Search Results - "Klausen, S"

Chiral Thioureas Promote Enantioselective Pictet–Spengler Cyclization by Stabilizing Every Intermediate and Transition State in the Carboxylic Acid-Catalyzed Reaction by Klausen, Rebekka S, Kennedy, C. Rose, Hyde, Alan M, Jacobsen, Eric N

“…An investigation of the mechanism of benzoic acid/thiourea co-catalysis in the asymmetric Pictet–Spengler reaction is reported. Kinetic, computational, and…”
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Weak Brønsted Acid−Thiourea Co-catalysis: Enantioselective, Catalytic Protio-Pictet−Spengler Reactions by Klausen, Rebekka S, Jacobsen, Eric N

“…The development of one-pot imine formation and asymmetric Pictet−Spengler reactions cocatalyzed by a chiral thiourea and benzoic acid is described. Optically…”
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Predictable tuning of protein expression in bacteria by Bonde, Mads T, Pedersen, Margit, Klausen, Michael S, Jensen, Sheila I, Wulff, Tune, Harrison, Scott, Nielsen, Alex T, Herrgård, Markus J, Sommer, Morten O A

“…The free EMOPEC web tool enables precise tuning of bacterial protein expression on the basis of small changes to the Shine-Dalgarno sequence; oligos can be…”
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Thiourea-Catalyzed Enantioselective Iso-Pictet–Spengler Reactions by Lee, Yunmi, Klausen, Rebekka S, Jacobsen, Eric N

“…A one-pot condensation of isotryptamines and aldehydes that affords enantiomerically enriched 4-substituted tetrahydro-γ-carbolines is reported. The reaction…”
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Syndioselective Polymerization of a BN Aromatic Vinyl Monomer by Mendis, Shehani N, Zhou, Tiffany, Klausen, Rebekka S

“…A new synthetic platform accessing stereoregular polar polyolefins is introduced. We showcase the stability of aromatic azaborine derivatives by demonstrating…”
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Organoborane Strategy for Polymers Bearing Lactone, Ester, and Alcohol Functionality by Ji, Yuyang, Zhou, Tiffany, van de Wouw, Heidi L, Klausen, Rebekka S

“…Vinyl alcohol–methacrylatecopolymers have intriguing functionally rich structures but are synthetically inaccessible from vinyl acetate, the traditional…”
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Directional Building Blocks Determine Linear and Cyclic Silicon Architectures by Marro, Eric A, Press, Eric M, Siegler, Maxime A, Klausen, Rebekka S

“…Silicon nanomaterials combine earth abundance and biodegradability with exceptional electronic properties. Strategic synthesis promises access to novel…”
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A BN Aromatic Ring Strategy for Tunable Hydroxy Content in Polystyrene by van de Wouw, Heidi L., Lee, Jae Young, Awuyah, Elorm C., Klausen, Rebekka S.

“…BN 2‐vinylnaphthalene, a BN aromatic vinyl monomer, is copolymerized with styrene under free radical conditions. Oxidation yields styrene–vinyl alcohol (SVA)…”
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Impact of skin biopsy practices: A comprehensive nationwide study on skin cancer and melanoma biopsies by Nervil, G G, Vestergaard, T, Klausen, S, Tolsgaard, M G, Ternov, N K, Hölmich, L R

“…Due to a multitude of factors, skin cancer incidence is increasing and challenges medical professionals in biopsy decision-making. While skin cancer may have a…”
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An Organoborane Vinyl Monomer with Styrene-like Radical Reactivity: Reactivity Ratios and Role of Aromaticity by van de Wouw, Heidi L, Awuyah, Elorm C, Baris, Jodie I, Klausen, Rebekka S

“…BN 2-vinylnaphthalene (BN2VN) is a novel precursor to vinyl alcohol copolymers via sodium hydroperoxide oxidation. We show that the unusual aromaticity of the…”
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2D Oligosilyl Metal–Organic Frameworks as Multi‐state Switchable Materials by Burns, David A., Press, Eric M., Siegler, M. A., Klausen, Rebekka S., Thoi, V. Sara

“…We report the synthesis of a set of 2D metal–organic frameworks (MOFs) constructed with organosilicon‐based linkers. These oligosilyl MOFs feature linear…”
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Synthesis of a Fragment of Crystalline Silicon: Poly(Cyclosilane) by Press, Eric M., Marro, Eric A., Surampudi, Sravan K., Siegler, Maxime A., Tang, Joel A., Klausen, Rebekka S.

“…We report a strategic synthesis of poly(cyclosilane), a well‐defined polymer inspired by crystalline silicon. The synthetic strategy relies on the design of a…”
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Low-Energy Electronic Transition in SiB Rings by Purkait, Tapas K, Press, Eric M, Marro, Eric A, Siegler, Maxime A, Klausen, Rebekka S

“…Five- and six-membered rings containing Si–B bonds were synthesized by salt metathesis of magnesium disilanides with tetramethylpiperidinyldichloroborane…”
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A Greener Vision for P–C Bond Formation by Wentz, Kelsie E., Klausen, Rebekka S.

“…A wide variety of alkynyl phosphonates are prepared mechanochemically from sustainably sourced condensed phosphates, avoiding the use of hazardous white…”
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Photoinduced Charge Separation in Molecular Silicon by Zhou, Jiawang, Surampudi, Sravan K., Bragg, Arthur E., Klausen, Rebekka S.

“…Interest in molecular silicon semiconductors arises from the properties shared with bulk silicon like earth abundance and the unique architectures accessible…”
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Cooperative Noncovalent Interactions Induce Ion Pair Separation in Diphenylsilanides by Marro, Eric A., Press, Eric M., Purkait, Tapas K., Jimenez, Daniel, Siegler, Maxime A., Klausen, Rebekka S.

“…This crystallographic and computational study describes an unusual potassium silanide structure. A contact ion pair is expected in the solid state between…”
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Silicon Ring Strain Creates High-Conductance Pathways in Single-Molecule Circuits by Su, Timothy A, Widawsky, Jonathan R, Li, Haixing, Klausen, Rebekka S, Leighton, James L, Steigerwald, Michael L, Venkataraman, Latha, Nuckolls, Colin

“…Here we demonstrate for the first time that strained silanes couple directly to gold electrodes in break-junction conductance measurements. We find that…”
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Using a clinicopathologic and gene expression model to predict prognosis in stage I-II primary cutaneous melanoma: a multicenter Danish cohort study by Weitemeyer, M.B.-M., Helvind, N.M., Klausen, S., Clasen-Linde, E., Schmidt, G., Chakera, A.H., Hölmich, L.R.

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Increased carrier mobility in end-functionalized oligosilanes by Surampudi, S, Yeh, M-L, Siegler, M A, Hardigree, J F Martinez, Kasl, T A, Katz, H E, Klausen, R S

“…We show that a class of oligosilane-arene σ, π-hybrid materials exhibits distinct and enhanced solid-state electronic properties relative to its parent…”
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Opposites Attract: Organic Charge Transfer Salts by van de Wouw, Heidi L, Chamorro, Juan, Quintero, Michael, Klausen, Rebekka S

“…A laboratory experiment is described that introduces second-year undergraduate organic chemistry students to organic electronic materials. The discovery of…”
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