Found 9617 Results / Page 176 of 481
The Curious Case of 2-Propyl-1H-benzimidazole in the Solid State: An Experimental and Theoretical Study
2017 / The Journal of Physical Chemistry A
2-Propyl-1H-benzimidazole (2PrBzIm) is a small molecule, commercially available, which displays a curious behavior in the solid state. 2PrBzIm, although devoid of… Continue reading The Curious Case of 2-Propyl-1H-benzimidazole in the Solid State: An Experimental and Theoretical Study
Conformational preference of a chiral terpene: vibrational circular dichroism (VCD), infrared and Raman study of S-(−)-limonene oxide
2009 / Physical Chemistry Chemical Physics
S-(−)-Limonene oxide (4-isopropenyl-1-methyl-7-oxabicyclo[4.1.0]heptane) is a secondary metabolite and an atmospheric pollutant product of oxidation of other terpenes, such as limonene and α-pinene, among others. For the first… Continue reading Conformational preference of a chiral terpene: vibrational circular dichroism (VCD), infrared and Raman study of S-(−)-limonene oxide
The chiral structure of 1H-indazoles in the solid state: a crystallographic, vibrational circular dichroism and computational study
2012 / New Journal of Chemistry
A survey of the Cambridge Crystallographic Database reveals that there are 17 1H-indazoles forming dimers (7), trimers (4) and catemers… Continue reading The chiral structure of 1H-indazoles in the solid state: a crystallographic, vibrational circular dichroism and computational study
Fenchone, Camphor, 2-Methylenefenchone and 2-Methylenecamphor: A Vibrational Circular Dichroism Study
2006 / The Journal of Physical Chemistry A
Conformational properties of chiral tobacco alkaloids by DFT calculations and vibrational circular dichroism: (−)-S-anabasine
2015 / Journal of Molecular Graphics and Modelling
A thorough DFT and MM study of the conformational landscape, molecular and electronic structures of (−)-S-anabasine is reported aimed to… Continue reading Conformational properties of chiral tobacco alkaloids by DFT calculations and vibrational circular dichroism: (−)-S-anabasine
Chiral self-assembly of enantiomerically pure (4S,7R)-campho[2,3-c]pyrazole in the solid state: a vibrational circular dichroism (VCD) and computational study
2014
IR–Raman–VCD study of R-(+)-Pulegone: Influence of the solvent
2011 / Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
Hydrogen bonding network in a chiral alcohol: (1R,2S,5R)-(−)-menthol. Conformational preference studied by IR–Raman–VCD spectroscopies and quantum chemical calculations
2013 / Structural chemistry
A study of the molecular structure of (1R,2S,5R)-(−)-menthol and the hydrogen bond networks formed by this species in solution is… Continue reading Hydrogen bonding network in a chiral alcohol: (1R,2S,5R)-(−)-menthol. Conformational preference studied by IR–Raman–VCD spectroscopies and quantum chemical calculations
Conformational landscape of a chiral crown ether: a vibrational circular dichroism spectroscopy and computational study
2012 / Tetrahedron: Asymmetry
Herein we report a study of the most stable conformers of the chiral crown ether (all-S)-(18-crown-6)-2,3,11,12-tetracarboxylic acid (18c6H4), which constitutes… Continue reading Conformational landscape of a chiral crown ether: a vibrational circular dichroism spectroscopy and computational study
Silver-Catalyzed Carbon Dioxide Incorporation and Rearrangement on Propargylic Derivatives
2011 / Bulletin of the Chemical Society of Japan
A silver/DBU catalyst system was developed for the effective synthesis of cyclic carbonate and oxazolidinone from the reaction of CO2… Continue reading Silver-Catalyzed Carbon Dioxide Incorporation and Rearrangement on Propargylic Derivatives
Incensfuran: isolation, X-ray crystal structure and absolute configuration by means of chiroptical studies in solution and solid state
2017 / Royal Society of Chemistry
A new cembrane diterpene named incensfuran (1), biogenetically derived from incensole (2), was isolated from crude extracts of the Boswellia papyrifera Hochst.… Continue reading Incensfuran: isolation, X-ray crystal structure and absolute configuration by means of chiroptical studies in solution and solid state
