Journal of the Chemical Society Perkin Transactions 2 Impact Factor & Information

Publisher: Royal Society of Chemistry (Great Britain), Royal Society of Chemistry

Journal description

Perkin Transactions 2 is a major international journal containing important high quality work in the field of physical organic chemistry. It covers physicochemical aspects of organic, organometallic, bioorganic and supramolecular chemistry, including kinetic, mechanistic, structural, spectroscopic, and theoretical studies. Such topics include structure-activity relationships and physical aspects of biological processes and of the study of polymers and biological macromolecules. Times to publication, for full papers, are typically 150 days from receipt of manuscript. Perkin Transactions 2 contains a Communications section for chemists requiring urgent publication of preliminary results in all areas of physical organic chemistry. Publication times are ca. 60-80 days from receipt. In 2001 Perkin Transactions 2 will introduce reviews. These reviews will be critical overviews of recent advances in a particular area and are aimed to define the scope of the journal. Contributions will normally be commissioned by an appointed member of the Editorial Board, but the Board welcomes proposals for reviews. In such cases we request that authors submit a synopsis of the review to the Editorial Office for consideration by the Board. Alternate ISSN: 1472-779X.

Current impact factor: 0.00

Impact Factor Rankings

Additional details

5-year impact 0.00
Cited half-life 0.00
Immediacy index 0.00
Eigenfactor 0.00
Article influence 0.00
Website Perkin Transactions 2 website
Other titles Journal of the Chemical Society. Perkin transactions. 2, Perkin transactions two, Perkin transactions 2, Perkin 2, Journal of the Chemical Society
ISSN 1364-5471
OCLC 37104095
Material type Document, Periodical, Internet resource
Document type Internet Resource, Computer File, Journal / Magazine / Newspaper

