Intramolecular Hydroamination of Conjugated Dienes Catalyzed by Lewis and Bronsted Acids

[摘要]：Intramolecular hydroaminations of conjugated acyclic aminodienes catalyzed by Lewis acids such as silver triflate, cationic gold complexes, BINAP-copper(II) triflate, iron trichloride, indium(III) bromide, iodine and by TfOH, as a representative Bronsted acid, are evaluated. The reaction proceeds in a 1,4-addition manner through a 5-exo-trig cyclization affording the corresponding 2-substituted pyrrolidines, (triphenylphosphite) gold(I) triflate, and TfOH providing the best results.

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