phosphoryl chloride


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phosphoryl chloride

[′fäs·fə·rəl ′klȯr‚īd]
(inorganic chemistry)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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2-(Coumarin-4-yl)acetic acid 1 was reacted with thiocarbohydrazide 2 in refluxing phosphoryl chloride to yield the target 3-[(coumarin-4-yl) methyl]-4-amino-1H-1,2,4-triazole-5(4H)-thione 3 in 80% yield.
Phosphoryl chloride (5 g) was added drop-wise to an ice-cold mixture of 2-(coumarin-4-yl) acetic acid 1 (1.06 g, 0.01 mole) and thiocarbohydrazide 2 (2.04 g, 0.01 mole) with stirring, and the mixture was then heated under reflux for one hour.
Phosphoryl chloride (3.58 mg 0.0235 mmol) was added in portions to N,N-dimethylformamide (15 mL) with stirring at 0[degrees]C.