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1 ders the resulting bis-bispidine macrocycles achiral.
2 tion), while the smaller serine clusters are achiral.
3 hich 2,150 (60%) were chiral and 1,423 (40%) achiral.
4 the view that peptide-lipid interactions are achiral.
5 ble by modeling the reaction with the parent achiral 1,2-bidentate additives and comparing the diaste
6 o asymmetric variant of the rearrangement of achiral 1,5-dienes has emerged, despite the successes th
8 cular polymerization of chiral (1 and 2) and achiral (3) oligo(phenylene ethynylene) tricarboxamides
10 ereocontrolling event, with the anion of the achiral acid being the structural element responsible fo
12 simplest possible combination of chiral and achiral active stresses, yet this leads to an unpreceden
13 ngeners is accomplished in 4-6 steps from an achiral acylpyruvate derivative, which, in turn, is prep
15 actones bearing two stereogenic centers from achiral aldehydes (both aromatic and aliphatic) and alky
17 s, the compounds with six and ten carbons of achiral alkoxy side chains were further subjected to stu
19 ontrols both enantioselective addition of an achiral alpha-vinyl allylboronate to aldehydes and pseud
20 tructural element in peptides is the locally achiral amide group, VCD senses the polymeric structure
22 gent catalysis is observed upon changing the achiral amino acid residue in the catalyst (at the i+2 p
24 synthesizes proteins using exclusively L- or achiral aminoacyl-tRNAs (aa-tRNAs), despite the presence
25 the two optically pure enantiomers and their achiral analog have nearly the same degree of cell prote
26 -DNA) was synthesized which could detect the achiral analyte with identical sensitivity and improved
28 tion of an intermediate pyrazinone with both achiral and chiral acrylate-derived dienophiles provides
31 ht into the conformational preferences of 14 achiral and chiral derivatives of the danicalipin A chlo
32 and repeatability were achieved by combining achiral and chiral narrow-bore columns (2.1 mm x 100 mm
33 t applied to online 2D-LC analysis involving achiral and chiral separations of complex mixtures of en
35 hose bicyclopentane units can rotate but are achiral and produce no second-order optical response.
36 by mixing the three components, i.e. the two achiral and the enantiopure comonomers, highlighting a s
38 ated as a broad proof of concept for chiral, achiral, and HILIC separations of biologically important
40 bly, the preferred helicity of the stacks of achiral AOPV3 can be retained almost completely after a
43 ion with a symmetric donor generally yields achiral architecture or a racemic mixture of chiral asse
44 ary to intuitive expectations, we utilize an achiral architecture to realize a chiral beam-splitting
45 ed and relies on the subtle influence of the achiral aryl imine substituent on the cobalt catalyst.
46 just a few proteins in interparticle gaps of achiral assemblies are responsible for the ensemble sign
51 e-type carbonyls by SmI2-H2O, convert simple achiral barbiturates in one step to hemiaminal- or enami
52 , there is no reaction in the absence of the achiral base, yet the presence of the achiral co-catalys
54 pic LCs (cholesteric LCs, cubic blue phases, achiral bent-core LCs, etc.) and lyotropic LCs (DNA LCs,
55 The nanoporous host is itself an assembly of achiral, bent-core liquid crystal molecules that phase-s
56 ion on supramolecular helices composed of an achiral benzene-1,3,5-tricarboxamide (BTA) ligand, coord
57 o be transmitted from a chiral analyte to an achiral benzotriazole dye molecule in the vicinity of a
64 ive functioning of the chiral Lewis acid and achiral Bronsted base components gives rise to in situ e
65 nyl)ethanone confirms that the effect of the achiral BTA additive is also operative under the conditi
66 ed by performing the same experiment with an achiral BTA ligand, i.e. a phosphine-functionalized BTA
67 re hugely enhanced upon addition of a second achiral BTA monomer, leading to a perfect control of the
69 one-pot organocatalytic process merging two achiral building blocks into an octacyclic structure via
70 lly pure chiral amines, starting from simple achiral building blocks, are highly desirable because su
71 ard achieving full saturation: chiral versus achiral building blocks, certain forms of conformational
72 Here we report a simple method to assemble achiral building blocks, i.e., the asymmetric colloidal
