215322-65-9Relevant academic research and scientific papers
Atom-Economical Ni-Catalyzed Diborylative Cyclization of Enynes: Preparation of Unsymmetrical Diboronates
Cabrera-Lobera, Natalia,Quirós, M. Teresa,Brennessel, William W.,Neidig, Michael L.,Bu?uel, Elena,Cárdenas, Diego J.
supporting information, p. 6552 - 6556 (2019/08/20)
We report a Ni-catalyzed diborylative cyclization of enynes that affords carbo- and heterocycles containing both alkyl- and alkenylboronates. The reaction is fully atom-economical, shows a broad scope, and employs a powerful and inexpensive catalytic Ni-b
Chiral Cationic CpxRu(II) Complexes for Enantioselective Yne-Enone Cyclizations
Kossler, David,Cramer, Nicolai
supporting information, p. 12478 - 12481 (2015/10/19)
The cyclopentadienyl (Cp) group is a ligand of great importance for many transition-metal complexes used in catalysis. Cationic CpRuII complexes with three free coordination sites are highly versatile catalysts for many atom-economic transformations. We report the synthesis of a family of CpxRuII complexes with chiral Cp ligands keeping the maximum number of available coordination sites. The cationic members are efficient and selective catalysts for yne-enone cyclizations via formal hetero-Diels-Alder reactions. The transformation proceeds in 1 h at -20 °C and provides pyrans in up to 99:1 er. Unsaturated ester or Weinreb-amide substrates directly yield the iridoid skeleton.
The role of cyclobutenes in gold(I)-catalysed skeletal rearrangement of 1,6-enynes
Escribano-Cuesta, Ana,Perez-Galan, Patricia,Herrero-Gomez, Elena,Sekine, Masaki,Braga, Ataualpa A. C.,Maseras, Feliu,Echavarren, Antonio M.
supporting information; experimental part, p. 6105 - 6111 (2012/09/05)
1,6-Enynes with electron-donating substituents at the alkyne undergo gold(i)-catalysed single cleavage skeletal rearrangement, whereas substrates with electron-withdrawing substituents evolve selectively to double cleavage rearrangement. Theoretical calcu
Immobilized Co/Rh heterobimetallic nanoparticle-catalyzed Pauson-Khand-type reaction
Kang, Hyun Park,Young, Keun Chung
, p. 854 - 866 (2007/10/03)
Co/Rh heterobimetallic nanoparticles were prepared from cobalt-rhodium carbonyl clusters [Co2Rh2(CO)12 and Co 3Rh(CO)12] and immobilized on charcoal. HR-TEM revealed that the size of the heterobimetal
