Hydroxyalkylation of benzene derivatives by benzaldehyde in the presence of acid zeolites

A photocatalytic system for the dearomative hydroarylation of benzene derivatives has been developed. Using a combination of an organic photoredox catalyst and an amine reductant, this process operates through a reductive radical-polar crossover mechanism where aryl halide reduction triggers a regioselective cyclization event, giving rise to a range of complex spirocyclic cyclohexadienes. This light-driven protocol functions at room temperature in a green solvent system (aq. MeCN), without the need for precious metal-based catalysts or reagents, or the generation of stoichiometric metal byproducts.

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Toxicity of Para-Chloro Substituted Benzene Derivatives in the Microtox™ Test

Water Quality Research Journal ◽

10.2166/wqrj.1985.016 ◽

1985 ◽

Vol 20 (2) ◽

pp. 36-43 ◽

Cited By ~ 9

Author(s):

Klaus L.E. Kaiser ◽

Juan M. Ribo ◽

Brian M. Zaruk

Keyword(s):

General Formula ◽

Functional Group ◽

Structural Parameters ◽

Systematic Investigation ◽

Photobacterium Phosphoreum ◽

Benzene Derivatives ◽

Quantitative Structure ◽

Chlorinated Benzenes ◽

Chloro Derivatives ◽

Derivatives Of

Abstract This paper gives the results of part of a systematic investigation into contaminant toxicity to Photobacterium phosphoreum in the Microtox™ test. Reported are the toxicity values for 39 para-chloro substituted benzene derivatives of the general formula l-Cl-C6h4-4-X=CH2CH(NH2)COOH, F, SO2NH2, OCH2COOH, CH2COOH, CONHNH2, NHCOCH3, CONH2, CH=CHCOOH, SeOOH, CH2NH2, CH2CH2NH2, NO2, H, CF3, CHO, CH2OH, OH, CH3, CCl3, COCH3, COOH, NH2, SO2C6H5, Cl, CH2COCH3, COCl, CN, OCH3, NCO, NHCH3, I, COC6H5, CH2Cl, SH, CH2SH, NCS, CH2CN and SO2C6H4Cl. Except for the last compound, whose solubility is below the required concentration, the toxicities increase in the presented order with a total range of more than three orders of magnitude. The data are discussed in terms of quantitative structure-toxicity correlations with compound-specific structural parameters. In combination with a previously developed submodel on chlorinated benzenes, phenols, nitrobenzenes and anilines, the observed relationships allow the prediction of the toxicity of some 780 possible chloro derivatives of the general formula C6H5-nClnX, where n=<5 and X is a functional group as listed above.

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NMR-spektroskopische Untersuchungen über zwischenmolekulare Wechselwirkungen bei Benzolderivaten und Pyrrol / NMR-Spectroscopic Investigation of the Intermolecular Reactions of Benzene Derivatives and Pyrrole

Zeitschrift für Naturforschung B ◽

10.1515/znb-1969-1101 ◽

1969 ◽

Vol 24 (11) ◽

pp. 1365-1370 ◽

Cited By ~ 10

Author(s):

H.-H. Perkampus ◽

U. Krüger ◽

W. Krüger

Keyword(s):

Dipole Moment ◽

Temperature Dependence ◽

Aromatic Compounds ◽

Spectroscopic Investigation ◽

Chemical Shifts ◽

Benzene Derivatives ◽

Intermolecular Reactions ◽

Proton Chemical Shifts

The proton chemical shifts of aromatic compounds are strongly concentration dependent. Moreever, for molecules with a dipole moment a temperature dependence of the proton chemical shifts is observed. For hemellitone, p-methylanisole, o-chlortoluene, p-chlortoluene, pyrrole and N-methyl-pyrrole the enthalpies of a dipole-dipole association between -0,7 and -1,8 Kcal could be estimated by NMR measurements combined with the temperature dependence in the whole range of the molefraction (0 → 1).

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Effect of Benzene Derivatives as Guest Molecules on Semiconductor Properties of MOF‐199

ChemistrySelect ◽

10.1002/slct.202004528 ◽

2021 ◽

Vol 6 (3) ◽

pp. 425-429

Author(s):

Haleemathul Zahadiya ◽

Ruwan P. Wijesundera ◽

Champika V. Hettiarachchi ◽

Ishanie R. Perera

Keyword(s):

Benzene Derivatives ◽

Guest Molecules ◽

Semiconductor Properties

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ChemInform Abstract: ANODIC FLUOROALKYLATION OF BENZENE DERIVATIVES

Chemischer Informationsdienst ◽

10.1002/chin.197831107 ◽

1978 ◽

Vol 9 (31) ◽

Author(s):

V. A. GRINBERG ◽

V. R. POLISHCHUK ◽

L. S. GERMAN ◽

L. S. KANEVSKII ◽

YU. B. VASIL'EV

Keyword(s):

Benzene Derivatives

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A Reversed-phase HPLC Study of the Complexation of Benzene Derivatives Guest Molecules with 5,17-bis(N-Tolyliminomethyl)-25,27-dipropoxycalix[4]arene in Acetonitrile–Water Solution

Journal of Chemical Research ◽

10.1177/174751989902300136 ◽

1999 ◽

Vol 23 (1) ◽

pp. 60-61

Author(s):

O. I. Kalchenko ◽

A. V. Solovyov ◽

J. Lipkowski ◽

V. I. Kalchenko

Keyword(s):

Stability Constants ◽

Water Solution ◽

Reversed Phase ◽

Benzene Derivatives ◽

Reversed Phase Hplc ◽

Guest Molecules ◽

Hplc Study

Stability constants of the host–guest complexes of 5,17-bis( N-tolyliminomethyl)-25,27-dipropoxycalix[4]arene with benzene derivatives were determined by reversed-phase HPLC in acetonitrile–water solution.

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