76 stereoselective cycloisomerizations using an achiral catalyst, and then explore phosphoramidite-compl
77 lies formed by BTA Ile and the intrinsically achiral catalytic rhodium catalyst, providing the hydrog
80 ercome these limitations, a generic and fast achiral-chiral heart-cutting two-dimensional (2D)-LC met
82 f catalytic asymmetric reactions and second, achiral chromatography can be used as a new, nonconventi
83 in this review clearly suggest that SDE via achiral chromatography might be expected for any given c
84 n is based on chirally perturbing the acting achiral chromophore by orthogonally tethering a single a
85 .g., those based on other highly luminescent achiral chromophores and/or chirally perturbing moieties
86 of the achiral base, yet the presence of the achiral co-catalyst gives rise to facile formation of pr
87 erintuitive strategy involving the use of an achiral co-catalyst structurally similar to the chiral c
90 fast and efficient separation of chiral and achiral compounds within seconds and also employed two-p
93 ion between petals in the cluster favors the achiral configuration, whereas out-of-plane attraction b
96 The obtained compounds can be considered as achiral conformationally restricted analogues of threoni
98 ns and rotatory strengths are calculated for achiral, conjugated hydrocarbons with the aim of determi
99 e is energetically unstable, with either the achiral conventional structure or a closed pore structur
100 The corresponding control reaction using an achiral copper catalyst gives the four possible diastere
101 to be less prone to polymorphism than their achiral counterparts and compounds able to hydrogen bond
102 l stereogenic covalent units to an otherwise achiral crown ether macrocycle bearing a luminescent 2,2
103 of D- and L-aspartic acid are exposed to an achiral Cu(111) surface, a small e.e. in the gas phase,
104 on can minimize the deleterious influence of achiral Cu-alkyl species, resulting in improved enantiom
106 ctive Cu-H elimination may be avoided and/or achiral Cu-boryl intermediates can be converted to allyl
107 ic core of C3 symmetry, was synthesized from achiral [Cu20H11{S2P(OiPr)2}9] (1H) of C(3h) symmetry by
109 with high chiral asymmetry was obtained from achiral diacetylene monomers triggered with unpolarized
110 of an amine with an allene that furnished an achiral dihydropyrrole in 22% yield, we have developed,
111 ce, inducing a screw sense preference in the achiral domain of the maleamide-linked foldamers that is
113 he structure of rabbit Ca(v) 1.1 bound to an achiral drug nifedipine reveals the general binding mode
114 ynthetic intermediates, including chiral and achiral drugs and metabolites, constitutional isomers, s
116 is remotely controlled by coordination of an achiral effector to the hexaphyrin, increasing up to 5 t
117 aphy on an achiral stationary phase using an achiral eluent, which leads to the substantial enantiome
118 lic C6 carbon of HMMF, resulting in a cyclic achiral enolate intermediate that subsequently becomes p
120 d chromatography (HPLC)) and a topologically achiral figure eight knot (18% by HPLC), competing produ
121 e/maleamide linker to couple a chiral and an achiral fragment allows the change in hydrogen bond netw
123 ntiotopic-group-selective cross-couplings of achiral geminal bis(pinacolboronates) provide a route fo
126 control over the screw sense of an otherwise achiral helical peptide foldamer formed from the achiral
128 to the design of a new protocol in which an achiral hydrogen bond donor thiourea catalyst was utiliz
129 njugated to its hydrophilic part (RF-NBD) or achiral hydrogenated and a red fluorescent dye in its hy
130 in their hydrophobic part (RF), one contains achiral hydrogenated dendrons (RH), while one denoted hy
131 ombination of chiral-racemic fluorinated and achiral hydrogenated dendrons (RHF) in its hydrophobic p
132 As shown previously, oligomers derived from achiral imidazole amino acids fold into canonical helice
134 at the plasmonic and excitonic resonances of achiral inorganic nanocrystals (NCs) capped and/or forme
135 on between orthogonal DNA enantiomers via an achiral intermediary, opening the door for "heterochiral
142 catalyst is introduced which contains solely achiral ligands and acquires its chirality entirely from
143 edral iridium(III) complex exclusively bears achiral ligands and effectively catalyzes the enantiosel
144 ysts is introduced that contains exclusively achiral ligands with the overall chirality being the res
