647-60-9Relevant academic research and scientific papers
Visible-light mediated directed perfluoroalkylation of hydrazones
Ji, Heng,Ni, Hui-Qiong,Zhi, Peng,Xi, Zi-Wei,Wang, Wei,Shi, Jian-Jun,Shen, Yong-Miao
, p. 6014 - 6023 (2017)
Perfluoroalkylation of N-alkylhydrazones has been achieved via visible light mediated photoredox reactions between the hydrazone and perfluoroalkyl iodide (RfI). This protocol provides a convenient and efficient access to a series of perfluoroalkylated aromatic aldehyde hydrazones which tolerates a wide range of functional groups on the aromatic ring, and allows the use different types of primary and secondary perfluoroalkyl iodides with up to eight carbon atoms. Furthermore, aliphatic aldehyde hydrazones and N-monosubstituted hydrazones which are unreactive in previously reported hydrazone perfluoroalkylation reactions now take part in the reaction under our reaction conditions to give a satisfactory yield of products. Stern-Volmer quenching studies and spin-trapping experiments indicated that these reactions proceed by free radical addition of the Rf radical to the azomethine atom followed by one electron oxidation of the hydrazyl radical and deprotonation of the diazenium cation.
Visible-light-promoted organic dye catalyzed perfluoroalkylation of hydrazones under mild conditions
Zhou, Ming-Dong,Peng, Zhen,Li, Lei,Wang, He
, (2019)
A general and facile visible-light-promoted organic dye catalyzed perfluoroalkylation of hydrazones has been developed using inexpensive and non-toxic Eosin Y as the photoredox catalyst under mild conditions. This reaction protocol exhibits synthetic simp
A new entry for the oxidation of fluoroalkyl-substituted methanol derivatives: Scope and limitation of the organoiodine(V) reagent-catalyzed oxidation
Tanaka, Yusuke,Ishihara, Takashi,Konno, Tsutomu
experimental part, p. 99 - 104 (2012/05/07)
Oxidation of various fluoroalkyl-substituted methanol derivatives under the influence of a catalytic amount of sodium 2-iodobenzenesulfonate and Oxone in CH3CN or CH3NO2 was investigated in detail. The efficiency of the newly developed oxidation was also evaluated by comparison to other oxidations, such as Dess-Martin, PDC, and Swern oxidation.
POLYMORPHISM AND INTERMOLECULAR INTERACTIONS IN CRYSTALLINE FLUORINATED ALKYLBENZOIC ACIDS
Atakhodzhaev, A. K.,Babkov, L. M.,Zalesskaya, I. M.,Fialkov, Yu. A.,Privalko, V. P.,et al.
, p. 229 - 244 (2007/10/02)
Thermodynamic and spectral characteristics of fluorinated derivatives of alkylbenzoic acids (FABA) were studied in the temperature range 100-550 K.Experimental values of temperatures, enthalpies and entropies of phase transitions, as well as hydrogen bond energy at different temperatures and in the various physical (phase) states were compared to those for alkyl- and fluoroalkyl-benzoic acids.IR absorption spectra of substances studied were interpreted on the basis of theoretical calculations of frequencies, shapes and intensities of normal modes of molecular vibrations using the published data for related compounds.The information derived was used to construct models of packing of dimerized molecules of FABA in the crystalline state, and possible causes of the absence of mesomorphism on complete fluorination of alkyl radical were discussed.
LIQUID CRYSTALS CONTAINING FLUORINE. IX. 4-CYANOPHENYL 4-(PERFLUOROALKYL)BENZOATES AND TRANS-4-(PERFLUOROALKYL)CYCLOHEXANECARBOXYLATES
Fialkov, Yu. A.,Zalesskaya, I. M.,Yagupol'skii, L. M.
, p. 1781 - 1787 (2007/10/02)
By hydrogenation of 4-(perfluoroalkyl)benzoic esters at platinum and subsequent hydrolysis cis- and trans-4-(perfluoroalkyl)cyclohexanecarboxylic acids were obtained.A convenient method was foun for the isolation of the trans isopmers. 4-Phenyl esters of
