ISSN:
0009-2940
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Heterocyclopolyaromatics, XI. Synthesis, Lithiation, and Oxidative Coupling of 1,3,5-Tri(1-pyrazolyl)benzeneThe title compound 3b, prepared from 1,3,5-tribromobenzene and pyrazole (90%), has been monolithiated at the benzene ring by 1 mol n-butyllithium quantitatively. Oxidative coupling of fivefold lithiated 3b with O2 afforded a disubstituted cyclohexaaromatic compound 4b (3.5%) with face-to-face arrangement of two benzene rings besides the dehydrodimer 4a (8%).
Notes:
Die Titelverbindung 3b, dargestellt aus 1,3,5-Tribrombenzol und Pyrazol (90%), wird durch 1 mol n-Butyllithium quantitativ am Benzolring monolithiiert. Fünffach lithiiertes 3b gibt bei der oxidativen Kupplung mit Sauerstoff den disubstituierten Cyclohexaaromaten 4b (3.5%) mit face-to-face-Anordnung von zwei Benzolringen neben dem Dehydrodimeren 4a (8%).
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19801130819