Publisher details

Royal Society of Chemistry

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Pre-prints on non-commercial repositories and arXiv
    • Post-print on author's personal website
    • Author's post-print on institutional repository after 12 months from acceptance
    • Publisher's version/PDF may be used on author's personal website only
    • Publisher PDF will be supplied and may be used on author's personal website only
    • RSC will deposit the authors post-print, if appropriate in non-commercial repositories, not limited to funder's repositories after 12 months
    • Restrictions on further re-use and further distribution to be noted
  • Classification
    ​ green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: The novel N-aryl-2,5-dimethylpyrrole-3-carbaldehydes (1)–(7) have been synthesized by condensation of hexane-2,5-dione with the appropriate aniline and subsequent Vilsmeier–Haack formylation of the pyrrole ring. Diastereoisomeric association complexes of these racemic pyrroles were studied by 1H n.m.r. spectroscopy chemical shifts and the splittings induced by the optically active auxiliary compound (+)-Eu(hfbc)3. Separation of the enantiomers of (6) was achieved by liquid chromatography on triacetylcellulose. The barrier to partial rotation about the C–N bond in (6) was determined and their lower limits in (2) and (4) were estimated by variable temperature 1H n.m.r. spectroscopy.
    Journal of the Chemical Society Perkin Transactions 2 05/2013; 1(6):713-717. DOI:10.1039/P29890000713
  • Journal of the Chemical Society Perkin Transactions 2 05/2013; 1:2059-2062.
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    ABSTRACT: Moderately high diastereofacial preference has been observed in the conjugate addition of phenylmagesium bromide to the acyclic alpha-enones with an asymmetric carbon at the gamma-position (4E,6RS)-2,2,7,7-tetramethyl-6-phenyloct-4-en-3-one (1), (2E,4RS)-5,5-dimethyl-1,4-diphenylhex-2-en-1-one (2), and (4E,6RS)-2,2-dimethyl-6-phenylhept-4-en-3-one (3). The RR,SS selectivity is practically unaffected by the addition of copper(1) salts. These results are in qualitative agreement with the selectivity predicted by a Felkin-like transition state model. The method is shown to be useful for the stereoselective preparation of acyclic ketones having two chiral centres.
    Journal of the Chemical Society Perkin Transactions 2 07/2010; DOI:10.1002/chin.199127132
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    ABSTRACT: Photolysis of either 1- or 2-methoxynaphthalene (MeONp) in the presence of acetylacetone (AA) in acetonitrile and methanol leads to cycloaddition–ring opening to afford acetylacetonylnaphthalene derivatives regioselectively that may undergo the elimination of methanol. The quantum yields of MeONp disappearance (Φc) were retarded drastically by H2SO4 in the 0.001 mol dm–3 range, whereas MeONp fluorescence spectra were hardly affected under the acidic range. As singlet excited 2MeONp is known to lack interaction with H2SO4, the photocycloaddition of 2MeONp was used as a model to search for the intermediate responsible for the acid catalysis. Using ‘extended fluorescence quenching analysis’, the nonfluorescent exciplex of singlet excited 2MeONp and AA is shown, by the oxygen perturbation technique, to be formed reversibly, and to interact with H2SO4 promoting to ground state preferentially.
    Journal of the Chemical Society Perkin Transactions 2 03/2010; 12(13):2041-2045. DOI:10.1002/chin.199213105
  • Journal of the Chemical Society Perkin Transactions 2 01/2010; DOI:10.1002/chin.199304048
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    ABSTRACT: Photolysis of p-toluidides of methacrylic (1a) and cyclohex-2-enecarboxylic (1b) acids in nitrogen-saturated cyclopentane solution yields the corresponding 2-quinolones with over 90% chemoselectivity at almost complete conversion. In the presence of substoichiometric amounts (0.1 equivalents) of chiral inductor, low to moderate enantiomeric excesses (ee) are observed in the photo-product. Ephedrine gave the highest ee (37% ee for the photocyclization of 1a) in a series of 11 chiral inductors including alcohols, amines, aminoalcohols, α-amino and α-hydroxy acids. In the case of the irradiation of 1b in the presence of chiral inductors, both diastereo- and enantioselectivity were observed. A weakly absorbing transient species (λmax 400 nm) was detected following 308 nm laser excitation and was assigned to the zwitterionic enolate intermediate resulting immediately after the concerted electrocyclic ring closure. The lifetime of this intermediate is unaffected by oxygen but is quenched by trifluoroacetic acid (kq = 3.76 × 107 M−1 s−1) and ephedrine (kq = 1.19 × 107 M−1 s−1).
    Journal of the Chemical Society Perkin Transactions 2 12/2002; DOI:10.1039/B105122A
