Visible-light-mediated synthesis of β-keto sulfones using g-C<sub>3</sub>N<sub>4</sub> as a recyclable photocatalyst under sustainable conditions
作者:Binoyargha Dam、Ashish Kumar Sahoo、Bhisma K. Patel
DOI:10.1039/d2gc02254k
日期:——
photocatalyst. The mechanistic investigation revealed that the formation of β-keto sulfones from phenylacetylenes proceeds via a β-iodo sulfone intermediate. While for ketones, it proceeds via a radical C–I cleavage of the in situ generated α-iodo ketone intermediate, followed by the attack of the sulfonyl radical. Potent biologically active compounds like anti-analgesic agents and CES1 inhibitors were synthesized
PdCl
<sub>2</sub>
/CuCl
<sub>2</sub>
/Bi(OTf)
<sub>3</sub>
‐promoted Construction of Sulfonyl Dibenzooxabicyclo[3.3.1]nonanes and Arylnaphthalenes via Intramolecular Annulation of Sulfonyl
<i>o</i>
‐Allylarylchromanones
作者:Nai‐Chen Hsueh、Meng‐Yang Chang
DOI:10.1002/adsc.202001021
日期:2020.12.22
PdCl2/CuCl2/Bi(OTf)3‐promoted intramolecular domino annulation of sulfonyl o‐allylarylchromanones provides tetracyclic sulfonyl dibenzooxabicyclo[3.3.1]nonanes and bicyclic arylnaphthalenes with good to excellent yields in MeOH at room (25 °C) and refluxing (65 °C) temperature, respectively. The starting sulfonyl o‐allylarylchromanones can be easily obtained from the intermolecular cyclocondensation of α‐sulfonyl