Comparative study of the reactions of two alkynes and an alkene with chiral cyclopalladated complexes derived from N , N -dimethyl-α-(2-naphthyl)ethylamine and N , N -dimethyl-α-methylbenzylamine: Insertion or cycloaddition.
The chiral cyclopalladated complexes containing coordinated 3,4-dimethyl-1-phenylphosphole, DMPP, and an N-donor ligand, (Sc)-l or (Sc)-3, reacted with dimethylacetylene dicarboxylate, DMAD, and diphenylacetylene to produce exclusively the insertion products (Sc)-2, (Sc)-4, (Sc)-5, and (Sc)-6, respectively, although [4+2] Diels - Alder cycloaddition reactions between DMAD or diphenylacetylene and coordinated DMPP were possible. N-Phenylmaleimide underwent [4+2] Diels - Alder cycloaddition to...[Show more]
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