36603-99-3Relevant articles and documents
Ionic liquids as a reusable media for copper catalysis. Green access to alkenes using catalytic olefination reaction
Muzalevskiy, Vasily M.,Shastin, Aleksey V.,Shikhaliev, Namiq G.,Magerramov, Abel M.,Teymurova, Aytekin N.,Nenajdenko, Valentine G.
, p. 7159 - 7163 (2016/10/24)
It was demonstrated that ionic liquids are superb recyclable media for copper catalyzed reactions using catalytic olefination reaction as an example. As a result a novel green access to the halogenoalkenes was elaborated. Possibility to perform up to five reaction cycles without catalyst leaching and decreasing of the yield was demonstrated. A number of various ionic liquids was screened and 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim] [BF4]) was found the solvent with highest efficiency. Mild conditions, high atom economy comparing to other known methods, low amounts of wastes and possibility to recover ionic liquid are the advantages of the proposed method.
DEGRADABLE HYDRAZONE CURING AGENTS AND APPLICATIONS THEREOF
-
Paragraph 067, (2015/04/15)
This invention provides, among others, curing agents of Formulae (I) and (II), methods for preparing these curing agents, prepreg materials, degradable cross-linked polymers and reinforced composites made from these curing agents and epoxy resins, and met
A novel one pot multi-component strategy for facile synthesis of 5-aryl-[1,2,4]triazolidine-3-thiones
Mane,Pore
supporting information, p. 6601 - 6604 (2015/01/09)
We have disclosed an efficient, one pot, novel multi-component approach for the synthesis of 5-aryl-[1,2,4]triazolidine-3-thiones from aldehyde, hydrazine hydrate, and trimethylsilyl isothiocyanate (TMSNCS) in the presence of catalytic amount of sulfamic acid. High yields, easy work-up procedure, no chromatographic separation, and novelty in multi-component strategy are the main merits of the present strategy.
Synthesis and extraction abilities of mono-formylated calix[4]-1,3-aza- crown and its hydrazone derivatives
Yang, Fafu,Jiao, Ziyu,Huang, Zhisheng,Xie, Jianwei,Guo, Hongyu
scheme or table, p. 257 - 263 (2012/10/18)
By formylation of calix[4]-1,3-aza-crown in hexamethylenetetramine/ trifluoroacetic acid system, the first formylated calix[4]-aza-crown derivative 6 was synthesized in yield of 61%. Reacting compound 6 with salicyloyl hydrazine, 2,4-dinitrophenyl hydrazine, nicotinyl hydrazine or phenyl thiosemicarbazide afforded four novel calix[4]crown hydrazone derivatives 7a-d in yields of 70-90%. By condensating compound 6 with series of bifunctional reagents, the novel mono-bridged biscalix[4]-aza-crown hydrazone derivatives 8a-c were prepared in high yields. The extraction experiments showed that all new compounds were good receptors for metal cations, especially, for soft metal cations. The extraction results suggested that the hydrazone groups produced favorable influences for binding soft cations. The two calix[4]arene units in compounds 8a-c could bind metal cations concurrently.
Synthesis of novel symmetric Schiff bases using KSF
Mahmoodi, Nosrat O.,Zanjanchi, Mohammad A.,Aliakbar, Alireza,Behzadi, Tahere,Ghanbari, Fateme
experimental part, p. 517 - 522 (2012/04/04)
Different novel symmetric Schiff bases were synthesized in a simple and environmentally benign method from the reaction of produced Schiff base with various aldehydes and ketones using montmorollonite KSF clay as heterogeneous solid acidic catalyst in goo
A novel approach to fluoro-containing alkenes
Korotchenko, Vasily N,Shastin, Alexey V,Nenajdenko, Valentine G,Balenkova, Elisabeth S
, p. 7519 - 7527 (2007/10/03)
A new and general one-pot transformation of aromatic aldehydes to fluorinated olefins containing -CH=C(Cl)CF3 or -CH=C(F)CClF2 moieties is described. Freons CCl3CF3 and CCl2FCClF2 were used as trifluoromethyl and difluoromethyl C2-building blocks respectively. A proposed mechanism for the reaction is discussed.
