Tandem oxidative radical decarboxylation-β-iodination of amino acids. Application to the synthesis of chiral 2,3-disubstituted pyrrolidines
摘要:
A mild and efficient procedure for the tandem decarboxylation-halogenation of alpha-amino acids is reported. The iodine is introduced at previously unfunctionalized positions, in good yields. The methodology has been used for the diastereoselective synthesis of 2,3-disubstituted pyrrolidines. (C) 2000 Elsevier Science Ltd. All rights reserved.
Synthesis of 2,3-Disubstituted Pyrrolidines and Piperidines via One-Pot Oxidative Decarboxylation−β-Iodination of Amino Acids
作者:Alicia Boto、Rosendo Hernández、Yolanda de León、Ernesto Suárez
DOI:10.1021/jo015877a
日期:2001.11.1
of the solvent and the ring size of the starting amino acid are studied, as well as the nature of the protecting group on the nitrogen. The stereoselectivity of the reaction was also studied using chiral methyl (2S,4S)-4-acetyloxyproline-1-carboxylate (8). The products obtained can be manipulated to give bicyclic systems present in many natural products. By using the tandem decarboxylation-iodination-alkylation
Tandem oxidative radical decarboxylation-β-iodination of amino acids. Application to the synthesis of chiral 2,3-disubstituted pyrrolidines
作者:Alicia Boto、Rosendo Hernández、Ernesto Suárez
DOI:10.1016/s0040-4039(00)00188-x
日期:2000.4
A mild and efficient procedure for the tandem decarboxylation-halogenation of alpha-amino acids is reported. The iodine is introduced at previously unfunctionalized positions, in good yields. The methodology has been used for the diastereoselective synthesis of 2,3-disubstituted pyrrolidines. (C) 2000 Elsevier Science Ltd. All rights reserved.