1030840-72-2Relevant academic research and scientific papers
Enantioselective construction of bridged multicyclic skeletons: Intermolecular [2+2+2] cycloaddition/intramolecular diels-alder reaction cascade
Kobayashi, Masayuki,Suda, Takeshi,Noguchi, Keiichi,Tanaka, Ken
supporting information; experimental part, p. 1664 - 1667 (2011/03/22)
Bridging a gap: A cationic rhodium(I)/ligand complex catalyzes the title reaction of alkynes and amide-linked 1,5-dienes, leading to bridged multicyclic compounds, with high chemo-, regio-, and enantioselectivity (see scheme; Bn=benzyl).
Commercially available liquid enol ethers and acetates as gaseous alkyne equivalents in cationic Rh(I)/BINAP-catalyzed chemo- and regioselective formal cross-alkyne cyclotrimerizations
Hara, Hiromi,Hirano, Masao,Tanaka, Ken
scheme or table, p. 5093 - 5101 (2009/12/01)
A cationic rhodium(I)/BINAP complex catalyzes partial intramolecular [2+2+2] cycloadditions of 1,6- and 1,7-diynes with enol ethers or a ketene acetal giving substituted benzenes in good yields. The same catalyst also catalyzes complete intermolecular [2+
Enantioselective synthesis of α,α-disubstituted α-amino acids by Rh-catalyzed [2+2+2] cycloaddition of 1,6-diynes with protected dehydroamino acid
Tanaka, Ken,Takahashi, Maho,Imase, Hidetomo,Osaka, Takuya,Noguchi, Keiichi,Hirano, Masao
, p. 6289 - 6293 (2008/09/21)
We have determined that a cationic rhodium(I)/BINAP complex catalyzes a [2+2+2] cycloaddition of 1,6-diynes with a protected dehydroamino acid, leading to protected α-amino acids bearing a quaternary carbon center in high yield with high enantioselectivity.
Liquid enol ethers and acetates as gaseous alkyne equivalents in Rh-catalyzed chemo- and regioselective formal cross-alkyne cyclotrimerization
Hara, Hiromi,Hirano, Masao,Tanaka, Ken
supporting information; experimental part, p. 2537 - 2540 (2009/05/11)
(Chemical Equation Presented) A cationic rhodium(I)/rac-BINAP complex catalyzes chemo- and regioselective formal cross-cyclotrimerizations of alkynes with enol ethers or acetates. Commercially available and cheap liquid enol ethers and acetates could be used as convenient gaseous alkyne equivalents in the present rhodium catalyses.
