O-Ethyl thioacetate is an organosulfur compound with the formula C2H5OC(S)CH3. It is the unstable isomer of S-ethyl thioacetate. It is prepared by treatment of the iminoester with hydrogen sulfide:
CH3C(=NH)OC2H5 + H2S → CH3C(=S)OC2H5 + NH3 The orthoester also reacts usefully with hydrogen sulfide in the presence of ferric chloride as a catalyst:
CH3C(OC2H5)3 + H2S → CH3C(=S)OC2H5 + 2 HOC2H5
Related compounds Ethyl thioacetate (C2H5SC(O)CH3) is the stable isomer of O-ethyl thioacetate.
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