Convergent access to mono-fluoroalkene-based peptidomimetics
作者:Florent Larnaud、Charlène Calata、Anaïs Prunier、Clothilde Le Guen、Rémi Legay、Emmanuel Pfund、Thierry Lequeux
DOI:10.1039/d1ob02441h
日期:——
The convergent and selective preparation of (Z)-monofluoroalkene-based dipeptideisosteres from functionalized fluorosulfones as a cornerstone is described. In this approach, the N-terminal amino group is introduced by a conjugate addition reaction of phthalimide onto fluorinated vinylsulfones containing α-amino-acid side chains while the C-terminal motif is linked to the fluorovinylic peptide bond
描述了以功能化氟砜为基石聚合和选择性制备( Z )-单氟烯烃基二肽电子等排体。在这种方法中, N端氨基通过邻苯二甲酰亚胺的共轭加成反应引入到含有 α-氨基酸侧链的氟化乙烯砜上,而C端基序通过Julia-Kocienski 反应与氟乙烯基肽键模拟物连接介于氟砜和带有 α-氨基酸侧链的取代醛之间。
Convergent synthesis of functionalized fluoroallylamines by the Julia–Kocienski reaction
作者:Charlène Calata、Emmanuel Pfund、Thierry Lequeux
DOI:10.1016/j.tet.2010.12.061
日期:2011.2
The synthesis of beta-fluoroallylamines is reported from aminofluorobenzothiazolylsulfones. These open a new route for a short synthesis of vinylic fluoride containing highly functionalized amino residues. (C) 2010 Elsevier Ltd. All rights reserved.
Toward the Synthesis of Benzothiazolyl Fluoroaminosulfones
作者:Charlène Calata、Emmanuel Pfund、Thierry Lequeux
DOI:10.1021/jo901540c
日期:2009.12.18
Due to the importance of allylamines in organic synthesis, the synthesis of reagents as potent precursors of aminofluoroolefins is reported from functionalized benzothiazolylsulfones. The key intermediate, a fluorovinyl sulfone, was prepared and functionalized by addition of aliphatic, aromatic amines and amino acid alkyl esters through an aza-Michael addition reaction.
Selective preparation of tetrasubstituted fluoroalkenes by fluorine-directed oxetane ring-opening reactions
The selective ring-opening reaction of fluoroalkylidene-oxetanes was directed by the presence of the fluorine atom, enabling a two-step access to tetrasubstituted fluoroalkenes with excellent geometry control. Despite its small van der Waals radii electronic, rather than steric influences of the fluorine atom governed the ring-opening reaction with bromide ions, even in the presence of bulky substituents
Photocatalyzed Hydroaminodifluoroalkylation of Alkenes
作者:Pierre Fossé、Emmanuel Pfund、Thierry Lequeux
DOI:10.1002/chem.202301793
日期:2023.10.9
aminosulfinates enabled the preparation of β-fluoroalkylamines in a photocatalyzed addition reaction of the corresponding aminodifluoroalkyl radicals to electron-deficient, electron-rich alkenes and vinylaryls or unactivated alkenes.