Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 141, Issue 10, Pages 4194-4198Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.8b13390
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Funding
- JSPS
- JSPS KAKENHI [15H05808, 15K21707, 2702, 15KK0185]
- Fund for the Promotion of Joint International Research (Fostering Joint International Research)
- Multidisciplinary Research Laboratory System of Graduate School of Engineering Science, Osaka University
- National Institutes of Health [S10OD011952, 1R35GM119457]
- Alfred P. Sloan Foundation
- University of Minnesota
- Grants-in-Aid for Scientific Research [15KK0185, 15H05808, 15K21707] Funding Source: KAKEN
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The combination of VCl3(THF)(3) and N,N-bis(trimethylsilyl)aniline (1a) is an efficient catalyst for the [2+2+1] coupling reaction of alkynes and azobenzenes, giving multisubstituted pyrroles. A plausible reaction mechanism involves the generation of a mono(imido)vanadium(III) species as an initiation step, where la served as an imido source with concomitant release of 2 equiv of ClSiMe3, followed by a reaction with azobenzene to form a catalytically active bis(imido)vanadium(V) species via N=N bond cleavage.
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