Synthesis of Perfluoroalkyl-Substituted<i>γ</i>-Lactones and 4,5-Dihydropyridazin-3(2<i>H</i>)-ones<i>via</i>DonorAcceptor Cyclopropanes
作者:Daniel Gladow、Hans-Ulrich Reissig
DOI:10.1002/hlca.201200413
日期:2012.10
presence of perfluoroalkyl‐ or perfluoroaryl‐substituted silyl enol ethers smoothly provided the corresponding alkyl 2‐siloxycyclopropanecarboxylates in very good yields. The generated donoracceptor cyclopropanes are equivalents of γ‐oxo esters, which we demonstrated by their one‐pot transformations to yield fluorine‐containing heterocycles. A reductive procedure selectively afforded perfluoroalkyl‐substituted