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Switchable Divergent Synthesis of 3-Dithiocarbamyl and 3-Carbamothioyl Chromones Through Chromone Annulation Reactions of o-Hydroxyenaminones With CS2
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AI
H
Y
Y
M
S
徐
Y
L
余
DOI：10.1002/adsc.70260.png)
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Abstract
En 中文
A practical, highly atom-economical and switchable α-C(sp2)−H (di)thiocarbamation/chromone annulation reaction for the divergent synthesis of two types of 3-substituted chromones has been developed. A variety of 3-dithiocarbamyl chromones and 3-carbamothioyl chromones were constructed efficiently from readily available o-hydroxyphenylenaminones (o-HPEs) and carbon disulfide (CS2) via KIO3/DTBP cooperative catalytic oxidation. Notably, this transformation proceeds efficiently by recycling by-product dimethylamine and employing equivalent amount of CS2. This strategy features high atom economy, mild reaction conditions, broad substrate scope, gram-scale preparation and further derivatization.
Keywords:
carbon disulfide
chromones
dithiocarbamates
high atom economy
o-hydroxyphenylenaminones
Journal
A
IF:
4
Papers:
1.0W
Citations:
2.6W
Organization
Cited Papers