[EN] A NEW METHOD OF 18F LABELLING AND INTERMEDIATE SALTS<br/>[FR] NOUVEAU PROCÉDÉ D'ÉTIQUETAGE DE 18F ET DE SELS INTERMÉDIAIRES
申请人:NAT UNIV SINGAPORE
公开号:WO2021126080A1
公开(公告)日:2021-06-24
Disclosed herein is a salt of formula I: where R1, X, n, R, R1, Y, m, p, q, Z and o are as defined herein. Also disclosed herein are methods of using said salts in chemical synthesis, such as to prepare compounds isotopically enriched in 18F for use in PET imaging, as well as methods to make the compounds of formula I.
Frustrated Lewis-Pair-Meditated Selective Single Fluoride Substitution in Trifluoromethyl Groups
作者:Dipendu Mandal、Richa Gupta、Amit K. Jaiswal、Rowan D. Young
DOI:10.1021/jacs.9b12167
日期:2020.2.5
developed a generic protocol that allows a single substitution of one fluoride in trifluoromethylgroups with neutral phosphine and pyridine bases. The resulting phosphonium and pyridinium salts can be further functionalized via nucleophilic substitution, photoredox coupling and electrophilic transfer reactions allowing the generation of a vast array of difluoromethyl products.
Synthèse d'aryl- et hètèroarylsilanes par scission de l'hexaméthyldisilane
作者:P. Babin、B. Bennetau、M. Theurig、J. Dunoguès
DOI:10.1016/0022-328x(93)80045-d
日期:1993.3
4-dichlorotrifluoromethylbenzene. This process, which avoids the use of a stoichiometric amount of metal, is especially useful when the function attached to the aryl bromide is not compatible with common organometailic intermediates.
Highly Selective Addition of a Broad Spectrum of Trimethylsilane Pro-nucleophiles to <i>N</i>
-<i>tert</i>
-Butanesulfinyl Imines
作者:Manas Das、Donal F. O'Shea
DOI:10.1002/chem.201503354
日期:2015.12.14
Addition of organotrimethylsilane reagents to chiral N‐tert‐butanesulfinyl imines can be achieved in good yields and with excellent diastereoselectivities by employing TMSO−/Bu4N+ as a Lewis base activator in THF. A variety of aliphatic, aromatic, heteroaromatic and organometallic chiral imines were utilised as electrophiles for the synthesis of enantioenriched N‐tert‐butanesulfinyl amides. Remarkably
Discovery of a mild basemediated process allows radio-iodination to take place from either silane or germane. Comparison of the results shows that arylgermanes offers clinical potential as radio-iodination precursors. Proof of concept is demonstrated through the labelling of [125I]IMTO and [125I]MIBG thus offering an alternative to radio-iododestannylation processes using non-toxic precursors.