Facile access to pyridinium-based bent aromatic amphiphiles: nonionic surface modification of nanocarbons in water

• Lorenzo Catti,
• Shinji Aoyama and
• Michito Yoshizawa

Beilstein J. Org. Chem. 2024, 20, 32–40, doi:10.3762/bjoc.20.5

• through the template effect of the hydrophobic nanocarbon guests (Table 2). Moreover, aromatic micelle (PA-Im)n and its host–guest composite (PA-Im)n·(C60)m were anticipated to provide pH-dependent ZPs via imidazole-based protonation/deprotonation. Micelle (PA-Im)n showed a significantly higher ZP (41.7

Synthesis of esters of diaminotruxillic bis-amino acids by Pd-mediated photocycloaddition of analogs of the Kaede protein chromophore

• Esteban P. Urriolabeitia,
• Pablo Sánchez,
• Alexandra Pop,
• Cristian Silvestru,
• Eduardo Laga,
• Ana I. Jiménez and
• Carlos Cativiela

Beilstein J. Org. Chem. 2020, 16, 1111–1123, doi:10.3762/bjoc.16.98

• of the ε-isomer in 4: (1) the initial (Z)-configuration of the oxazolones 2 is retained during the C–H bond activation step to give 3; (2) the relative transoid arrangement in 3 establishes the 1,3-head-to-tail coupling of the exocyclic C=C bonds; (3) the template effect of the Pd2(O2CCF3)2 moiety

Mechanochemistry of supramolecules

• Anima Bose and
• Prasenjit Mal

Beilstein J. Org. Chem. 2019, 15, 881–900, doi:10.3762/bjoc.15.86

• ][42]. Review Self-assembly During a metal-directed self-assembly process, the coordination geometry and coordination number at the metal center plays a central role in creating a self-assembled system. In 1962, Busch and coworker first demonstrated the concept of the template effect by choosing a

• interactions of alternating hydrophilic and hydrophobic units in the peptide chains played the vital role in the system. Friščić and Aav with co-workers reported the first solvent-free mechanochemical synthesis of hemicucurbiturils [90] through the anion template effect of dynamic covalent chemistry [47][91

Enzyme-free genetic copying of DNA and RNA sequences

• Marilyne Sosson and
• Clemens Richert

Beilstein J. Org. Chem. 2018, 14, 603–617, doi:10.3762/bjoc.14.47

• successful modeling of the reaction, the strength of the template effect, the inhibitory effect of spent monomers, and the rate constants of the chemical steps have to be determined experimentally. While challenges remain for the high fidelity copying of long stretches of DNA or RNA, the available data

• reaction that was made since our earlier account on the topic [22]. Other reviews that cover enzyme-free copying exist, and the reader is directed to these papers for a more in-depth treatment of issues only touched upon in our account [13][23][24][25]. Review Template effect and sequence dependence One

• factor that significantly affects whether an enzyme-free primer extension reaction occurs in high yield or not is the strength of the template effect. Unlike the reactions that are catalyzed by polymerases, purely chemical primer extension reactions are not facilitated by the active sites of enzymes

Intramolecular glycosylation

• Xiao G. Jia and
• Alexei V. Demchenko

Beilstein J. Org. Chem. 2017, 13, 2028–2048, doi:10.3762/bjoc.13.201

• . These reactions produced the corresponding disaccharide 52 in 76–81% yields and complete α-stereoselectivity. Conversely, if linker L1 is longer than L2, glutaryl vs succinoyl, respectively, the stereoselectivity is lost (α/β = 2.8:1). Interestingly, the template effect is stronger than that of a

Molecular ordering at electrified interfaces: Template and potential effects

• Thanh Hai Phan and
• Klaus Wandelt

Beilstein J. Org. Chem. 2014, 10, 2243–2254, doi:10.3762/bjoc.10.233

• effects, in the structure formation process of DBV cations on these modified Cu electrode surfaces. Keywords: cyclic voltammogram; scanning tunneling microscopy; self-assembly; template effect; viologen; Introduction The precise control of the self-organization of molecular layers on either conducting

• structure of the adsorbed DBV2+ overlayer. This hints to a template effect rather than a mere self-assembly of the molecular dications on the Cl/Cu(111) surface. Again, based on a superposition of panels 5a and 5b, a precise determination of the DBV2+ unit cell with respect to the c(p × √3)-Cl phase

• also in the light of the corresponding findings for the same species on a c(2 × 2)Cl/Cu(100) electrode surface clearly points to a dominance of electrostatic adsorbate–substrate interactions, i.e., a strong template effect of both substrates on the self-organization of these organic surface films

Fifty years of oxacalix[3]arenes: A review

• Kevin Cottet,
• Paula M. Marcos and
• Peter J. Cragg

Beilstein J. Org. Chem. 2012, 8, 201–226, doi:10.3762/bjoc.8.22

• found to be necessary to remove the ethanol stabilizer and to aid deprotection. Yields were up to 50%, and, interestingly, there was no template effect from any alkali metals. An analogous strategy was developed by Georghiou in 2001 to prepare asymmetric oxacalix[3]naphthalene derivatives [20], and this

• , derivatives containing carbonyl groups (ester, acid, amide and ketone) and heteroatoms, such as nitrogen and phosphorous, have been obtained. In 1993, Shinkai et al. [29] reported the synthesis of the first ethyl ester derivative 12a. In the belief that the alkali-metal template effect would lead

• suggests a template effect for both K+ and Cs+ that occurs whether an amide or ester is formed, and a function for Na+ beyond that of a mere template. One consequence of this work is that the preferred route to C3 symmetric cone derivatives is through tris(amide) derivative 17a, which can readily be

Highly substituted benzannulated cyclooctanol derivatives by samarium diiodide-induced cyclizations

• Jakub Saadi,
• Irene Brüdgam and
• Hans-Ulrich Reissig

Beilstein J. Org. Chem. 2010, 6, 1229–1245, doi:10.3762/bjoc.6.141

• cyclization. Since samarium(III) is very oxophilic, it is possible that the samariumoxy group coordinates tert-butanol, which is then a more acidic proton source (intermediates B and C, Scheme 6). This template effect would then be responsible for the stereoselective protonation governed by the samariumoxy