reactivities. However, the synthesis of these compounds remains mostly complicated and time-consuming. Herein, we have developed chemoselectivePd-catalyzed approaches for the late-stage diversification of arenes bearing prefunctionalized KATs. These approaches feature chemoselectivecross-coupling, rapid diversification, functional group tolerance, mild reaction conditions, simple operation, and high yields
Chemoselective <sup>18</sup>F-incorporation into pyridyl acyltrifluoroborates for rapid radiolabelling of peptides and proteins at room temperature
作者:Aristeidis Chiotellis、Hazem Ahmed、Thomas Betzel、Matthias Tanriver、Christopher J. White、Haewon Song、Sara Da Ros、Roger Schibli、Jeffrey W. Bode、Simon M. Ametamey
DOI:10.1039/c9cc08645e
日期:——
A new prosthetic group is reported for 18F-labelling of peptides and proteins based on the chemoselective ligation of potassium acyltrifluoroborates (KATs) and hydroxylamines without any detectable 18F/19F isotope exchange at the acyltrifluoroborate moiety. The new building block is appended via a common amide bond at room temperature with no need for protecting groups which enables an effective orthogonal
Synthesis of Bifunctional Potassium Acyltrifluoroborates
作者:Sizhou M. Liu、Dmitry Mazunin、Vijaya R. Pattabiraman、Jeffrey W. Bode
DOI:10.1021/acs.orglett.6b02652
日期:2016.10.21
New bifunctional potassium acyltrifluoroborate (KAT) substrates have been synthesized in gram scale using optimized reaction conditions. Chemoselective transformation of functional groups in the presence of an acyltrifluoroborate has been demonstrated, and orthogonalreactions of bifunctional KAT reagents are reported. This allows for the incorporation of KAT moieties into peptides and dyes.
One-Step Synthesis of Aliphatic Potassium Acyltrifluoroborates (KATs) from Organocuprates
作者:Sizhou M. Liu、Dino Wu、Jeffrey W. Bode
DOI:10.1021/acs.orglett.8b00720
日期:2018.4.20
A one-stepsynthesis of aliphatic KATs from organocuprates is reported. Organolithium and organomagnesium reagents were readily transmetalated onto Cu(I) and coupled with a KAT-forming reagent to yield the respective aliphatic KAT. The protocol is suitable for primary, secondary and—for the first time—tertiary alkyl substrates. These protocols considerably expand the range of KATs that can be readily
Catalytic Synthesis of Potassium Acyltrifluoroborates (KATs) through Chemoselective Cross‐Coupling with a Bifunctional Reagent
作者:Dino Wu、Nicole A. Fohn、Jeffrey W. Bode
DOI:10.1002/anie.201904576
日期:2019.8.5
Potassium acyltrifluoroborates (KATs) are increasingly important functional groups, and general methods for their preparation are of great current interest. We report a bifunctional iminium reagent bearing both a tin nucleophile and a trifluoroborate, which was applied in chemoselective Pd0‐catalyzed Migita–Kosugi–Stille cross‐coupling reactions owith aryl and vinyl halides. This method gives access