Results 61 to 70 of about 55,078 (177)

Silver-promoted reactions of bicyclo[3.2.1]octadiene derivatives.

Organic Letters, 2002
[reaction: see text] Highly substituted bicyclo[3.2.1]octadiene building blocks are easily prepared from tetrachloro- or tetrabromocyclopropene through reaction with cyclic dienes. These polyhalogenated derivatives can serve as precursors to a variety of
Ravi S. Orugunty, D. Wright, M. Battiste, K. Abboud   +3 more
semanticscholar   +1 more source

Hydrogenative Cyclopropanation and Hydrogenative Metathesis

, 2019
The unusual geminal hydrogenation of a propargyl alcohol derivative with [CpXRuCl] as the catalyst entails formation of pianostool ruthenium carbenes in the first place; these reactive intermediates can be intercepted with tethered alkenes to give either
Biberger, T., Fürstner, A., Guthertz, A., Peil, S.   +3 more
core   +1 more source

Synthesis of paramagnetic tetranuclear rhodium and iridium complexes with the 2,6-pyridinedithiolate ligand. Redox-induced degradation to diamagnetic triiridium compounds [PDF]

, 2016
The tetranuclear complexes [M4(μ-PyS2)2(diolefin)4] [PyS2 = 2,6-pyridinedithiolate; M = Rh, diolefin = cod (1,5-cyclooctadiene) (1), tfbb (tetrafluorobenzo[5,6]bicyclo[2.2.2]octa-2,5,7-triene) (2); M = Ir, diolefin = cod (3), tfbb (4)] exhibit two one ...
Alonso, Pablo J., Casado, Miguel A., Ciriano, Miguel A., Lahoz, Fernando J., López, José A., Oro, Luis A., Pérez-Torrente, Jesús J.   +6 more
core   +1 more source

Regiodivergent photocyclization of dearomatized acylphloroglucinols: asymmetric syntheses of (—)-nemorosone and (—)-6-epi-garcimultiflorone A [PDF]

, 2019
Regiodivergent photocyclization of dearomatized acylphloroglucinol substrates has been developed to produce type A polycyclic polyprenylated acylphloroglucinol (PPAP) derivatives using an excited-state intramolecular proton transfer (ESIPT) process ...
Boyce, Jonathan H., Kandappa, Sunil K., Porco, Jr., John A., Sivaguru, Jayaraman, Wen, Saishuai   +4 more
core   +1 more source

A Dihydroxo-Bridged Ferric Dimer [PDF]

, 1969
Recent investigations have produced a large number of dimeric complexes containing the oxo-bridged structural unit Fe_2O^(4+). Here we report the isolation and characterization of [Fe (pic)_2OH]_2 which apparently is the first example of a ...
Gray, Harry B., Rossman, George R., Schugar, Harvey J.   +2 more
core  

α-Amino bicycloalkylation through organophotoredox catalysis

Chemical Science
Bridged bicycloalkanes such as bicyclo[1.1.1]pentanes (BCPs) and bicyclo[3.1.1]heptanes (BCHeps) are important motifs in contemporary drug design due to their potential to act as bioisosteres of disubstituted benzene rings, often resulting in compounds ...
Jeremy Nugent, Adrián López-Francés, A. Sterling, Min Yi Tay, Nils Frank, J. Mousseau, Fernanda Duarte, Edward A. Anderson   +7 more
semanticscholar   +1 more source

1,3-Dicarbonyl compounds in stereoselective domino and multicomponent reactions

, 2010
International audienceModern organic synthesis focuses on the discovery and the development of stereoselective multiple bond-forming transformations allowing the creation of several covalent bonds in a single operation.
Bonne, Damien, Constantieux, Thierry, Coquerel, Yoann, Rodriguez, Jean   +3 more
core   +4 more sources

Synthesis of bridged steroids. I. Steroids having a bridged bicyclo[3.2.1]octane ring system of the phyllocladene type.

Chemical and pharmaceutical bulletin, 1968
W. Nagata, M. Narisada
semanticscholar   +1 more source

Carbonyl(h5-Cyclopentadienyl)(tetrafluoroborato)molybdenum and tungsten complexes [PDF]

, 1989
Beck, Wolfgang, Schloter, Klaus, Sünkel, Karlheinz, Urban, Günter   +3 more
core   +2 more sources

Ring expansion of cyclobutylmethylcarbenium ions to cyclopentane or cyclopentene derivatives and metal-promoted analogous rearrangements [PDF]

, 2011
D'hooghe, Matthias, De Kimpe, Norbert, Leemans, Erika   +2 more
core   +1 more source