Results 101 to 110 of about 66,905 (286)

Synthesis and Isolation of Bismuth Scorpionate Complexes: Toward Bond Activation via Bismuth‐Ligand Cooperation

Chemistry – A European Journal, EarlyView.
ABSTRACT Over the past twenty years, main group chemistry has significantly expanded its scope to include reactivities once considered the exclusive domain of transition metals. Among the emerging concepts, element‐ligand cooperation has proven to be a powerful strategy for enabling bond activation reactions but remains relatively unexplored for ...
Lennart Hensle, Viktoria H. Gessner
wiley   +1 more source

Conformational analysis of olefin-carbene ruthenium metathesis catalysts [PDF]

, 2009
We settle a long-standing disagreement of DFT with experiment (both solution and gas phase) for the phosphine dissociation process in Grubbs metathesis catalysis. Our findings with the M06 functional provide further support to gas-phase experimental work,
Benitez, Diego, Goddard, William A., III, Tkatchouk, Ekaterina   +2 more
core   +1 more source

Distinct Ligand‐ and Metal‐Centered Phosphorescence in a Terbium Carbazolyl Complex

Chemistry – A European Journal, EarlyView.
Terbium and lanthanum carbazolide complexes show two distinct modes of luminescence: Strongly temperature‐dependent narrow‐line terbium emission could be induced. In addition, both the terbium and the lanthanum complexes show broad‐line interligand emission processes with excited states of microsecond life‐time.
Xiaofei Sun, Frederic Krätschmer, Julia Feye, Marcel Lukanowski, Dominik Graf, Sergei Lebedkin, Manfred Kappes, Florian Weigend, Peter W. Roesky, Alexander Hinz   +9 more
wiley   +1 more source

A Convenient, Safe, and Atom-Economical Route to a Large Portfolio of Grubbs-Type Catalysts for Olefin Metathesis via Four-Coordinate Ruthenium Alkylidynes. [PDF]

Angew Chem Int Ed Engl
It may seem counterintuitive to first target a ruthenium alkylidyne when Grubbs‐type ruthenium carbene complexes are the actual goal. In the end, however, this tactic pays valuable dividends in terms of practicality, atom economy, flexibility as well as safety: the new route provides ready access to a large assortment of catalysts for alkene metathesis
Cui M, Fürstner A.
europepmc   +3 more sources

One-pot multi-reaction processes: synthesis of natural products and drug-like scaffolds [PDF]

, 2014
One-pot multi-reaction processes involving Overman rearrangements, metathesis cyclizations, and Diels–Alder reactions have been developed for the rapid and efficient synthesis of amino-substituted carbocyclic and heterocyclic compounds.
Calder, Ewen D.D., Grafton, Mark W., Sutherland, Andrew   +2 more
core   +1 more source

The Stabilization of High‐Nitrogen Systems: 10 Catenated Nitrogen Chain

Chemistry – A European Journal, EarlyView.
Improving the understanding of high‐nitrogen materials. ABSTRACT High‐nitrogen materials have attracted intense interest in recent decades due to their unique chemical, physical, and biological properties. Stabilizing high‐nitrogen materials is often challenging as they become more unstable with increasing nitrogen catenation and nitrogen mass ...
Nicholas F. Scherschel, Thomas R. Talbot IV, Matthias Zeller, Davin G. Piercey   +3 more
wiley   +1 more source

West Slavic accentuation [PDF]

, 2010
At the time of the earliest reconstructible dialectal divergences, which belong to the Late Middle Slavic period of my chronology (stages 7.0 - 8.0 of Kortlandt 1989a, 2003, 2008), the West Slavic languages represented the most conservative part of the ...
Kortlandt, Frederik H. H.
core  

One-pot multicomponent synthesis of 2,3-dihydropyrans: new access to furanose–pyranose 1,3-C–C-linked-disaccharides [PDF]

, 2009
An efficient synthesis of 2,3-dihydropyrans starting from different terminal alkynes was developed. The 2,3-dihydropyrans were obtained in a few minutes through a microwave-assisted multicomponent enyne cross-metathesis/hetero-Diels–Alder reaction ...
Armstrong, Bataille, Beccalli, Bertozzi, Boivin, Castagnolo, Castagnolo, Class, Coppi, Daniele Castagnolo, Dondoni, Dondoni, Giessert, Guerrini, Haraguchi, Li, Liu, Lorenzo Botta, Maurizio Botta, Nair, Nicolaou, Oishi, Ramon, Schmidt, Strecker, Strubing, Tietze, Tietze, Yet   +28 more
core   +1 more source

Synthesis of 1‐Alkynylboronates, 1,1‐Diborylalkenes, and 1,1,1‐Triborylalkanes: Challenges and Opportunities

Chemistry – A European Journal, EarlyView.
ABSTRACT In the field of organoboron chemistry, multi(boronate) esters have emerged as crucial intermediates, with various applications in synthetic chemistry, material technology, and life sciences. This mini‐review discusses recent advancement in the synthesis of these versatile compounds, particularly alkynylboronates, 1,1‐diborylalkenes, and 1,1,1 ...
Son Hoai Doan, Vu Nguyen Tran, Thanh Vinh Nguyen   +2 more
wiley   +1 more source

Stereoselective protecting group free synthesis of d,l-gulose ethyl glycoside via multicomponent enyne cross metathesis—hetero Diels–Alder reaction [PDF]

, 2009
An efficient and stereoselective synthesis of d,l-gulose was described. The key step of the synthetic route is represented by a multicomponent enyne cross metathesis—hetero Diels–Alder reaction which allows the formation of the pyran ring from cheap and ...
Aoyagi, Boger, Boger, Bonini, Castagnolo, Chuit, Daniele Castagnolo, Dondoni, Furin, Giessert, Katano, Lorenzo Botta, Maimone, Maurizio Botta, Meyer zu Reckendorf, Minster, Petitou, Schaefer, Sinay, Takahashi, Tollefsen, Trachtenberg, Umezawa   +22 more
core   +1 more source