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‐Selective Fluoroalkenylation of (Hetero)Aromatic Systems by Iodonium Reagents in Palladium‐Catalyzed Directed C−H Activation
作者:Balázs L. Tóth、Gergő Sályi、Attila Domján、Orsolya Egyed、Attila Bényei、Zsombor Gonda、Zoltán Novák
DOI:10.1002/adsc.202101108
日期:2022.1.18
The direct and catalytic incorporation of fluorine containing molecular motifs into organic compounds resulting high-value added chemicals represents a rapidly evolving part of synthetic methodologies, thus this area is in the focus of pharmaceutical and agrochemical research. Herein we report a stereoselective procedure for direct fluorovinylation of aromatic and heteroaromatic scaffolds. This methodology
Syntheses and lipophilicity measurement of Nα/N-terminus-1,1-dihydroperfluoroalkylated α-amino acids and small peptides
作者:Darryl D. DesMarteau、Changqing Lu
DOI:10.1016/j.jfluchem.2007.07.003
日期:2007.10
(1,1-Dihydroperfluoroalkyl)phenyliodonium N,N-bis(trifluoromethylsulfonyl)imides (4, n = 0-2) were synthesized and used to transfer the corresponding 1,1-dihydroperfluoroalkyl groups to the a-amino group Of (L)tyrosine. The obtained N-alpha-2,2,2-trifluoroethylated (L)tyrosine (6, n = 0) was further used as the N-terminus in the solid phase peptide synthesis of leucine enkephalin analogue. The lipophilicity of the N-alpha-1,1-dihydroperfluoroalkylated (L)tyrosines (6, n = 0-2) and N-terminus-2,2,2-trifluoroethylated leucine enkephalin analogue (7), as well as the corresponding parent compounds, was measured. (C) 2007 Elsevier B.V. All rights reserved.