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Synthesis of pyrylium salts with functional substituents

โœ Scribed by V. I. Dulenko; N. N. Alekseev; V. M. Golyak


Book ID
112384775
Publisher
Springer US
Year
1975
Tongue
English
Weight
61 KB
Volume
11
Category
Article
ISSN
0009-3122

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At the reaction temperatures required (between 120 and 14OOC) the product sublimes and deposits in the cooler part of the apparatus as needle-shaped crystals, often twinned; the vanadium tetrachloride formed as by-product is removed in the stream of chlorine (ca. 4 litersihr). In three hours, 500 mg