Tetramethylammonium Fluoride Alcohol Adducts for S<sub>N</sub>Ar Fluorination
作者:María T. Morales-Colón、Yi Yang See、So Jeong Lee、Peter J. H. Scott、Douglas C. Bland、Melanie S. Sanford
DOI:10.1021/acs.orglett.1c01490
日期:2021.6.4
aprotic conditions to maintain the nucleophilicity of fluoride and suppress the generation of side products. This report addresses this challenge by leveraging tetramethylammonium fluoride alcohol adducts (Me4NF·ROH) as fluoride sources for SNAr fluorination. Through systematic tuning of the alcohol substituent (R), tetramethylammonium fluoride tert-amyl alcohol (Me4NF·t-AmylOH) was identified as an
亲核芳族氟化 (S N Ar) 是形成 C(sp 2 )-F 键的最常用方法之一。尽管最近取得了许多进展,但这些转化的长期限制是需要严格干燥的非质子条件来保持氟化物的亲核性并抑制副产物的产生。本报告通过利用四甲基氟化铵醇加合物 (Me 4 NF·ROH) 作为 S N Ar 氟化的氟化物来源解决了这一挑战。通过系统调整醇取代基 (R),四甲基氟化铵叔戊醇 (Me 4 NF· t-AmylOH) 被确定为在温和方便的条件下(DMSO 中 80°C,无需干燥试剂或溶剂)下用于 S N Ar 氟化的廉价、实用且台式稳定的试剂。展示了超过 50 种(杂)芳基卤化物和硝基芳烃亲电子试剂的底物范围。
Process for the preparation of fluorinated heterocyclic compounds
申请人:F2 Chemicals Ltd.
公开号:US05859255A1
公开(公告)日:1999-01-12
A method of fluorinating a heterocyclic organic compound comprises the step of reacting a heterocyclic compound with elemental fluorine in the presence of another halogen. The reaction may be conducted in the presence of a base.
PROCESS FOR THE PREPARATION OF FLUORINATED HETEROCYCLIC COMPOUNDS
申请人:BNFL FLUOROCHEMICALS LTD.
公开号:EP0799207A1
公开(公告)日:1997-10-08
US5859255A
申请人:——
公开号:US5859255A
公开(公告)日:1999-01-12
[EN] PROCESS FOR THE PREPARATION OF FLUORINATED HETEROCYCLIC COMPOUNDS<br/>[FR] PROCEDE DE PREPARATION DE COMPOSES HETEROCYCLIQUES FLUORES
申请人:BNFL FLUOROCHEMICALS LTD.
公开号:WO1996019456A1
公开(公告)日:1996-06-27
(EN) A method of fluorinating a heterocyclic organic compound comprises the step of reacting a heterocyclic compound with elemental fluorine in the presence of another halogen (e.g. I2). The reaction may be conducted in the presence of a base.(FR) Procédé de fluoration d'un composé organique hétérocyclique qui consiste à faire réagir ledit composé hétérocyclique avec du fluor élémentaire en présence d'un autre halogène (par ex. I2). Ladite réaction peut être effectuée en présence d'une base.