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3 results on '"Peeters, Luc D."'

1. On the structure and vibrational spectrum of tetrabromothiophene

Author

Blockhuys, Frank, Rousseau, Bart, Peeters, Luc D., Alsenoy, Christiaan Van, Geise, Herman J., Kataeva, Olga N., Veken, Benjamin Van der, and Herrebout, Wouter A.

Subjects
Raman spectroscopy -- Usage, Thiophene -- Chemical properties, Chemicals, plastics and rubber industries
Abstract

Gas phase structure and vibrational spectrum of tetrabromothiophene were calculated by ab initio methods. The unusual fit proved from solid phase Raman spectrum and the compounds' solidification into very small, irregularly arranged crystallites is correlated to the screening of the thiophene moiety by the bromine atoms.

Published
2000

2. Copper-(i) catalyzed formation of 3-methoxy-2,5-dimethylthiophene and 3,4-dimethoxy-2,5-dimethylthiophene

Author

Peeters, Luc D., Jacobs, Sven G., Eevers, Walter, and Geise, Herman J.

Subjects
Chemistry
Abstract

3-Methoxy-2,5-dimethylthiophene and 3,4-dimethoxy-2,5-dimethylthiophene have been prepared from 3,4-dibromo-2,5-dimethylthiophene and sodium methoxide using Cu(I)Br as a catalyst. The influence of some cosolvents and reaction temperature is investigated. Best results are obtained by refluxing in DMF at 125 degrees C for 4 hours. The mixture is easily separated by flash chromatography.

Published
1994

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