Abstract
The condensation of bis(nonafluorobutanesulfonyl)methane (1) with carbodiimides 2, triethyl orthoformate (4) and tetraethyl orthocarbonate (6) affords capto-dative olefins 2,2-dialkylamino-1,1-bis(nonafluorobutanesulfonyl)ethenes 3, 2-ethoxy-1,1-bis(nonafluorobutanesulfonyl)ethene (5) and 2,2-diethoxy-1,1-bis(nonafluorobutanesulfonyl)ethene (1). NMR studies of the capto-dative olefins show a highly polarized ground state, which was also confirmed by X-ray structure analysis of the bistriflone 10
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