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    ABSTRACT: A series of seven alkyl-substituted benzonitriles was investigated as a model for small steric effects (van der Waals tension) excluding any steric inhibition due to resonance. The energies were calculated at a B3LYP/6-311+G(d,p) level and the gas-phase basicities of some compounds were measured by Fourier-transform ion cyclotron resonance. Substituent effects were evaluated separately for neutral molecules and protonated forms by means of isodesmic reactions, and dissected into polar and steric effects by comparing ortho and para derivatives. One or two ortho methyl groups have a relatively small steric effect operating almost exclusively in the protonated form which leads to weakened basicity. An ortho tert-butyl group exerts a strong steric effect both in the protonated and nonprotonated forms, manifested also in a rather strong distortion of geometry. The effect on basicity is then a small difference of two large values and is base strengthening. Acid–base properties are in such cases a poor measure of substituent effects and cannot be interpreted in simple terms.
    Journal of the Chemical Society Perkin Transactions 2 12/2002; DOI:10.1039/B104856M
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    ABSTRACT: 1H NMR measurements of a series of ortho-phenyl substituted 3-aryl-2-cyano-5,5-bis(alkylthio)- (3h), 3-aryl-2-cyano-5-alkylthio-5-dialkylamino- (4h, 5) and 3-aryl-2-cyano-5,5-bis(dialkylamino)penta-2,4-dienenitriles (6) with prochiral groups showed the rotation about the C-3–C-aryl bond to be hindered within the NMR timescale. The activation parameters of this atropisomerization process are discussed with respect to steric effects of substituents. The rotation barriers correlate with bond lengths and angles as determined by X-ray structure analyses.
    Journal of the Chemical Society Perkin Transactions 2 12/2002; DOI:10.1039/B107402B
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    ABSTRACT: Rate constants and activation parameters for the reactions of the 2-nitrobenzoate and 2,6-dichlorobenzoate ions with ethyl iodide have been determined in acetonitrile–methanol mixtures. The activation parameters for the two reactions indicated different responses to solvent compositions. Single-ion enthalpies of transfer for the two anions have also been determined in the same solvent mixtures and on the basis of the results single-ion enthalpies of transfer for the transition-state anion for the two reactions have also been calculated and separated into their components. By empirical analysis of the transfer enthalpies due to the “more physical” interaction for the transition-state anion, ΔtHPHYSAN→MeOH (TS−), the approach of solvent molecules to the α-carbon atom and the central carbon atom in carboxylate group in the carboxylate ion, together with the number of partial dipoles in the anion, have been suggested to account for the various transfer enthalpies.
    Journal of the Chemical Society Perkin Transactions 2 12/2002; DOI:10.1039/B108197G
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    ABSTRACT: The formation of inclusion complexes of di[(R)-3-hydroxybutanoate] (Dimer 1) and the methyl ester of di[(R)-3-hydroxybutanoate] (Dimer 2) with β-cyclodextrin (β-CD) was studied by NMR spectroscopy. The stoichiometry of the complexation was 1 ∶ 1 (host ∶ guest). Thermodynamic analysis revealed that the complex formation is enthalpically favorable, but entropically unfavorable. Dimer 1 forms hydrogen bonds with β-CD more frequently than Dimer 2 because 1 has two hydroxy groups. Conformational analysis of the 3HB (3-hydroxybutanoate) dimers in the complexes indicates that they have extended (trans) forms. In contrast, in solution without β-CD, the end of both Dimers 1 and 2 takes a sickle (gauche) shape due to formation of intermolecular hydrogen bonds.
    Journal of the Chemical Society Perkin Transactions 2 12/2002; DOI:10.1039/B104984B
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    ABSTRACT: The photoinduced reactions of 1- and 2-nitronaphthalene (1- and 2-NN) and 1-methoxy-4-nitronaphthalene (MNN) in the presence of DABCO, triethylamine (TEA) and diethylamine (DEA) in neat acetonitrile and acetonitrile water were studied by UV-vis spectroscopy and conductometry upon excitation by ns laser pulses at 354 nm. The rate constant of quenching of the nitronaphthalene triplet state by the amines is close to the diffusion-controlled limit in deoxygenated acetonitrile and smaller (k(q)approximate to2x10(9) M-1 s(-1)) in the presence of water (5 M). Electron transfer yields the nitronaphthalene radical anions which were observed as secondary transients with maxima at 390 rim. At higher TEA or DEA concentrations (>1 mM) nitronaphthalene radicals are formed in a second, delayed event by reduction of the nitronaphthalene ground state involving the alpha-aminoalkyl radicals. The nitronaphthalene radicals react via second-order termination yielding nitrosonaphthalenes and further products. The photoinduced electron transfer and subsequent radical disproportionation reactions are supported by time-resolved conductometric measurements. The mechanism of the two-step reduction reactions in the presence of TEA or DEA and the effects of amine concentration, oxygen and water are discussed.
    Journal of the Chemical Society Perkin Transactions 2 12/2002; DOI:10.1039/B107328C
