Electronic Resource
Springer
Chemistry of heterocyclic compounds
9 (1973), S. 805-808
ISSN:
1573-8353
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Three new methods have been proposed for the synthesis of 3-bromopyrylium salts. An unsaturated 1,5-diketone is converted into a 3-bromopyrylium salt by allyl bromination and the addition of bromine to the double bond. 3-Bromopyrone, obtained by the bromination of dibenzoylacetone is converted by treatment with Grignard reagents into 3-bromopyrylium salts. Similar compounds have also been synthesized by the pyrylation of aromatic and heterocyclic compounds with 3-bromo-4-chloropyrylium salts obtained from 3-bromopyrone.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00471553
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