Construction of Diverse Dihydrodibenzofuranones by Migration/Intramolecular Arylation of Iodonium Ylides
作者:Shizuka Mei Bautista Maezono、Hari Datta Khanal、Priyanka Chaudhary、Shreedhar Devkota、Yong Rok Lee
DOI:10.1002/bkcs.12209
日期:2021.2
A novel and facile methodology for synthesizing diverse dihydrodibenzofuranones from easily accessible cyclic iodonium ylides is achieved. This protocol proceeds through the aryl migration of iodonium ylide followed by Pd‐catalyzed intramolecular arylation.
Divergent synthesis of 3,4-dihydrodibenzo[<i>b</i>,<i>d</i>]furan-1(2<i>H</i>)-ones and isocoumarins <i>via</i> additive-controlled chemoselective C–C or C–N bond cleavage
Rh(III)-Catalyzed C–C/C–Obondformationbetween cyclic 2-diazo-1,3-diketones and salicylamides with additive-controlled chemoselectivity is described. The reaction proceeded under mild reaction conditions and exhibited good functional group tolerance and scalability. 3,4-Dihydrodibenzo[b,d]furan-1(2H)-ones were obtained in moderate to excellent yields (55–90%) through a tandem N–H activation/C–C cleavage/etherification