Late Stage Benzylic C–H Fluorination with [<sup>18</sup>F]Fluoride for PET Imaging
作者:Xiongyi Huang、Wei Liu、Hong Ren、Ramesh Neelamegam、Jacob M. Hooker、John T. Groves
DOI:10.1021/ja5039819
日期:2014.5.14
aliphatic C-H bonds with no-carrier-added [(18)F]fluoride. The method uses Mn(salen)OTs as an F-transfer catalyst and enables the facile labeling of a variety of bioactive molecules and building blocks with radiochemical yields (RCY) ranging from 20% to 72% within 10 min without the need for preactivation of the labeling precursor. Notably, the catalyst itself can directly elute [(18)F]fluoride from an
[EN] METHODS AND COMPOSITIONS FOR DIRECT RADIOACTIVE LABELING OF BIO-ACTIVE MOLECULES AND BUILDING BLOCKS<br/>[FR] PROCÉDÉS ET COMPOSITIONS DESTINÉS AU MARQUAGE RADIOACTIF DIRECT DE MOLÉCULES ET DE BLOCS DE CONSTRUCTION BIOLOGIQUEMENT ACTIFS
申请人:UNIV PRINCETON
公开号:WO2015134467A1
公开(公告)日:2015-09-11
Methods of direct radioactive labeling a carbon containing compound having an sp3 C-H bond are provided. Methods of carrier-free 18F fluorination of a carbon containing compound mediated by manganese salen complexes or manganese porphyrin complexes comprising weakly coordinated anions as axial ligands are provided. Methods of "dry-down" free radioactive labeling of a carbon containing compound having an sp3 C-H bond are provided. The radioactively labeled products of the methods are provided.
C−F Bond Cleavage by Intramolecular S<sub>N</sub>2 Reaction of Alkyl Fluorides with O- and N-Nucleophiles
作者:Laijun Zhang、Wei Zhang、Jun Liu、Jinbo Hu
DOI:10.1021/jo802819p
日期:2009.4.3
The nucleophilicsubstitution of alkyl fluorides was achieved in the intramolecular reactions with O- and N-nucleophiles. The intramolecular defluorinative cyclization reaction was influenced by the nature of nucleophiles, the size of the ring to be formed, and the comformational rigidity of the precursors. Intermolecular nucleophilicsubstitution reactions of alkyl fluorides under similar reaction
在与O-和N-亲核试剂的分子内反应中实现了烷基氟化物的亲核取代。分子内脱氟环化反应受亲核试剂的性质,要形成的环的大小以及前体的构象刚性的影响。发现在相似的反应条件下烷基氟化物的分子间亲核取代反应是困难的。当前C-F键断裂反应的立体化学研究显示出完全的构型反转,这支持了分子内S N 2反应机理。
BENZOTHIOPHENE DERIVATIVES AND COMPOSITIONS THEREOF AS SELECTIVE ESTROGEN RECEPTOR DEGRADERS
申请人:NOVARTIS AG
公开号:US20170112805A1
公开(公告)日:2017-04-27
The present invention relates to compounds of formula I:
in which n, m, X, Y
1
, R
1
, R
2
, R
3
, R
4
and R
5
are defined in the Summary of the Invention; capable of being both potent antagonists and degraders of estrogen receptors. The invention further provides a process for the preparation of compounds of the invention, pharmaceutical preparations comprising such compounds and methods of using such compounds and compositions in the management of diseases or disorders associated with aberrant estrogen receptor activity.
Methods of halogenating a carbon containing compound having an sp3 C—H bond are provided. Methods of fluorinating a carbon containing compound comprising halogenation with Cl or Br followed by nucleophilic substitution with F are provided. Methods of direct oxidative C—H fluorination of a carbon containing compound having an sp3 C—H bond are provided. The halogenated products of the methods are provided.