Results 71 to 80 of about 12,716 (277)

Trimethylphosphate as a Methylating Agent for Cross Coupling: A Slow-Release Mechanism for the Methylation of Arylboronic Esters. [PDF]

, 2018
A methyl group on an arene, despite its small size, can have a profound influence on biologically active molecules. Typical methods to form a methylarene involve strong nucleophiles or strong and often toxic electrophiles. We report a strategy for a new,
Hartwig, John F, Haydl, Alexander M, He, Zhi-Tao, Li, Haoquan, Whiteker, Gregory T   +4 more
core   +2 more sources

Short Enantioselective Total Synthesis of Tatanan A and 3-epi-Tatanan A Using Assembly-Line Synthesis [PDF]

, 2016
Short and highly stereoselective total syntheses of the sesquilignan natural product tatanan A and its C3 epimer are described. An assembly-line synthesis approach, using iterative lithiation–borylation reactions, was applied to install the three ...
Albert, Althaus, Balieu, Barsamian, Beckmann, Blakemore, Brand, Breit, Brown, Brown, Burns, Chausset-Boissarie, Crudden, Dutheuil, Evans, Gati, Glasspoole, Han, Hanessian, Hanessian, Hoppe, Hoppe, Imao, Jürjens, Lange, Lange, Larouche-Gauthier, Lee, Li, Lin, Matteson, Matteson, Matteson, Matteson, Matthew, Mazery, Millán, Negishi, Negishi, Ni, Novak, Oppolzer, Pulis, Robinson, Silva, Stymiest, Sun, ter Horst, ter Horst, Thomas, Tsai, Wang, Wang, Webster, Wipf, Woerly, Xiao, Xu, Zhou, Zhu, Zweifel   +60 more
core   +3 more sources

Transition Metal Boryl Complexes

, 2008
The article represents a review of the chemistry of transition metal complexes containing the boryl (–BX2) ligand based on the chemical literature published up to and including the calendar year 2006. A brief compendium of papers published in the year 2007 is also included.
Kays, D, Aldridge, S
openaire   +1 more source

Engineering a small HOMO-LUMO gap and intramolecular C-H borylation by diborene/anthracene orbital intercalation [PDF]

, 2017
The diborene 1 was synthesized by reduction of a mixture of 1,2-di-9-anthryl-1,2-dibromodiborane(4) (6) and trimethylphosphine with potassium graphite.
Arrowsmith, Birks, Bissinger, Bissinger, Bissinger, Bissinger, Bissinger, Braunschweig, Braunschweig, Braunschweig, Braunschweig, Braunschweig, Braunschweig, Braunschweig, Braunschweig, Braunschweig, Böhnke, Böhnke, Dabestani, García-Rodríguez, Hommer, Iwamoto, Iwamoto, Lu, Mkhalid, Moezzi, Neeve, Perepichka, Saito, Tsukahara, Wang, Wang, Wang, Yoshizawa   +33 more
core   +1 more source

Protonation‐Induced Electron Density Redistribution Facilitates Aggregation in PNNP Dicopper Hydride Complexes

Chemistry – A European Journal, EarlyView.
Copper(I) hydride complexes often exhibit diverse aggregation behavior that can profoundly influence their structure and reactivity. In this study we use a combined experimental and computational approach to identify key structural an electronic factors that govern aggregation in PNNP dicopperhydride complexes.
Roel Laurentius Maria Bienenmann, Chattawat Thangsrikeattigun, Alexandra Julia Schanz, Martin Lutz, Mu‐Hyun Baik, Daniël Laurens Johannes Broere   +5 more
wiley   +1 more source

Chelation-Assisted Substrate-Controlled Asymmetric Lithiation-Allylboration of Chiral Carbamate 1,2,4-Butanetriol Acetonide

Molecules, 2015
The lithiation of 2-(2,2-dimethyl-1,3-dioxolan-4-yl)ethyl diisopropylcarbamate (1) is achieved freely by sec-butyllithium in diethylether with high lk-diastereoselectivity: the bicyclic chelate complexes 3a and 3b are reacted with electrophiles to form ...
Adeem Mahmood, Hamad Z. Alkhathlan, Saima Parvez, Merajuddin Khan, Sohail A. Shahzad   +4 more
doaj   +1 more source

Direct Introduction of a Dimesitylboryl Group Using Base-Mediated Substitution of Aryl Halides with Silyldimesitylborane [PDF]

, 2016
The first dimesitylboryl substitution of aryl halides with a silylborane bearing a dimesitylboryl group in the presence of alkali-metal alkoxides is described.
Albrecht, Barluenga, Baron, Bonet, Bonnefon, Bose, Bose, Brown, Brown, Carlos Araujo Da Silva, Charlot, Cheng, Cheung, Cho, Del Grosso, Dewar, Dombray, Doty, Entwistle, Entwistle, Fürstner, Genaev, Gilman, Gu, Hall, Iida, Ishiyama, Ishiyama, Jia, Kaim, Kleeberg, Kleeberg, Liu, Liu, Liu, Légaré, Mazzacano, Menzel, Miyata, Mo, Morgan, Muetterties, Murata, Nagashima, Niu, Noda, Obligacion, Oestreich, Ohmura, Pintaric, Rosen, Segawa, Shimada, Uematsu, Wade, Wang, Wang, Weber, Yamaguchi, Yamaguchi, Yamamoto, Yamamoto, Yuan, Yuan, Yuan, Yuan, Zhao, Zhao, Zhu   +68 more
core   +1 more source

Fluorescent Diarylethenes With Polar Groups: Synthesis, Spectra, and Optical Microscopy Applications

Chemistry – A European Journal, EarlyView.
Blinking green and flashing red: photo‐switchable and photo‐activatable probes emitting green and red light were prepared and applied as bioconjugates in super‐resolution optical microscopy. ABSTRACT The use of photoactivatable fluorescent diarylethenes (fDAEs) in biology‐related light microscopy has been restricted by the lack of probes having freely ...
Kakishi Uno, Sven Nagorny, Ayse Aktalay, Dojin Kim, Mariano L. Bossi, Vladimir N. Belov, Stefan W. Hell   +6 more
wiley   +1 more source

Do we really need ligands in Ir-catalyzed C–H borylation?

CHIMIA
Direct borylation of C–H bonds is a privileged strategy to access versatile building blocks and valuable derivatives of complex molecules (late-stage functionalization, metabolite synthesis).
Janis M. Zakis, Simone L. Kuhn, Joanna Wencel-Delord, Tomas Smejkal   +3 more
doaj   +1 more source

Copper-Catalyzed Borylation of Cyclic Sulfamidates:Access to Enantiomerically Pure (β-and γ-Amino-alkyl)boronic Esters [PDF]

, 2016
Cyclic sulfamidates undergo borylation under copper‐catalyzed conditions using B(2)pin(2) to give enantiomerically (and diasteromerically) defined (aminoalkyl)boronic esters.
Atack, Awano, Bedford, Bose, Bower, Butler, Butler, Chemler, Decicco, Denniel, Dicko, Dudnik, Fernandez, Georgiou, Glasspoole, Harvey, Hildebrand, Imao, Ito, Iwamoto, Jana, Joshi-Pangu, Kataoka, Kim, Kirchhoff, Kleeberg, Kubota, Larouche-Gauthier, Lee, Meléndez, Molander, Ohmura, Quasdorf, Stymiest, Wang, Wehn, Yang, Yang, Yi   +38 more
core   +1 more source