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ChemInform Abstract The enolates, prepared in situ from the methyl ketones (I), are coupled with the azulenes (II) and subsequently oxidized with chloroanil to yield only the 6-substituted azulenes (III) and (IV). In contrast, the azulenes (V) give the 4-(VI) and the 6-substituted products (VII) by similar reaction with (Ib).

Power consumption in unbaffled and baffled agitated vessels with propeller and pfaudler type impellers is measured over a wide range of Reynolds numbers from laminar to turbulent flow regions. The power correlation for the propeller and pfaudler type impellers is derived from modification of the previously proposed power correlation for a paddle impeller. The calculated correlation values agree well with experimental ones, and the same correlation can be applied to both propeller and pfaudler type impellers.

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