Author
Helmut Timmler
Bio: Helmut Timmler is an academic researcher. The author has an hindex of 2, co-authored 2 publications receiving 21 citations.
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17 citations
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18 citations
TL;DR: In this article, a number of new substances obtained from 2,2-dichlorodimedone are described, including ring contraction to a 2-cyclopentenone derivative with simultaneous carbon monoxide elimination, isomerization procedure of halogenated ketones in dimethylformamide and hydrogen chloride, and aromatization to some new resorcinol derivatives.
Abstract: A number of new substances obtained from 2,2-dichlorodimedone are described. The most interesting features of the reactions are: a) the ring contraction to a 2-cyclopentenone derivative with simultaneous carbon monoxide elimination, b) the isomerization procedure of halogenated ketones in dimethylformamide and hydrogen chloride, c)the aromatization to some new resorcinol derivatives. The high yields give most of the procedures a distinct preparative interest.
15 citations
13 citations
TL;DR: The Hauptmethode zur Darstellung von Pyridiniumathanolen wurde verbessert in this paper, und die Hauptmetzleuchten wurden gekennzeichnet werden.
Abstract: Pyridinium-athanole der Formel [R·CHOH·CH2·NC5H5]⊕ Br− sind nach mehreren Methoden zu den N-Vinyl-pyridinium-Salzen dehydratisierbar, die kurz gekennzeichnet werden. - Die Hauptmethode zur Darstellung von Pyridinium-athanolen wurde verbessert.
11 citations