WebNov 17, 2008 · In conclusion, we have developed a smooth tandem [3+2]/ring opening reaction between D/A CP 1,1-diesters and enol silyl ethers to afford 1,6-dicarbonyl … WebAl(OTf)3 was found to be an extremely effective catalyst (at ppm levels) for ring opening reactions of epoxides using a range of alcohols.
Otf Chain - Etsy
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An efficient protocol for regioselective ring opening of
WebMay 24, 2024 · Fatty acids slim down: A new method for γ-lactone preparation based on ring contraction has been developed.Starting from macrolides, W(OTf) 6 was used to catalyze ring-opening polymerization then depolymerization to produce the stable five-membered γ-lactones in the ionic liquid [EMIM]OTf. γ-Lactones were also produced when the substrate … WebThe Cover Feature shows W(OTf) 6 catalyzed ring-contraction of macrolides to stable five-membered γ-lactones in [EMIM]OTf. More information can be found in the Full Paper by Xie et al. on page 2332 in Issue 14, 2024 (DOI: 10.1002/cssc.202400587). WebJul 19, 2024 · A convenient Y(OTf) 3-catalyzed cascade formal [4 + 2] cyclization approach for the formation of 1,4-benzoxazine scaffolds from benzoxazoles and propargyl alcohols through a ring-opening and regioselective ring-closure process has been developed.By using this mild and practical protocol, a broad range of aldehyde-containing 1,4-benzoxazine … downeast energy augusta maine