17398-03-7Relevant academic research and scientific papers
Palladium(II)-catalyzed enantioselective aerobic dialkoxylation of 2-propenyl phenols: A pronounced effect of copper additives on enantioselectivity
Zhang, Yang,Sigman, Matthew S.
, p. 3076 - 3077 (2008/04/18)
A direct O2-coupled Pd(II)-catalyzed enantioselective dialkoxylation of 2-propenylphenols has been developed by utilizing chiral quinoline oxazoline ligands. A detrimental effect of added copper salts on enantioselectivity was observed which is attributed to the displacement of the chiral ligand off of Pd(II). Copyright
Synthesis of coumarins by ring-closing metathesis using Grubbs' catalyst
Nguyen Van, Tuyen,Debenedetti, Silvia,De Kimpe, Norbert
, p. 4199 - 4201 (2007/10/03)
A novel generally applicable synthesis of coumarins from phenolic substrates utilizing ring-closing metathesis is described. This sequence involves O-allylation of phenols followed by ortho-Claisen rearrangement, subsequent based-induced isomerization affording 2-(1-propenyl)phenols, acylation with acryloyl chloride, and finally ring-closing metathesis (RCM) with Grubbs' second generation catalyst.
