AI Article Synopsis
- Three new phosphine-free Ru-alkylidenes (7a-7c) have been created and tested as effective catalysts for ring closing metathesis (RCM) reactions.
- Structural confirmation of these compounds was achieved using spectroscopic techniques like NMR, HRMS, and single crystal X-ray diffraction.
- Among them, the tosylated carbenoid 7b outperformed others by effectively cyclizing various diene substrates with lower catalyst amounts compared to traditional Grubbs and Hoveyda-Grubbs catalysts.
Article Abstract
Three novel phosphine-free Ru-alkylidenes (7a-7c) have been synthesized and utilized as efficient catalysts for ring closing metathesis (RCM) reaction. Spectroscopic data, NMR and HRMS, along with single crystal X-ray diffraction analysis, were used to confirm their chemical structures. The tosylated carbenoid 7b showed the highest efficiency in cyclizing different acyclic diene substrates. RCM of various (un)substituted ,-diallylaniline derivatives and stereoselective RCM of different macromolecular dienes were well tolerated using only a catalytic amount (0.5-2.0 mol%) of the additive catalyst (7b) as compared to the well-known Grubbs (II) and Hoveyda-Grubbs (II) catalysts.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9044017 | PMC |
| http://dx.doi.org/10.1039/d1ra07428h | DOI Listing |
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