic chemistry by reporting either new or significantly improved protocols or methodologies. Topics include, but are not limited to the following: Organic synthesis Development of synthetic methodologies Catalysis Natural products Functional organic materials Supramolecular and macromolecular chemistry Physical and computational organic chemistry
Recommended Compounds
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Ethyl 3-((6-(4,5-dihydro-1H-benzo[d]azepin-3(2H)-yl)-2-(pyridin-2-yl)pyrimidin-4-yl)amino)propanoate
CAS Number:
1373423-53-0
Molecular Formula:
C24H27N5O2
2-Methyl-2-propanyl (3R,5S)-6-chloro-3,5-dihydroxyhexanoate
CAS Number:
154026-93-4
Molecular Formula:
C10H19ClO4
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