131180-38-6Relevant articles and documents
Epoxides as Dual-Functionalized Alkylating Reagents in Catellani Reactions for the Assembly of Heterocycles
Cheng, Hong-Gang,Wu, Chenggui,Zhou, Qianghui
, p. 829 - 837 (2020)
Reported is a cooperative catalytic system consisting of a complex of Pd with dicyclohexyl(2′,4′,6′-Triisopropylbiphenyl-2-yl)phosphine (XPhos) and the potassium salt of 5-norbornene-2-carboxylic acid that permits the use of epoxides as dual-functionalized alkylating reagents in Catellani-Type reactions for the assembly of heterocycles. Salient features of this research include readily available substrates, use of the potassium salt of 5-norbornene-2-carboxylic acid as a catalytic mediator as well as a base, and excellent regioselectivity for the cleavage of epoxides. This mild, chemoselective, scalable, atom-And step-economic protocol offers a straightforward approach for the assembly of isochroman and 2,3-dihydrobenzofuran scaffolds.
A 13C NMR Study of the 1:1 Hydrogen Bond between Trifluoroacetic Acid and Aromatic Ethers in Deuteriochloroform
Schuster, Ingeborg I.
, p. 624 - 631 (2007/10/02)
From the measured values of the equilibrium constants and 13C NMR shift changes for 1:1 hydrogen bonding of trifluoroacetic acid with 2-alkyl- and 2,6-dialkylanisoles and 7-alkyl-2,3-dihydrobenzofurans in deuteriochloroform, conclusions are drawn concerni