Self-directing chiral information in solid–solid transformation: unusual chiral-transfer without racemization from amorphous silica to crystalline silicon
2017 / Nanoscale Horizons
Constructing novel chiral inorganic nanomaterials is an emerging branch in chirality research. In this work, by employing a solid magnesiothermic… Continue reading Self-directing chiral information in solid–solid transformation: unusual chiral-transfer without racemization from amorphous silica to crystalline silicon
Unusual chirality transfer from silica to metallic nanoparticles with formation of distorted atomic array in crystal lattice structure
2019 / Nanoscale Advances
Transfer of chirality from chiral organic molecules to metallic nanoparticles (NPs) is a very attractive field of research and some… Continue reading Unusual chirality transfer from silica to metallic nanoparticles with formation of distorted atomic array in crystal lattice structure
(R)-(−)-Aloesaponol III 8-Methyl Ether from Eremurus persicus: A Novel Compound against Leishmaniosis
2017 / Molecules
Leishmaniosis is a neglected tropical disease which affects several millions of people worldwide. The current drug therapies are expensive and… Continue reading (R)-(−)-Aloesaponol III 8-Methyl Ether from Eremurus persicus: A Novel Compound against Leishmaniosis
Unexpected “Hammerlike Liquid” to Pulverize Silica Powders to Stable Sols and Its Application in the Preparation of Sub-10 nm SiO2 Hybrid Nanoparticles with Chirality
2017 / ACS Omega
Silane coupling agents are well-known as surface modifiers for various kinds of silica (SiO2). However, in the present research, it… Continue reading Unexpected “Hammerlike Liquid” to Pulverize Silica Powders to Stable Sols and Its Application in the Preparation of Sub-10 nm SiO2 Hybrid Nanoparticles with Chirality
Colletopyrandione, a new phytotoxic tetrasubstituted indolylidenepyran-2,4-dione, and colletochlorins G and H, new tetrasubstituted chroman- and isochroman-3,5-diols isolated from Colletotrichum higginsianum
2017 / Tetrahedron
A new tetrasubstituted indolylidenepyrandione named colletopyrandione (1), together with a tetrasubstituted chroman- and a tetrasubstituted isocroman-3,5-diol, named colletochlorins G and… Continue reading Colletopyrandione, a new phytotoxic tetrasubstituted indolylidenepyran-2,4-dione, and colletochlorins G and H, new tetrasubstituted chroman- and isochroman-3,5-diols isolated from Colletotrichum higginsianum
Asymmetric Diels–Alder Reaction of α‐Substituted and β,β‐Disubstituted α,β‐Enals via Diarylprolinol Silyl Ether for the Construction of All‐Carbon Quaternary Stereocenters
2016 / Chemistry a European Journal
The asymmetric Diels–Alder reaction of α‐substituted acrolein proceeds in the presence of the trifluoroacetic acid salt of trifluoromethyl‐substituted diarylprolinol silyl… Continue reading Asymmetric Diels–Alder Reaction of α‐Substituted and β,β‐Disubstituted α,β‐Enals via Diarylprolinol Silyl Ether for the Construction of All‐Carbon Quaternary Stereocenters
Solid‐State Properties and Vibrational Circular Dichroism Spectroscopy in Solution of Hybrid Foldamers Stereoisomeric Mixtures
2013 / ChemPlusChem
Upon slow evaporation of a 1:1 diastereoisomeric mixture of Boc‐(L‐Phe‐L‐Oxd)2‐OBn (1; Boc=tert‐butyloxycarbonyl; L‐Oxd=trans‐(4S,5R)‐4‐carboxy 5‐methyloxazolidin‐2‐one, Bn=benzyloxycarbonyl) and Boc‐L‐Phe‐L‐Oxd‐D‐Phe‐L‐Oxd‐OBn (2) in methyl tert‐butyl ether,… Continue reading Solid‐State Properties and Vibrational Circular Dichroism Spectroscopy in Solution of Hybrid Foldamers Stereoisomeric Mixtures
The Vibrational Circular Dichroism Pattern of the ν(C=O) Bands in Isoindolinones
2018 / ChemPhysChem
The IR and vibrational circular dichroism (VCD) spectra of both enantiomers of Me‐, iPr‐, nBu‐, Ph‐, and CH2Ph‐substituted isoindolinones in solution and… Continue reading The Vibrational Circular Dichroism Pattern of the ν(C=O) Bands in Isoindolinones