Sulphination of isopropyl bromodifluoroacetate 1a and N,N-diethyl bromodifluoroacetamide 1b with sodium dithionite gives compounds 2a and 2b respectively which upon cuprous bromide catalysed allylation gave the allylsulphonyldifluoro-acetates and -acetamides.
Z. Yang and D. J. Burton, J. Chem. Soc., Perkin Trans. 1, 1991, 2058 DOI: 10.1039/P19910002058
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