Phillip Jungk, Fabian Fischer, Indre Thiel, Marko Hapke,
"CoCl(PPh3)3 as Cyclotrimerization Catalyst for Functionalized Triynes under Mild Conditions"
, in The Journal of Organic Chemistry, Vol. 80, American Chemical Society, Seite(n) 9781-9793, 2015, ISSN: 1520-6904
Original Titel:
CoCl(PPh3)3 as Cyclotrimerization Catalyst for Functionalized Triynes under Mild Conditions
Sprache des Titels:
Englisch
Original Kurzfassung:
The ubiquitary Co(I) complex CoCl(PPh3)3 was
found to be a convenient catalyst for the [2 + 2 + 2]
cycloaddition of functionalized triynes under mild reaction
conditions and devoid of any additional additive, yielding the
substituted arene compounds. Successful development of
synthetic routes to various triynes and the subsequent cyclotrimerization
key step gave systematic access to a variety of
different bi- and triaryls with good to excellent yields for the
cyclization.