Archive for the ‘Lanthanides’ Category
Posted by naturalproductman on March 5, 2015
Scott Schaus and co-workers from Boston University have reported in JACS on a holmium catalyzed [4+2] cascade.
JACS paper
Posted in Cascade Reactions, Holmium, Lanthanides, Methodology | Leave a Comment »
Posted by naturalproductman on June 3, 2014
Ang Li and co-workers from SIOC have reported in JACS on the syntheses of taiwaniadducts B, C, and D.
JACS paper
Posted in Europium, Lanthanides, Methodology, Terpenes, Terpenoids, Total Synthesis | Leave a Comment »
Posted by naturalproductman on June 7, 2011
Masakatsu Shibasaki and co-workers at the University of Tokyo have reported in ACIEE on a silver/lanthanum catalyzed Conia-ene reaction.
ACIEE paper
Posted in Cascade Reactions, Conia-Ene, Lanthanides, Methodology, Named Reactions, Silver, Transition Metal | Leave a Comment »
Posted by naturalproductman on January 26, 2011
Yen-Ho Chu and co-workers at the National Chung Cheng University in Taiwan have published in Organic Letters on a synthesis of luotonin. This compound has in vitro activity against murine leukemia P-388 cell line with an IC50 value of 6.3 micromolar.
OL paper
Posted in Alkaloids, Cancer, Cascade Reactions, leukemia, Methodology, One pot, Transition Metal, Ytterbium | Leave a Comment »
Posted by naturalproductman on August 17, 2010
Jin-Heng Li and co-workers from Hunan Normal University have published in Synthesis on a Conia-ene reaction using Yb and Zn. This reaction is catalytic in zinc but stoichiometric in ytterbium. When a terminal alkyne is used, the cyclization is in the exo-dig mode, but when an internal alkyne is used, the cyclization is in the endo-dig mode.
Synthesis paper
Posted in Cascade Reactions, Conia-Ene, Methodology, Named Reactions, Ring forming, Transition Metal, Ytterbium, Zinc | Leave a Comment »
Posted by naturalproductman on June 27, 2010
Takeo Konakahara and co-workers at the Tokyo University of Science have reported in the European Journal of Organic Chemistry on a multicomponent approach to synthesize aza dienes and followed by a ytterbium catalyzed [4+2] reaction between the azadiene and TMS-cyanide.
European JOC paper
Posted in Cascade Reactions, Methodology, Multi-Component Coupling, Transition Metal, Ytterbium | Leave a Comment »
Posted by naturalproductman on May 11, 2010
Atsushi Nishida and co-workers from Chiba University have recently reported in JOC on the asymmetric synthesis of platyphyllide with the key reaction being an asymmetric Diels-Alder reaction.
JOC paper
Posted in Asymmetric, Cascade Reactions, Cycloaddition, Diels-Alder, Ito-Saegusa oxidation, Methodology, Named Reactions, Palladium, Pericyclic reactions, Transition Metal, Ytterbium | Leave a Comment »
Posted by naturalproductman on May 8, 2010
Marek Chmielewski and co-workers at the Institute of Organic Chemistry of the Polish Academy of Sciences have recently reported in Tetrahedron on some intramolecular cyclization reactions generating an acyliminium ion in the presence of either a propargyl, allyl, or vinyl silane.
Tetrahedron paper
Posted in Cascade Reactions, Methodology, Ring forming, Titanium, Transition Metal, Ytterbium | Leave a Comment »