Iodobenzene-catalyzed synthesis of α,α′-dihydroxy ketones: In situ generation of [bis(trifluoroacetoxy)iodo]benzene
摘要:
Exposure of ethynyl carbinols to oxone/(CF3CO)(2)O in the presence of a catalytic amount of iodobenzene afforded ,-dihydroxy ketones in good yield, which are common structural motifs in natural products and biologically active compounds. Compared with traditional methods, this method is more convenient and avoids using stoichiometric amounts of hypervalent iodine reagents.
Gold-catalyzed reactions of propargylic esters with vinylazides for the synthesis of Z- or E-configured buta-1,3-dien-2-yl esters
作者:Sachin Bhausaheb Wagh、Rai-Shung Liu
DOI:10.1039/c5cc05945c
日期:——
Gold-catalyzed synthesis of buta-1,3-dien-2-yl esters by the reaction of propargyl esters with vinylazides is described; the reaction mechanism is postulated to involve a vinyl attack of vinylazides at alkenyl gold carbenes.
(Diacetoxyiodo)benzene-Mediated Reaction of Ethynylcarbinols: Entry to α,α′-Diacetoxy Ketones and Glycerol Derivatives
作者:Qing-Rong Liu、Cheng-Xue Pan、Xiao-Pan Ma、Dong-Liang Mo、Gui-Fa Su
DOI:10.1021/acs.joc.5b00740
日期:2015.6.19
Efficient access to α,α′-diacetoxy ketones has been developed from ethynylcarbinols and PhI(OAc)2. A plausible mechanism for this was proposed on the basis of experimental studies. The usefulness of α,α′-diacetoxy ketone products has been documented, and glycerol derivatives can be easily synthesized in good yields via a one-potreaction.