Ethyl cyanoacetate 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. 

N-Ethyl-3-chloropiperidine Pipenzolate bromide 1 -Ethyl-3-chloropyrrolidine Doxapram HCI Ethyl -chlorovinyl ketone Ethchlorvynol Ethyl cyanoacetate Ethosuximide Piprozolin Tinoridine... 

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