Synthesis and molecular structures of a rhoda-lactone and its alkylation product; insertion of a pendant alkyne into a rhodium–hydrogen bond
Abstract
Reaction of [(PMe3)3RhCl] with pent-4-ynoic acid yields the novel exocyclic methylene-substituted rhoda-lactone [(PMe3)3Cl[graphic ommitted]], which reacts with Me3O+BF4– to give [(PMe3)3ClR[graphic ommitted]]BF4; both complexes have been structurally characterized.