Diethyl sulfate Piprozolin

Ethyl thioglycolate and ethyl cyanoacetate are first reacted in the presence of sodium ethylate to give 4-oxo-thiazolidin-2-ylideneacetic acid ethyl ester. That is reacted with diethyl sulfate and then with piperidine to give piprozolin. 

Diethyl sodium phthalidomalonate Melphalan Diethyl sulfate Aminometradine Etidocaine HCI Fluorouracil Pipemidic acid Piprozolin Piromidic acid... 

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