1584705-82-7Relevant articles and documents
Exploration of the Synthetic Potential of Electrophilic Trifluoromethylthiolating and Difluoromethylthiolating Reagents
Zhang, Jingjing,Yang, Jin-Dong,Zheng, Hanliang,Xue, Xiao-Song,Mayr, Herbert,Cheng, Jin-Pei
supporting information, p. 12690 - 12695 (2018/09/25)
The electrophilicity parameters (E) of some trifluoromethylthiolating and difluoromethylthiolating reagents were determined by following the kinetics of their reactions with a series of enamines and carbanions with known nucleophilicity parameters (N, sN), using the linear free-energy relationship log k2=sN(N+E). The electrophilic reactivities of these reagents cover a range of 17 orders of magnitude, with Shen and Lu's reagent 1 a being the most reactive and Billard's reagent 1 h being the least reactive electrophile. While the observed electrophilic reactivities (E) of the amido-derived trifluoromethylthiolating reagents correlate well with the calculated Gibbs energies for heterolytic cleavage of the X?SCF3 bonds (Tt+DA), the cumol-derived reagents 1 f and 1 g are more reactive than expected from the thermodynamics of the O?S cleavage. The E parameters of the tri/difluoromethylthiolating reagents derived in this work provide an ordering principle for their use in synthesis.
Structure-reactivity relationship of trifluoromethanesulfenates: Discovery of an electrophilic trifluoromethylthiolating reagent
Shao, Xinxin,Xu, Chunfa,Lu, Long,Shen, Qilong
, p. 3012 - 3021 (2015/03/30)
A family of electrophilic trifluoromethanesulfenates was prepared. Structure-reactivity relationship studies showed that the substituted groups on the aryl ring of the trifluoromethylthiolating reagent did not have an obvious influence on their reactivities. A simplified electrophilic trifluoromethylthiolating reagent 1c was then identified that can react with a wide range of nucleophiles such as Grignard reagents, arylboronic acids, alkynes, indoles, β-ketoesters, oxindoles, and sodium sulfinates under mild reaction conditions. A variety of functional groups were tolerated under these conditions.
N-trifluoromethylthiosaccharin: An easily accessible, shelf-stable, broadly applicable trifluoromethylthiolating reagent
Xu, Chunfa,Ma, Bingqing,Shen, Qilong
supporting information, p. 9316 - 9320,5 (2014/10/15)
A new, electrophilic trifluoromethylthiolating reagent, N-trifluoromethylthiosaccharin, was developed and can be synthesized in two steps from saccharin within 30minutes. N-trifluoromethylthiosaccharin is a powerful trifluoromethylthiolating reagent and allows the trifluoromethylthiolation of a variety of nucleophiles such as alcohols, amines, thiols, electron-rich arenes, aldehydes, ketones, acyclic β-ketoesters, and alkynes under mild reaction conditions. 'Sacch'ed out: A new, electrophilic trifluoromethylthiolating reagent, N-trifluoromethylthiosaccharin (1) can be synthesized in two steps from saccharin within 30minutes. The reagent 1 allows the trifluoromethylthiolation of a variety of nucleophiles such as alcohols, amines, thiols, electron-rich arenes, aldehydes, ketones, acyclic β-ketoesters, and alkynes under mild reaction conditions.