Cloricromen
Template:Short description Template:Drugbox Cloricromen is a platelet aggregation inhibitor.[1] Coronary vasodilator.
Synthesis
Base catalyzed alkylation of ethyl acetoacetate (1) with 2-chlorotriethylamine (2) gives compound (3). Separately, disulfonation of resorcinol (4) with 96% sulfuric acid gives the disulfonic acid (5). This is chlorinated with potassium chlorate to give 5-chloro-4,6-dihydroxybenzene-1,3-disulfonic acid (6). Removal of the sulfonate groups in dilute acid then gives 2-chlororesorcinol (7).[2] An acid-catalyzed condensation reaction between (3) and (7) produces the intermediate (8). Ether formation at its phenolic hydroxyl group with ethyl bromoacetate (9) completes the synthesis of cloricromen.[3][4]
See also
- Carbocromen is the analogue without the chlorine substituent
References
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- ↑ Francesco Della Valle, U.S. patent 4452811 (1984 to Fidia S.P.A.).
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