AgSCF3/Na2S2O8-Promoted Trifluoromethylthiolation/Cyclization of o-Propargyl Arylazides/o-Alkynyl Benzylazides: Synthesis of SCF3-Substituted Quinolines and Isoquinolines
摘要:
A AgSCF3/Na2S2O8-promoted trifluoromethylthiolation/cascade cyclization of o-propargyl arylazides (or o-alkynyl benzylazides) triggered by a carbon carbon triple bond is reported. This strategy provides the synthesis of " valuable SCF3-substituted quinoline and isoquinoline systems via the construction of one C(sp(2)) SCF3 bond and one C-N bond within one process.
A new, selective method for the synthesis of 4-haloisoquinolines and 3-haloindoles is presented by the halopalladation cyclizations of alkynes with azides. In the presence of PdX2 (X = Br, Cl) and halide sources, a variety of 2-alkynylbenzylazides or 2-alkynyl aryl azides smoothly underwent the halopalladation cyclization reaction to afford the corresponding 3-substituted 4-haloisoquinolines and
Synthesis of Isoquinolylselenocyanates and Quinolylselenocyanates via Electrophilic Selenocyanogen Cyclization Induced by Pseudohalogen (SeCN)
<sub>2</sub>
Generated
<i>in situ</i>
A strategy for the synthesis of isoquinolylselenocyanates and quinolylselenocyanates through electrophilicselenocyanogencyclization has been developed. The feature of this reaction is that the sequential process was induced directly by generated in situpseudohalogen (SeCN)2generated in situ. Additionally, the obtained selenocyanates allowed functional group diversification, which could be potential
Visible-Light-Promoted Selenylation/Cyclization of <i>o</i>-Alkynyl Benzylazides/<i>o</i>-Propargyl Arylazides: Synthesis of Seleno-Substituted Isoquinolines and Quinolines