3698-42-8Relevant academic research and scientific papers
Bismuth(III) triflate: Novel and efficient catalyst for Claisen and Fries rearrangements of allyl ethers and phenyl esters
Sreedhar,Swapna,Sridhar
, p. 1433 - 1440 (2007/10/03)
Bismuth(III) triflate catalyzed Claisen and Fries rearrangements of allyl phenyl ethers and phenyl acetates have been presented. The reaction proceeds smoothly and yields corresponding rearranged products in good yields. The bismuth triflate displays higher activity over the corresponding La, Yb, and Sc triflates.
EFFECT OF STRONG NUCLEOPHILE ON THE DIRECTION OF TRANSFORMATION IN ALKENYL ARYL ETHERS DURING CATALYTIC REARRANGEMENT
Bunina-Krivorukova, L. I.,Feoktistov, V. M.,Aleksandrova, E. K.,Bal'yan, Kh. V.
, p. 745 - 750 (2007/10/02)
The results from the introduction of tetrahydrothiophene into the reaction zone during the catalytic rearrangements of alkenyl aryl ethers demonstrate the possibility of a change in the direction of transformation of the ether from -sigmatropic rearrangement to intermolecular alkenylation of a concurrent strong nucleophile.The heterolytic character of the catalytic intermolecular rearrangement (alkenylation) was confirmed by the formation of alkenylsulfonium salts, the structure of the allyl unit which corresponded to the most thermodynamically stable isomer.
