The stereoselective synthesis of highly functionalized 1,2,3-trisubstituted cyclopropanes 1 and 2, starting from readily available furans 3 or N-protected pyrrole 4, is described. Furthermore, exceptionally high diastereocontrol in agreement with the Felkin−Anh model was observed for the addition of nucleophiles to the title compounds.
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Böhm et al. (2000) studied this question.
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