Geminal Dichlorination of Phenyliodonium Ylides of β-Dicarbonyl Compounds through Double Ligand Transfer from (Dichloroiodo)benzene
作者:Graham Murphy、Jason Tao、Tina Tuck
DOI:10.1055/s-0035-1561283
日期:——
analogous diazocarbonyl compounds, reactions of iodoniumylides were unilaterally faster, and often gave the products in higher yield. Pre-formed phenyliodoniumylides of cyclic and acyclic β-diketones, β-keto esters and β-diesters were reacted with (dichloroiodo)benzene, resulting in transfer of both chloride ligands onto the ylidic carbon. These two hypervalent iodine(III) compounds exhibit high reactivity
Dichloromeldrum’s Acid (DiCMA): A Practical and Green Amine Dichloroacetylation Reagent
作者:David M. Heard、Alastair J. J. Lennox
DOI:10.1021/acs.orglett.1c00850
日期:2021.5.7
dichloroacetylation of anilines and alkylamines to produce α,α-dichloroacetamides, which are important motifs for medicinal chemistry. Products are formed in good to excellent yields with reagent grade solvents, and, as the only byproducts are acetone and CO2, no column chromatography is required. Thus, this reagent is practical, efficient, and green for the dichloroacetylation of primary amines.