Search Results - "Starý, Ivo"
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Helically Chiral Aromatics: The Synthesis of Helicenes by [2 + 2 + 2] Cycloisomerization of π‑Electron Systems
Published in Accounts of chemical research (21-01-2020)“…Conspectus Advanced molecular nanocarbons are now in the spotlight reflecting the basic discoveries of fullerenes, carbon nanotubes, and graphene. This…”
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An Ultimate Stereocontrol in Asymmetric Synthesis of Optically Pure Fully Aromatic Helicenes
Published in Journal of the American Chemical Society (08-07-2015)“…The role of the helicity of small molecules in enantioselective catalysis, molecular recognition, self-assembly, material science, biology, and nanoscience is…”
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3
From helical to planar chirality by on-surface chemistry
Published in Nature chemistry (01-03-2017)“…The chirality of molecular structures is paramount in many phenomena, including enantioselective reactions, molecular self-assembly, biological processes and…”
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Towards dielectric relaxation at a single molecule scale
Published in Scientific reports (21-02-2022)“…Dielectric relaxation lies at the heart of well-established techniques of dielectric spectroscopy essential to diverse fields of research and technology. We…”
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5
Quantum dissipation driven by electron transfer within a single molecule investigated with atomic force microscopy
Published in Nature communications (12-03-2020)“…Intramolecular charge transfer processes play an important role in many biological, chemical and physical processes including photosynthesis, redox chemical…”
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Asymmetric Synthesis of Nonracemic 2‑Amino[6]helicenes and Their Self-Assembly into Langmuir Films
Published in Journal of organic chemistry (18-05-2018)“…Alternative ways of preparing nonracemic 2-amino[6]helicene derivatives were explored. The enantioselective [2 + 2 + 2] cycloisomerization of a nonchiral…”
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Cycloiridated Helicenes as Chiral Catalysts in the Asymmetric Transfer Hydrogenation of Imines
Published in ACS catalysis (02-09-2022)“…The asymmetric synthesis of optically pure and conformationally locked oxabenzo[5]helicenes bearing pyridin-2-yl or isoquinolin-3-yl substituents and their…”
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Synthesis of Long Oxahelicenes by Polycyclization in a Flow Reactor
Published in Angewandte Chemie International Edition (15-05-2017)“…A series of oxahelicenes composed of ortho/meta‐annulated benzene/pyridine and 2H‐pyran rings were synthesized on the basis of the cobalt(I)‐mediated (or…”
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Stereocontrolled Synthesis of Chiral Helicene-Indenido ansa- and Half-Sandwich Metal Complexes and Their Use in Catalysis
Published in Angewandte Chemie International Edition (25-09-2024)“…Despite recent tremendous progress in the synthesis of nonplanar chiral aromatics, and helicenes in particular, their conversion to half-sandwich or sandwich…”
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10
Large Converse Piezoelectric Effect Measured on a Single Molecule on a Metallic Surface
Published in Journal of the American Chemical Society (24-01-2018)“…The converse piezoelectric effect is a phenomenon in which mechanical strain is generated in a material due to an applied electrical field. In this work, we…”
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Electrochemistry of Tetrathiafulvalene Ligands Assembled on the Surface of Gold Nanoparticles
Published in Molecules (Basel, Switzerland) (07-11-2022)“…The synthesis of a tetrathiafulvalene (TTF) derivative, S-[4-({4-[(2,2′-bi-1,3-dithiol-4-ylmethoxy)methyl] phenyl}ethynyl)phenyl] ethanethioate, suitable for…”
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12
Chimerical Pyrene-Based [7]Helicenes as Twisted Polycondensed Aromatics
Published in Chemistry : a European journal (08-06-2015)“…Chimerical pyrene‐based dibenzo[7]helicene rac‐1 and 2H‐pyran[7]helicene (M,R,R)‐(−)‐2, in which two pyrene subunits are fused to the…”
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Synthesis of Racemic, Diastereopure, and Enantiopure Carba- or Oxa[5]‑, [6]‑, [7]‑, and -[19]helicene (Di)thiol Derivatives
Published in Journal of organic chemistry (03-01-2020)“…A series of carba- or oxa[5]-, [6]-, [7]-, and -[19]helicene (di)thiols was prepared. The Miyazaki–Newman–Kwart rearrangement of (dimethylcarbamothioyl)oxy…”
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Asymmetric Synthesis of Diastereo‐ and Enantiopure Bioxahelicene 2,2′‐Bipyridines
Published in European journal of organic chemistry (09-10-2018)“…A versatile asymmetric synthesis of five C2 symmetric enantio‐ and diastereopure bioxa[5]‐ and bioxa[6]helicene 2,2′‐bipyridines was developed. It relied…”
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Rapid Access to Dibenzohelicenes and their Functionalized Derivatives
Published in Angewandte Chemie International Edition (16-09-2013)“…Spiraling up: Easy access to dibenzo[5]‐, dibenzo[6]‐, and dibenzo[7]helicenes (see picture) as well as their functionalized derivatives includes Sonogashira…”
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Helicenes as Chirality‐Inducing Groups in Transition‐Metal Catalysis: The First Helically Chiral Olefin Metathesis Catalyst
Published in Chemistry : a European journal (01-08-2018)“…Helical chirality is a novel enantioselectivity‐inducing property in transition‐metal‐catalyzed transformations. The principle is illustrated herein for the…”
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Aromatic Azide Transformation on the Ag(111) Surface Studied by Scanning Probe Microscopy
Published in Angewandte Chemie International Edition (18-02-2019)“…Chemical transformation of 9‐azidophenanthrene on the Ag(111) surface was studied by nc‐AFM in UHV. High‐resolution imaging supported by first‐principle…”
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Tailored Formation of N‑Doped Nanoarchitectures by Diffusion-Controlled on-Surface (Cyclo)Dehydrogenation of Heteroaromatics
Published in ACS nano (23-04-2013)“…Surface-assisted cyclodehydrogenation and dehydrogenative polymerization of polycyclic (hetero)aromatic hydrocarbons (PAH) are among the most important…”
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Straightforward Route to Helically Chiral N-Heteroaromatic Compounds: Practical Synthesis of Racemic 1,14-Diaza[5]helicene and Optically Pure 1- and 2-Aza[6]helicenes
Published in Angewandte Chemie (International ed.) (14-04-2008)“…The taming of the screw: The CoI‐catalyzed cyclotrimerization of triynes and microwave (MW) assisted aromatization with MnO2 are central to the practical…”
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On‐Surface Synthesis of Helicene Oligomers
Published in Chemistry : a European journal (06-06-2024)“…We report on‐surface synthesis of heterochiral 1D heptahelicene oligomers after deposition of a racemic heptahelicene monomer on an Au(111) surface followed by…”
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