Results 81 to 90 of about 1,765 (123)

ChemInform Abstract: DERIVATIVES OF 1,3‐BENZODIOXOLES. 49. PREPARATION AND REACTIONS OF SUBSTITUTED 1,3‐BENZODIOXOLE‐4,5‐QUINONES

Chemischer Informationsdienst, 1983
AbstractEs wird versucht, die Diole (I) (Darstellungen beschrieben) in die entsprechenden Dione zu überführen.
F. DALLACKER, P. KRAMP, W. COERVER
openaire   +1 more source

Smooth Photocatalytic Preparation of 2‐Substituted 1,3‐Benzodioxoles

Chemistry – A European Journal, 2010
AbstractA mild and general method for the synthesis of potentially bioactive 2‐substituted‐1,3‐benzodioxoles is presented. This is based on the photocatalyzed activation of methylene hydrogen atoms in the presence of tetrabutylammonium decatungstate (TBADT).
RAVELLI, DAVIDE, ALBINI, ANGELO, FAGNONI, MAURIZIO   +2 more
openaire   +2 more sources

(+)-Tert-butyl-1,3-benzodioxole-4-carboxylic acid: Fluorescent chiral carboxylic acid with a 1,3-benzodioxole skeleton

Tetrahedron: Asymmetry, 1993
Abstract A new chiral carboxylic acid was prepared from catechol via acetal formation with trimethylacetaldehyde and trimethylsilyl chloride followed by carbonation with n -BuLi and solid CO ...
Yoshihiro Nishida, Masayuki Abe, Hiroshi Ohrui, Hiroshi Meguro   +3 more
openaire   +1 more source

Influence of structure of benzodioxole derivatives on photoinitiation efficiency of benzophenone

Photochemical & Photobiological Sciences, 2012
To investigate the influence of the substituents at the 5-position of the phenyl ring of benzodioxole on the reactivity of a benzophenone (BP)/benzodioxole-based photoinitiator system, three benzodioxole-based compounds were synthesized in this study. The structure was characterized by FT-IR, (1)H NMR and (13)C NMR.
Jinliang, Yang, Fei, Xu, Suqing, Shi, Jun, Nie   +3 more
openaire   +2 more sources

Chair conformation and barrier to ring puckering in 1,3-benzodioxole

Molecular Physics, 1993
The rotational spectrum of 1,3-benzodioxole has been investigated in the frequency range 30-40 GHz. Six vibrational satellites have been observed and assigned to excited states of the puckering and twisting modes of the five-membered ring moiety. On the basis of the observed zigzag behaviour of the rotational constants upon vibrational excitation, the ...
Caminati, W., Melandri, S., Corbelli, G., Favero, L.B., Meyer, R.   +4 more
openaire   +3 more sources

Reminiscence of benzene in the spectroscopy of 1,3-benzodioxole: A computational study

Chemical Physics, 2006
Abstract We present a theoretical investigation on the structure and spectroscopy of 1,3-benzodioxole. Ground state structure and vibrational frequencies are computed at several levels of theory ranging from density functional theory (DFT) to complete active space self consistent field (CASSCF) and are employed to provide a coherent assignment of IR ...
E. Emanuele, NEGRI, FABRIZIA, ORLANDI, GIORGIO   +2 more
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(Η6-Arene)Tricarbonylchromium Complexes of 1,3-Benzodioxoles

Journal of Organometallic Chemistry, 2023
Alexander N. Artemov, Anna S. Kolesova, Elena V. Sazonova, Polina S. Ushakova, Andrei Yu. Shishkin, Nikolay V. Somov, Yulia B. Malysheva, Ivan D. Grishin, Natalia Yu. Grishina   +8 more
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Benzodioxoles, naphthodioxins and dibenzodioxepins

Journal of Heterocyclic Chemistry, 1967
C. M. Silcox Yoder, J. J. Zuckerman
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Orientation in the 1,3-Benzodioxole Series

Journal of the American Chemical Society, 1945
Richard T. Arnold, Newman Bortnick
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Photoredox radical/polar crossover enables C–H gem-difunctionalization of 1,3-benzodioxoles for the synthesis of monofluorocyclohexenes

Chemical Science, 2023
Lei Zhou
exaly