Organic synthesis using (diacetoxyiodo)benzene (DIB): Unexpected and novel oxidation of 3-oxo-butanamides to 2,2-dihalo-<i>N</i>-phenylacetamides
作者:Wei-Bing Liu、Cui Chen、Qing Zhang、Zhi-Bo Zhu
DOI:10.3762/bjoc.8.38
日期:——
cleavage of a carbon-carbon bond in the presence of DIB and a Lewis acid as the halogen source, and thus this method significantly expands the value of DIB as a unique and powerful tool in chemical synthesis. This protocol not only adds a new aspect to reactions that use other hypervalent iodine reagents but also provides a wide space for the synthesis of disubstituted acetamides.
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.