Results 151 to 160 of about 184,229 (279)

Coordination‐Driven Direct C─H Metalation of N‐Heterocycles With a Superbasic Co(II) Amide Co(TMP)2

Angewandte Chemie, EarlyView.
By enabling regioselectivities that are inaccessible with conventional bases, this study introduces a Co(II) amide platform for the deprotonative C─H metalation of sensitive N‐heterocycles. Subsequent interception of the resulting Co(II) intermediates with external oxidants affords a family of sterically congested, TMP‐substituted heterocycles via C─N ...
Na Jin, Manting Mu, Max García‐Melchor, Eva Hevia   +3 more
wiley   +2 more sources

Infrared protein crystallography [PDF]

, 2011
Ravelli, Raimond B. G., Sage, J. Timothy, McGeehan, John, Zhang, Yunbin, Van Thor, Jasper J., Weik, Martin   +5 more
core   +1 more source

What is X-ray Crystallography? [PDF]

This site, maintained by the University of Bristol, contains a short explanation of X-ray crystallography. Topics covered include a definition of X-ray crystallography, an example of its applications, and the stages of crystal structure determination.
David Edmonds
core  

Borylcyclopropanes: Synthetic Strategies and Applications

Angewandte Chemie, EarlyView.
Borylcyclopropanes (cyclopropanes bearing a boron substituent) sit at the intersection of two privileged frameworks in synthesis. This review provides the first exhaustive survey of their chemistry, spanning metal–carbene, nucleophilic cyclization, radical, hydroboration, and C─H activation routes, and documenting applications in medicinal chemistry ...
Aiza A. Butt, Joseph M. Ready
wiley   +2 more sources

Organocatalytic Enantioselective Addition of Malonates to Cyclic Imines: A Short Total Synthesis of Tetraponerine T‐1

Angewandte Chemie, EarlyView.
A stereoselective functionalization method of cyclic imines under mild organocatalytic conditions was developed. Bifunctional cinchona alkaloid catalysts combined with carefully optimized reaction conditions to suppress background reactivity enabled highly enantio‐ and diastereoselective addition reactions of malonates to cyclic imines.
Frederic Kölblin, Helma Wennemers
wiley   +2 more sources

A Multi‐Stimuli Transformational Network of Benzil‐Based Pd(II) Assemblies

Angewandte Chemie, EarlyView.
Incorporation of a flexible and chemically reactive benzil backbone into the ligand structure allows it to access multiple conformations, enabling the formation of diverse homo‐ and heteroleptic Pd(II) assemblies with different nuclearities and topologies.
Zhiwei Zeng, A. Priscila Gia, Alexander S. Mikherdov, Mert Acar, Björn Schmidt, Guido H. Clever   +5 more
wiley   +2 more sources

Dual Activation of H2 and CO2 by a Pincer‐Type Ni–Zn Heterobimetallic Complex

Angewandte Chemie, EarlyView.
A bimetallic Ni−Zn complex performs sequential activations of H2 (1 equiv) and CO2 (2 equiv). This bimetallic cooperativity is attributed to the weak Lewis acidic nature of Zn(II), which promotes fluxional ligand binding. Namely, an X‐type ligand at Ni, where X is hydride or formate, toggles between two different binding modes: bridging Zn(μ‐X)Ni and ...
Krishnendu Dey, Matthias Borowski, Gregor Schnakenburg, Connie C. Lu   +3 more
wiley   +2 more sources

The evolving role of structural biology in pharma: integration of X-ray crystallography, cryo-electron microscopy and beyond. [PDF]

Acta Crystallogr D Struct Biol
Chrencik JE, Su HP, Gomez Llorente Y, Palte RL, Klein DJ, Hayes RP, Antine SP, Asmar-Rovira GA, Bertoletti N, Byrne NJ, Carroll BL, Cordeiro CD, Curfman K, Dutko J, Eddins MJ, Fischmann T, Govindarajan B, Hecksel CW, Ho T, Hollenstein K, Hong MR, Hruza A, Ishchenko A, Jaime-Garza M, Jaremko MJ, Knox HL, Kostas J, Krishnamurthy H, Manolaridis I, Noland CL, Partridge AT, Patel SB, Reichert P, Reid JC, Felisberto-Rodrigues C, Shintre CA, Shipman JM, Tamilselvan E, Walker ME, Walker SN, Wang R, Wright KM, Yen TJ, Yoo BK, Gabelli SB.   +44 more
europepmc   +1 more source

A Blue Emissive Heavy Atom‐Free Multiresonant Thermally Activated Delayed Fluorescent Emitter Shows Ultra‐Fast Reverse Intersystem Crossing

Angewandte Chemie, EarlyView.
The extended π‐system and low‐lying n‐π∗ transition endow DDOBDiKTa with a synergistic combination of strong spin‐orbit coupling, small reorganization energy and small ΔEST, enabling this blue boron‐nitrogen‐carbonyl hybrid emitter to achieve a fast kRISC of 6.34 × 106 s−1 together with OLEDs showing small efficiency roll‐off, with EQEmax/EQE10000 of ...
Wenrui Wang, Hassan Hafeez, Sen Wu, Aidan P. McKay, David B. Cordes, Ifor D. W. Samuel, Eli Zysman‐Colman   +6 more
wiley   +2 more sources

Pinpointing Protein Crystal Structures over a Broad Temperature Range Using Hydrophobic Protection. [PDF]

ACS Omega
Ribeiro FS, Lima LMTR.
europepmc   +1 more source