28114-92-3Relevant academic research and scientific papers
Strain-Modulated Reactivity: An Acidic Silane
Tretiakov, Serhii,Witteman, Léon,Lutz, Martin,Moret, Marc-Etienne
, p. 9618 - 9626 (2021)
Compounds of main-group elements such as silicon are attractive candidates for green and inexpensive catalysts. For them to compete with state-of-the-art transition-metal complexes, new reactivity modes must be unlocked and controlled, which can be achiev
Base-Promoted Oxidative C(sp3)–S Bond Cross-Coupling of Inactive Fluorenes and Thiols for the Synthesis of 9-Monothiolated Fluorenes
Liu, Yafeng,Yuan, Xinglong,Su, Kexin,Tian, Yuan,Chen, Baohua
supporting information, p. 1649 - 1652 (2019/01/30)
The highly efficient and selective C(sp3)–S bond cross-coupling method for the synthesis of 9-thiolated fluorenes through a direct thiolation at 9-C(sp3)–H of fluorenes with thiols is described. This reaction occurs at ambient conditions and shows good tolerance of functional groups including arylthiols and alkylthiols. A wide range of products is obtained in moderate to good yields. Besides, the reaction of benzothiophenol and fluorine generates unexpected 9-benzylidene-9H-fluorene by eliminating hydrogen sulfide.
Equilibrium Acidities of Nitroalkanes in an Ionic Liquid
Gao, Feixiang,Ji, Pengju,Cheng, Jin-Pei
supporting information, p. 14962 - 14968 (2019/01/03)
The acidity ladder scale in [BMPY][NTf2] was successfully expanded toward the weak acidity region for about five more pK units compared to the previously established one. This allows the acidities of a series of 13 aliphatic and aromatic nitroalkanes to be determined accurately by the UV-vis spectroscopic method. The acidity of nitroalkane in [BMPY][NTf2] covers ~8 pK units and is significantly weaker than those in DMSO and water. The Hammett plot for 4-substituted phenylnitromethanes shows an excellent linearity with a slope of 2.06, which is rather close to that in DMSO but significantly larger than that in water (0.80). The regression analyses reveal that the solvation behavior of [BMPY][NTf2] on the acidic dissociations of C-H acids is similar to that of DMSO.
