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Synthesis 1990; 1990(9): 825-826
DOI: 10.1055/s-1990-27027
DOI: 10.1055/s-1990-27027
paper
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Pyrothiocarbonates; IV. Synthesis of Potassium O-Alkyl Thiocarbonates and Their Use in the Preparation of Symmetrical and Unsymmetrical Dialkoxycarbonyl Sulfides
Further Information
Publication History
Publication Date:
17 September 2002 (online)
Alkyl group interchange (transesterification) proceeds on heating a potassium O-alkyl thiocarbonate with an alcohol having an alkyl group different from that of the potassium salt. This transesterific- ation is utilized to prepare potassium O-alkyl thiocarbonates since the direct method by reaction of alkoxide ion with carbonyl sulfide is less efficient. The reaction of potassium O-alkyl thiocarbonates with alkyl carbonochloridates gives symmetrical or unsymmetrical dialkoxycarbonyl sulfides in high yields.