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).
General and Practical Formation of Thiocyanates from Thiols
作者:Reto Frei、Thibaut Courant、Matthew D. Wodrich、Jerome Waser
DOI:10.1002/chem.201406171
日期:2015.2.2
A new method for the cyanation of thiols and disulfides using cyanobenziodoxol(on)e hypervalent iodine reagents is described. Both aliphatic and aromatic thiocyanates can be accessed in good yields in a few minutes at room temperature starting from a broad range of thiols with high chemioselectivity. The complete conversion of disulfides to thiocyanates was also possible. Preliminary computational
Direct Photocatalytic S–H Bond Cyanation with Green “CN” Source
作者:Wei Guo、Wen Tan、Mingming Zhao、Lvyin Zheng、Kailiang Tao、Deliang Chen、Xiaolin Fan
DOI:10.1021/acs.joc.8b00887
日期:2018.6.15
Herein we report a novel C–S bond cleavage and reconstruction strategy for the synthesis of thiocyanates through direct photocatalytic S–Hbond cyanation from thiols and inorganic thiocyanate salts. In our strategy, the unprecedented example of cutting off C–S bond of SCN– to deliver the green “CN” sources is demonstrated. This transformation features nontoxic and inexpensive “CN” sources, available
Synthesis of Difluoromethyl Thioethers from Difluoromethyl Trimethylsilane and Organothiocyanates Generated In Situ
作者:Bilguun Bayarmagnai、Christian Matheis、Kévin Jouvin、Lukas J. Goossen
DOI:10.1002/anie.201500899
日期:2015.5.4
A copper‐CF2H complex generated in situfrom copper thiocyanate and TMSCF2H smoothly converts organothiocyanates into valuable difluoromethylthioethers. This reaction step can be combined with several thiocyanation methods to one‐pot protocols, allowing late‐stage difluoromethylthiolations of widely available alkyl halides and arenediazonium salts. This strategy enables the introduction of difluoromethylthio
One-pot synthesis of (ethoxycarbonyl)difluoromethylthioethers from thiocyanate sodium and ethyl 2-(trimethylsilyl)-2,2-difluoroacetate (TMS-CF 2 CO 2 Et)
作者:Lijun Xu、Hongyu Wang、Changwu Zheng、Gang Zhao
DOI:10.1016/j.tet.2017.08.048
日期:2017.10
An efficient one-pot cascade methodology for the synthesis of (ethoxycarbonyl)difluoromethyl thioethers is described. Benzyl, allyl, alkyl halides or diazonium salts as the starting materials together with thiocyanate sodium and TMS-CF2CO2Et in the presence of CsF or NaOAc afford a variety of the fluoroalkylthiolated products in moderate to good yields.
描述了一种用于合成(乙氧基羰基)二氟甲基硫醚的有效的一锅级联方法。在CsF或NaOAc的存在下,以苄基,烯丙基,烷基卤化物或重氮盐为起始原料,与硫氰酸钠和TMS-CF 2 CO 2 Et一起,以中等至良好的收率提供了多种氟代烷基硫代产物。