Problem to be Solved
It is intended to provide an industrially preferable fluoroalkylating agent and use thereof.
Solution
The present invention provides a fluoroalkylating agent represented by the general formula (1) wherein R
1
is a C1 to C8 fluoroalkyl group; R
2
and R
3
are each independently a C1 to C12 alkyl group or the like; Y
1
to Y
4
are each independently a hydrogen atom, a halogen atom, or the like; and X
−
is a monovalent anion.
A compound of the general formula (3): R
4
—S—R
1
having an introduced C1 to C8 fluoroalkyl group is easily obtained by reacting a compound of the general formula (2): R
4
—S—Z wherein R
4
is a hydrocarbon group or the like; and Z is a leaving group, with the compound of the general formula (1).
Aerobic oxidative trifunctionalization of olefins for the synthesis of functionalizedβ-ketothiosulfones has been described. The transformation proceeds through molecular oxygen activation under copper catalysis and forms the two new C–S bonds in a single operation using mild conditions. A novel Cu-catalyzed sulfonyl radical addition/oxidation/funtionalization relay mechanism was proposed for the
Dual gold and photoredox catalysis: visible light-mediated intermolecular atom transfer thiosulfonylation of alkenes
作者:Haoyu Li、Cuicui Shan、Chen-Ho Tung、Zhenghu Xu
DOI:10.1039/c6sc05093j
日期:——
Regioselective difunctionalization of alkenes has attracted significant attention from synthetic chemists and has the advantage of introducing diverse functional groups into vicinal carbons of common alkene moieties in a single operation. Herein, we report an unprecedented intermolecular atom transfer thiosulfonylation reaction of alkenes by combining gold catalysis and visible-light photoredox catalysis
Copper‐catalyzed sequential 1,3‐dipolarcycloadditions of azomethine imines and alkynes and electrophilic thiolations are described. The C−S, C−N, and C−C bonds were simultaneously formed in one pot, leading to N,N‐bicyclic pyrazolidinones in good to excellent yields. The process is proposed to proceed via reaction of a cuprate pyrazolidinonate intermediate and benzenesulfonothioate.
Oxidative Coupling of Dichalcogenides with Sodium Sulfinates via Copper-Catalyzed Cleavage of S–S and Se–Se Bonds
作者:Nobukazu Taniguchi
DOI:10.1021/jo5026805
日期:2015.2.6
A copper-catalyzed sulfonylation of disulfides was achieved using sodiumsulfinates in air. The reaction formed various sulfur–sulfone bonds efficiently and afforded thiosulfonates in good yields. Selenosulfonates could also be prepared with this procedure. Furthermore, both chalcogenide groups on the dichalcogenides were available in these reactions.