Abstract
A new nucleophilic isopropyl transfer reagent, triisopropylsulfoxonium
tetrafluoroborate, has been prepared and evaluated. Thus, using
this reagent and NaH in DMF, a range of electron deficient alkenes,
including several chalcone analogues, α,β-unsaturated
ketones, dienones and quinones, plus α,β-unsaturated
esters, nitrile, sulfone and nitro examples, have been converted
into the corresponding gem -dimethylcyclopropane
compounds.
Key words
cyclopropanes - cyclopropanation - sulfoxonium
salts - ruthenium tetraoxide
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