Sahu, S K and Mishra, Amaresh and Behera, R K (1996) Synthesis of thiazole, benzothiazole, oxadiazole, thiadiazole, triazole and thiazolidinone incorporated coumarins. Indian Journal of Heterocyclic Chemistry . pp. 91-94.
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3-Bromoacetylcoumarin-(2)obtained by brominationof 3-acetylcoumarin (1)was condensed with2-amin0-4-phenylthiazole,2-aminothiazole,2-aminobenzothiazole, 2- amino-4-phenyloxadiazole, 2-aminothiadiazole, 3-aminotriazole to form the corresponding heteroaryl aminoacetylcoumarins (3a-f).The reaction of 2 withthiourea furnished 2-amino-4-(coumarinyl-3) thiazole (4) which further reacted with phenyli$othiocyanate forming the unsymmetrical thiourea (5). The thiourea on cyclocondensation withchloroacetic acid gave the thiazolidinone (6)which on further reaction with differen~aromaUcaldehydes resulted inthe formationofthe corresponding arylidene compounds (7). The structures of the products were confirmed from their analytical and spectraldata.
|Uncontrolled Keywords:||Thiazole, benzothiazole, oxadiazole, thiadiazole, triazole, thiazolidinone, coumarins|
|Divisions:||Metal Extraction and Forming|
|Deposited By:||Sahu Sushanta Kumar|
|Deposited On:||30 Jul 2012 13:00|
|Last Modified:||30 Jul 2012 13:03|
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