Abstract
An expeditious approach for the synthesis of thiazolidin-2-imines and 1,3-thiazinan-2-imines through three-components coupling (TCC) of amines, isothiocynates and dihalides under metal-free conditions has been described. Dichloroethane (DCE) employed as two carbon (C2) source for the annulation and obtained saturated five membered heterocycles.With 1,3-dibromopropane, six membered heterocycles were obtained in good yields. The metal-free, broad substrate scope, functional group tolerance and applicability at gram scale synthesis are the advantages of the present protocol.
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