Domino synthesis of 2-arylbenzo[b]furans by copper(II)-catalyzed coupling of o-iodophenols and aryl acetylenes
作者:E.A. Jaseer、D.J.C. Prasad、Govindasamy Sekar
DOI:10.1016/j.tet.2010.01.026
日期:2010.3
range of 2-arylbenzo[b]furans are synthesized through domino intermolecular C(aryl)–C(alkynyl) bond formation followed by intramolecular C(alkynyl)–O bond forming cyclization via copper(II)-catalyzed coupling of o-iodophenols and aryl terminal acetylenes. This method requires neither expensive palladium catalyst nor oxophilic phosphine ligands, can tolerate different functional groups. The methodology
This invention relates to certain novel imidazoline compounds and analogues thereof, to their use for the treatment of diabetes, diabetic complications, metabolic disorders, or related diseases where impaired glucose disposal is present, to pharmaceutical compositions comprising them, and to processes for their preparation.The compounds have the following formula: whereinX is -O-, -S-, or -NR5-;R5 is hydrogen, C1-8 alkyl, or an amino protecting group;R4 isY is -O-, -S-, or -NR8-;Y' is -O- or -S-;
Fluorination of 2-substituted benzo[b]furans with Selectfluor™
作者:Mingliang Wang、Xixi Liu、Lu Zhou、Jidong Zhu、Xun Sun
DOI:10.1039/c4ob02691h
日期:——
An efficient protocol was developed to access 3-fluoro-2-hydroxy-2-substituted benzo[b]furans with Selectfluor™ as the fluorinating reagent in MeCN and water. By utilizing SOCl2/Py as the dehydrating agent, the compounds above were readily converted to 3-fluorinated, 2-substituted benzo[b]furans in high yields.