146 he background membrane and find that, in the achiral limit, colloidal rafts acquire complex structura
148 the commercially available room-temperature achiral liquid crystal host 5CB, which also acts as a ha
149 When doped into a commercially available achiral liquid crystal host, the chiral switch was able
152 etermine experimental regimes where generic, achiral liquid crystals exhibit spontaneously broken sur
154 from right-handed to left-handed through an achiral liquid-crystal phase, whereas its reverse proces
155 taining different combinations of chiral and achiral macrocycle and axle components, the dominant inf
156 ereoisomers are possible: two S(n) symmetric achiral macrocycles and two macrocycles that are "inhere
157 way in which handedness is transmitted into achiral materials is not yet understood at the atomic le
159 starting ratios of chiral racemic (rac) and achiral meso diastereomers into stereosequenced crystall
160 preference may furthermore be induced in the achiral, meso oligoureas by formation of a 1:1 hydrogen-
161 e, we study a metasurface composed of tilted achiral meta-atoms with no spatial variation of the unit
162 , supramolecular helical rods composed of an achiral metal complex and a complementary enantiopure mo
164 rstanding of the chiroptical interactions in achiral metasurfaces, our work opens up new perspectives
166 engineering of molecular interaction(s) with achiral microporous materials for chiral separation purp
167 es, and of prochiral molecules on chiral and achiral model surfaces, especially on well-defined metal
171 report on the counterintuitive ability of an achiral molecule to suppress conformational defects in s
174 icomponent supramolecular networks formed by achiral molecules at the interface of a chiral solvent a
176 of LCs on surfaces presenting chiral versus achiral molecules provide insights into the molecular or
177 r knowledge, 20g and 23g represent the first achiral molecules that modulate selectively hUII and URP
178 Here we present complex systems built of achiral molecules that show four levels of structural ch
180 y demonstrate a new nematic order, formed by achiral molecules, in which the director follows an obli
183 ctural design to achieve CPL from inherently achiral monochromophore systems in simple organic molecu
185 sense of a dynamic polymer constructed from achiral monomer units can be disproportionately biased.
188 reaction cascade leading from two identical achiral monomers to homodimericin A is presented, and ho
189 amounts of axially chiral phosphoric acids, achiral N,N'-binaphthyl hydrazines undergo a facile [3,3
190 o catalyze the oxidative desymmetrization of achiral N,N-dialkyl piperidine-4-carboxylates to give pr
192 tic kinetic resolution of cyclic amines with achiral N-heterocyclic carbenes and chiral hydroxamic ac
196 nucleobase-peptide conjugates (NPCs), where achiral nucleobases are helically displayed on the surfa
197 -butylphosphine was found to be an effective achiral nucleophilic catalyst, effecting good yield and
198 nction in concert such that one serves as an achiral nucleophilic promoter and the other performs as
199 ither racemates, single active enantiomer or achiral) of medicines circulated on the market particula
200 -(+)-herbertene by asymmetric cyclization of achiral olefinic alkyllithium precursors in the presence
201 dimensional helical self-assembled stacks of achiral oligo(p-phenylenevinylene) ureidotriazine (AOPV3
206 acyclic quaternary carbon stereocenters from achiral or chiral racemic reactants via transition metal
208 e-pot process relies on the use of a single (achiral or chiral) iridium complex to catalyze the conco
210 and a chromophoric, CD-silent probe that is achiral or exists as a racemic mixture of rapidly interc
211 talytic enantioselective desymmetrisation of achiral or meso compounds is a powerful strategy for the
212 ic redox-relay oxidative Heck reaction using achiral or racemic acyclic alkenols and boronic acid der
213 of simple chiral amines and easily prepared achiral or racemic phosphoric acids, together with a sui
214 umerical simulations result in defect-ridden achiral patterns, containing domains of either hand, due
215 mers of alpha-aminoisobutyric acid (Aib) are achiral peptides that typically adopt 310 helical confor
216 armacokinetic properties of a novel class of achiral peptidomimetic HCV NS3 protease inhibitors.
