35286-95-4Relevant academic research and scientific papers
Chemoselective Cobalt(I)-Catalyzed Cyclotrimerization of (Un)Symmetrical 1,3-Butadiynes for the Synthesis of 1,2,4-Regioisomers
Weber, Sebastian M.,Hilt, Gerhard
, p. 4106 - 4110 (2019)
The cobalt(I)-catalyzed cyclotrimerization of (un)symmetrical 1,4-disubstituted 1,3-butadiynes is presented. In the case of unsymmetrical 1,3-butadiynes, this reaction can generate eight 1,2,4-substituted and four 1,3,5-substituted isomers. A single 1,2,4-substituted isomer was formed in excellent yields (up to 99%) and exclusive regioselectivities (>99:1) when symmetrical or a 1,3-butadiyne with an aryl or alkyl substituent and a trimethylsilyl group were applied. A large number of products accepting a wide variety of functional groups were synthesized.
Regiospecific formation and unusual optical properties of 2,5-bis(arylethynyl)rhodacyclopentadienes: A new class of luminescent organometallics
Steffen, Andreas,Ward, Richard M.,Tay, Meng Guan,Edkins, Robert M.,Seeler, Fabian,Van Leeuwen, Magda,Beeby, Andrew,Batsanov, Andrei S.,Howard, Judith A. K.,Marder, Todd B.
, p. 3652 - 3666 (2014/04/03)
A series of 2,5-bis(arylethynyl)rhodacyclopentadienes has been prepared by a rare example of regiospecific reductive coupling of 1,4-(p-R-phenyl)-1,3- butadiynes (R=H, Me, OMe, SMe, NMe2, CF3, CO 2Me, CN, NO2, -
