Catalytic Decarboxylative Fluorination for the Synthesis of Tri- and Difluoromethyl Arenes
摘要:
Treatment of readily available alpha,alpha-difluoro- and alpha-fluoroarylacetic acids with Selecffluor under Ag(I) catalysis led to decarboxylative fluorination. This operationally simple reaction gave access to tri- and difluoromethylarenes applying a late-stage fluorination strategy. Translation to [F-18]labeling is demonstrated using [F-18]Selectfluor bis(triflate), a reagent affording [F-18]tri- and [F-18]difluoromethylarenes not within reach with [F-18]F-2.
Catalytic Decarboxylative Fluorination for the Synthesis of Tri- and Difluoromethyl Arenes
摘要:
Treatment of readily available alpha,alpha-difluoro- and alpha-fluoroarylacetic acids with Selecffluor under Ag(I) catalysis led to decarboxylative fluorination. This operationally simple reaction gave access to tri- and difluoromethylarenes applying a late-stage fluorination strategy. Translation to [F-18]labeling is demonstrated using [F-18]Selectfluor bis(triflate), a reagent affording [F-18]tri- and [F-18]difluoromethylarenes not within reach with [F-18]F-2.
Synthesis of α-Fluorinated Areneacetates through Photoredox/Copper Dual Catalysis
作者:Guillaume Levitre、Albert Granados、María Jesús Cabrera-Afonso、Gary A. Molander
DOI:10.1021/acs.orglett.2c00969
日期:2022.5.6
report a metallaphotoredox method for the preparation of fluoroalkyl arenes based on the synergistic combination of Ir/Cu dual catalysis from boronic acids. The mild conditions allow broad functional group tolerance, including substrates containing aldehydes, free phenols, and N-Boc-protected amines. Mechanistic investigations support a process proceeding via photoredox/copper dual catalysis.
Catalytic Decarboxylative Fluorination for the Synthesis of Tri- and Difluoromethyl Arenes
作者:Satoshi Mizuta、Ida S. R. Stenhagen、Miriam O’Duill、Jamie Wolstenhulme、Anna K. Kirjavainen、Sarita J. Forsback、Matthew Tredwell、Graham Sandford、Peter R. Moore、Mickael Huiban、Sajinder K. Luthra、Jan Passchier、Olof Solin、Véronique Gouverneur
DOI:10.1021/ol4009377
日期:2013.6.7
Treatment of readily available alpha,alpha-difluoro- and alpha-fluoroarylacetic acids with Selecffluor under Ag(I) catalysis led to decarboxylative fluorination. This operationally simple reaction gave access to tri- and difluoromethylarenes applying a late-stage fluorination strategy. Translation to [F-18]labeling is demonstrated using [F-18]Selectfluor bis(triflate), a reagent affording [F-18]tri- and [F-18]difluoromethylarenes not within reach with [F-18]F-2.