218 crowns substituted with chiral, racemic, or achiral peripheral alkyl chains, including enantiopure R
219 romic shift of fluorescence emission for the achiral perylene moiety as a chemical junction of the BC
221 anes to carbodiimides yields both chiral and achiral phosphaguanidine boranes under ambient temperatu
223 ation of the cyclic phosphate group using an achiral phosphorus(III) reagent followed by oxidation pr
224 tunable helical superstructure or retain an achiral photoresponsive liquid crystal phase whose helic
225 chiral ((R)/(S)-BINOL, diethyl tartrate) and achiral (piperazine and trigol) linkers with varying ste
226 llographic structures are consistent with an achiral, planar Holliday-junction (HJ) structure, wherea
227 ess of intrinsically chiral NCs or arranging achiral plasmonic particles in chiral configurations.
228 s: It transfers chirality to both chiral and achiral plasmonic substrates, and it is also responsible
229 is amplification effect holds across several achiral polymer hosts and thus represents a simple and v
230 vestigate the emergence of such phenomena in achiral polymers blended with a chiral small-molecule ad
231 erization of lactides starting from a single achiral precursor and the proper choice of an achiral si
232 on of key chiral intermediates from a simple achiral precursor, 2) the utility of a key 1,2-cyclobuta
233 ternatively, from the commercially available achiral precursor, monoprotected 1,4-cyclohexanedione.
236 bserved that conglomerate crystallization of achiral precursors yielding racemate metal organic frame
237 l a transient chiral auxiliary starting from achiral precursors, which then directs diastereoselectiv
244 Pd-catalyzed DAP, in which the choice of the achiral proton source determines the stereochemical outc
246 ramatically as the conjugation length of the achiral PZn(n) component increases; mC-AFM data undersco
250 ly simple system of hard Brownian particles: achiral regular triangles confined to two dimensions.
251 ical rods are formed upon co-assembly of the achiral rhodium complex of BTA(PPh2) and the enantiopure
252 her hand, polynuclear complexes based on the achiral [Ru(2,2':6',2''-terpyridine)2](2+) motif are eas
253 ive association of a chiral molecule with an achiral self-assembled monolayer film that is spin-polar
256 pped at the inlet of a (4)D column, on which achiral separation allows precise quantification of each
259 glutathionyl-alpha-veratrylethanone) from an achiral side chain-truncated model substrate (beta-guaia
261 rsing photosensitive chiral material into an achiral soft system or covalently connecting photochromi
267 compounds, subjected to chromatography on an achiral stationary phase using an achiral eluent, which
269 ce of a two-catalyst system consisting of an achiral strong Bronsted acid (o-nitrobenzenesulfonic aci
270 nsic or pseudo-chiral (meta)surfaces have an achiral structure, yet they can give rise to circular di
271 ee approaches summed up to a total of 41,474 achiral structures that were linked to 65,957 PubChem CI
273 the formation of further structures: When an achiral subcomponent was combined with its R and S chira
276 ions are mostly highly enantioselective with achiral substrates, and due to the accelerated nature of
279 feasibility of asymmetric sulfinylations by achiral sulfinylating agents (from the perspective of Al
280 uid chromatography (UHPLC), core shell HPLC, achiral supercritical fluid chromatography (SFC) and chi
281 used to resolve thymidine enantiomers at an achiral surface with an OPV3T enantiomer as the resolvin
282 ted through the adsorption of molecules onto achiral surfaces play pivotal roles in many fields of sc
283 ane elasticity, geometrical frustration, and achiral symmetry breaking can be used to fold colloidal
284 As the concentration is lowered, breaking of achiral symmetry in the director configuration is observ
288 ted by a dual catalyst system composed of an achiral thiourea and a chiral primary aminothiourea.
289 nal groups--those that can be converted from achiral to chiral in a single step--that are accessible
291 ned with the S enantiomer only, however, the achiral unit assembled in the center of the structure, t
295 the interface: energetic preference towards achiral versus the faster growth kinetics of chiral nano
296 ganizationally chiral domains even when R is achiral, while adatom binding leads to rectangular plane
299 the above system is that the precursors are achiral; yet, the tubules are formed from helical ribbon