centered around ring-opening carbon–carbon bond cleavage/fluorination of strained cycloalkanols, either using precious silver catalysis or superstoichiometric ceric ammonium nitrate (CAN). Careful study of these methods has allowed us to design and develop a general Earth-abundant-element-catalyzed method for remotely fluorinated ketone synthesis via C–C bond cleavage. Critically, the use of manganese
Rapid and scalable synthesis of fluoroketones <i>via</i> cerium-mediated C–C bond cleavage
作者:Yen-Chu Lu、Helen M. Jordan、Julian G. West
DOI:10.1039/d0cc08183c
日期:——
Ketones with remote fluorination are an important motif in the synthesis of bioactive molecules. Here we demonstrate that ceric ammonium nitrate (CAN) is able to produce this functionality under incredibly mild conditions and short reaction times (30 min) while eliminating the need for precious metals in previous methods. Importantly, this method allows the efficient synthesis of a wide variety of
Visible light-mediated radical fluoromethylation <i>via</i> halogen atom transfer activation of fluoroiodomethane
作者:Patrick J. Deneny、Roopender Kumar、Matthew J. Gaunt
DOI:10.1039/d1sc04554g
日期:——
offering a promising strategy for the discovery of novel pharmaceutical agents. Direct fluoromethylation of unfunctionalized C(sp2) centres can be achieved using fluoromethyl radicals, but current methods for their generation usually rely on the activation of non-commercial or expensive radical precursors via inefficient single electron transfer pathways, which limits their synthetic application. Here
ALKYLATED TETRAHYDROISOQUINOLINES FOR BINDING TO CENTRAL NERVOUS SYSTEM RECEPTORS
申请人:Florida A&M University
公开号:US20180193330A1
公开(公告)日:2018-07-12
Derivatives of 1,2,3,4-tetrahydroisoquinoline (THIQ) having the general formula A-(CH
2
)
n
—B are provided, wherein A is THIQ or a substituted derivative thereof and B is an aryl, cycloalkylaryl, or cycloalkyl group, wherein A and B are linked to each other by an alkyl or substituted alkyl chain. The compounds are useful as selective ligands (agonists or antagonists) of central nervous system receptors, and in particular of the seratonin receptors. The compounds or their salts can be formulated into pharmaceutical in need thereof by any route of administration suitable for a desired treatment protocol and especially for the treatment of psychiatric disorders.
Photoreactivity of .alpha.-fluorinated phenyl alkyl ketones
作者:Peter J. Wagner、Michael J. Thomas、Allen E. Puchalski
DOI:10.1021/ja00284a042
日期:1986.11
The photoreactivities of the mono-, di-, and tri-..cap alpha..-fluorinated acetophenones have been compared to that of acetophenone itself. All four ketones have similar triplet excitation energies; the three fluorinated ketones have reduction potentials 0.5-0.7 eV lower than that of acetophenone. Triplet reactivity toward alkylbenzenes keeps increasing with fluorine substitution, since the rate-determining