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    ABSTRACT: The anthracene based fluorescent PET chemosensor 1 and the azo-dye based chemosensor 2 show high selectivity for Na+ over other alkali and alkaline-earth metal cations in the 12–300 mM concentration range in 50 ∶ 50 MeOH–H2O at pH 7.4. Chemosensor 1 shows fluorescence ‘off-on’ switching upon Na+ complexation with λFmax of 440 nm and a log βNa of 2.5 (±0.05) and a pKa of 5.3 with no concomitant changes in the absorption spectra. Conversely, 2 displays only a weak fluorescent emission at around 520–640 nm, and large changes in its absorption spectra upon addition of Na+, with a log βNa of 1.25 (±0.05) and a pKa of 3.9. In 100% water the sensitivity of 2 for Na+ was somewhat lower with a log βNa of 0.8 (±0.05). The crystal structure of 2, and its corresponding protonated form (2·H+) were obtained, showing 2 in its trans conformation with the crown ether moiety at a 75° angle to the plane of the chromophore. These results, in conjunction with 1H NMR measurements of 2, and UV–VIS measurements of the ion receptor 3, suggest that upon complexation of Na+, the 2′-methoxy group of the crown receptor participates in the Na+ complexation through chelation to the Na+ ion. We propose that this interaction forces the amine moiety of the crown ether to twist out of the plane of the chromophore, inducing loss of conjugation which gives rise to large Na+-induced spectral changes in the absorption spectra, which are most noticeable for 2.
    Journal of the Chemical Society Perkin Transactions 2 12/2002; DOI:10.1039/B106474F
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    ABSTRACT: Covering: 1996–2001
    Journal of the Chemical Society Perkin Transactions 2 12/2002; 33(1):1-22. DOI:10.1039/B100700I
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    ABSTRACT: The ion transport ability in a planar phospholipid bilayer, of two p-tert-butylcalix[4]arene-crown-5 derivatives (1, 2), a p-tert-butylcalix[5]arene ester 3, dibenzo-18-crown-6, and valinomycin have been investigated using a voltage clamp method. Membrane current measurements showed that the synthetic calixarene ionophores except for dibenzo-18-crown-6, show ion transport activities for K+ in the bilayer membranes. The order of K+ transport activities of the compounds was valinomycin >1 > 3 > 2. From the measurements of reversal potentials, the relative ion permeability across the bilayer was determined for 1, 3 and valinomycin. Both 1 and 3 showed ion transport selectivity for K+, while valinomycin showed ion transport selectivity for Rb+. Among the calixarene ionophores, compound 1 showed the highest K+ conductivity and K+/Na+ selectivity. Although the K+/Na+ selectivity of 1 is less than that of valinomycin by a factor of ca. 2, calix[4]arene-based ionophore 1 has the potential for use as a synthetic K+ carrier in phospholipid bilayer membranes.
    Journal of the Chemical Society Perkin Transactions 2 12/2002; DOI:10.1039/B106153B
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    ABSTRACT: Reaction of freshly prepared C60Cl6 (from chlorination of [60]fullerene by ICl in benzene) with methyllithium followed by hydrolysis and work-up including HPLC separation yields Cs symmetry C60Me6 (isostructural with C60Br6 and C60Cl6), together with unsymmetrical C60Me12 which is comprised of two of the motifs present in C60Me6 and must arise from the presence of a small amount of C60Cl12 in the C60Cl6. From the same reaction mixture we have also obtained C60Me5Cl [isostructural with C60Ar5Cl and C60(OR)5Cl], hydroxyepoxides [C60Me5O2OH (symmetrical), C60Me5OOH and C60Me4PhO2OH (both unsymmetrical)] and unsymmetrical C60Me5O3H (a cage-opened ketone). The results provide further information concerning the addition patterns and mechanistic features of fullerene chemistry, show that methylated, arylated, alkoxylated and halogenated [60]fullerenes are isostructural, and that C60Cl6 also contains traces of C60PhCl5. Some of the compounds give exceptionally high intensities of the C58+ fragmentation ion during EI mass spectrometry.
    Journal of the Chemical Society Perkin Transactions 2 12/2002; DOI:10.1039/B108292M
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    ABSTRACT: The equilibrium constants for the association of a fluorinated alcohol, 1,1,1,3,3,3-hexafluoropropanol with amino acid and peptide derivatives dissolved in methylene chloride were calculated. The mathematical approach for the determination of the equilibrium constant KOH is based on the decrease of the integral intensity of the OH stretching signal in the infrared spectrum. Alternatively, the decrease of the intensities of the acceptor signals can be used for the calculation of individual equilibrium constants KZ, KPeptide and KEster, for the association of the alcohol on the urethane, peptide and ester function, respectively. The equilibrium constants obtained with both approaches for a number of amino acid, di- and tripeptide derivatives will be discussed. Generally, in no case was the ester function involved in a complex formation with the fluorinated alcohol. For most examples the association constant for the peptide function was larger than for the urethane group. The investigation of the effect of the variation of the concentration on the equilibrium constant shows that up to a ratio cA0/cB0 of the initial concentrations of the alcohol, cA0, and the acceptor compound, cB0, equal to 10, no formation of 1 ∶ 2 or 1 ∶ 3 associates need to be considered.
    Journal of the Chemical Society Perkin Transactions 2 12/2002; DOI:10.1039/B008747P
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    ABSTRACT: Covering: 1990–2001.
    Journal of the Chemical Society Perkin Transactions 2 12/2002; DOI:10.1039/B100704L