14090-77-8Relevant articles and documents
Imidazole oxime ester compound, preparation method, composition and use thereof (by machine translation)
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Paragraph 0039-0042, (2019/05/11)
The invention relates to novel imidazole oxime ester compound, preparation method, composition and in photoinitiators, photosensitizers, the light absorbent, or sensitizers of the application. The invention imidazole oxime ester compound, at the same time with imidazole kind of light initiator (for example BCIM) and oxime mere initiator (for example 0 XE - 1) structural features. In one aspect, the compounds of the invention has improved the imidazole kind of light will produce sludge to the shortcoming of the initiator. On the other hand, compound of the present invention improved the thermal stability of the oxime [...] initiator problem not good, and increasing the operating convenience. (by machine translation)
Potential photoacid generators based on oxime sulfonates
Plater, M. John,Harrison, William T. A.,Killah, Ross
, p. 26 - 33 (2019/06/03)
The bis-oxime of acenaphthenequinone and the mono-oxime of benzil have been sulfonated by reaction with 4-methylbenzenesulfonyl chloride and propylsulfonyl chloride. The four sulfonated oximes were characterised by X-ray single-crystal structure determinations. Some photochemical decompositions were studied using a 6-W 254-nm immersion well lamp in dichloromethane. The 4-methylbenzenesulfonate bis-oxime of acenaphthenequinone and the 4-methylbenzenesulfonate mono-oxime of benzil both give 4-methylbenzenesulfonic acid upon irradiation but not 4-methylbenzenesulfinic acid. Fragmentation pathways are discussed. The possible use of these compounds as photoacid generators in polymer resists and the role of secondary reactions to liberate acid is discussed.
Discovery of a series of ruthenium(II) derivatives with α-dicarbonylmonoxime as novel inhibitors of cancer cells invasion and metastasis
He, Yihui,Xue, Huiying,Zhang, Wendian,Wang, Li,Xiang, Guangya,Li, Lei,Shang, Xianmei
, p. 82 - 92 (2017/05/19)
A series of novel ruthenium(II)-cymene complexes (1–9) with substituted α-dicarbonylmonoximes of general formula [Ru(η6-cymene)(L)Cl] (L?=?N,O-chelating bidentate α-dicarbonylmonoxime derivatives) have been synthesized and characterized by elemental analysis, IR, 1H NMR, 13C NMR spectroscopies, and in three cases by single crystal X-ray diffraction analysis. The most effective compound 9 displays remarkable anti-invasion and anti-metastasis properties without apparent cytotoxicity toward three different human cancer cell lines (MCF-7, Hela and HepG2). Further protein level studies suggest that the anti-metastasis activity of the complexes may result from the increasing expression of E-cadherin and reducing expression of Vimentin.
Green and highly selective protocol for the synthesis of oximes
Ghosh, Pranab,Subba, Raju
, p. 529 - 532 (2013/11/06)
A green and efficient protocol has been developed for the synthesis of either exclusively a monoxime or exclusively a dioxime from a host of 1,2-dicarbonyl compounds on silica.
Optically active imidazoles derived from enantiomerically pure trans-1,2-diaminocyclohexane
Mloston, Grzegorz,Rygielska, Dorota,Jasinski, Marcin,Heimgartner, Heinz
body text, p. 669 - 674 (2011/07/08)
A new exploration of monoprotected derivatives of trans-1,2- diaminocyclohexane as a platform for the synthesis of enantiomerically pure imidazole derivatives is described. The primary amino group (-NH2), present in the mono-imine derivative of salicylic aldehyde (hemi-salen derivative) 5 was used for sequential reactions with formaldehyde and the corresponding α-(hydroxyimino)ketone. (S)-(-)-1-Phenylethylamine was also used as starting material for the preparation of new imidazole N-oxides 7c and 10a-c, bearing a chiral N-(1-phenylethyl)carboxamido function at C(4). Imidazole N-oxides 10a,b possessing either a Me or i-Pr group at N(1), respectively, follow the known sulfur-transfer pathway to afford the corresponding imidazole-2-thiones 13a,b. However, in the case of imidazole N-oxide 10c with a bulky adamantan-1-yl substituent at N(1), the attempted 'sulfur-transfer reaction' led to the deoxygenated imidazole derivative 14. Finally, the same reaction with 7c, which bears an electron-withdrawing N-(1-phenylethyl) carboxamide residue at C(4) of the imidazole ring, yielded a mixture of deoxygenated imidazole 16 and imidazole-2-thione 15c.
Phenylation reaction of α-acylnitromethanes to give 1,2-diketone monooximes: Involvement of carbon electrophile at the position a to the nitro group
Takamoto, Mikihiro,Kurouchi, Hiroaki,Otani, Yuko,Ohwada, Tomohiko
scheme or table, p. 4129 - 4136 (2011/03/17)
The generality and the effects of substituents on phenylation reactions of α-acylnitromethanes catalyzed by trifluoromethanesulfonic acid have been studied. α-Aroylnitromethanes afforded benzil monooximes in good yield. In the case of aliphatic α-acylnitromethane, a similar phenylation reaction proceeded, but the yield of the phenylated 1,2-dione monooxime was low. These phenylation reactions represent examples of the generation of carbocation electrophiles at the α-position of a nitro group. Georg Thieme Verlag Stuttgart - New York.
Preparation and structure of optically active imidazolium tetrafluoroborates : In search of new chiral ionic liquids
Mloston,Mucha,Tarka,Urbaniak,Linden,Heimgartner
experimental part, p. 1105 - 1114 (2010/03/01)
Enantiomerically pure (R)-l-(l-phenylethyl)imidazoles 4a,b can be prepared conveniently from α-(hydroxyimino)ketones 1, (R)-l-phenylethylamine and formaldehyde, followed by deoxygenation with Raney-Ni. Similarly, the reaction with (R,R)-trans-cyc-lohexane-l,2-diamine yields enantiomerically pure (R, R)-trans-1,1'-cyclohex-ane-l,2-diyl)imidazoles 4c,d. Alkylation of these imidazole derivatives with alkylbromides leads to the corresponding 3-alkylimidazolium bromides 6 and 8, respectively, which on treatment with sodium tetrafluoroborate are transformed into the corresponding tetrafluoroborates 7 and 9. Whereas some of the imidazolium salts 7 show properties of chiral ionic liquids, the bis-imidazolium tetrafluoroborates 9 are high-melting crystalline materials.
Synthesis and selected transformations of 1H-imidazole 3-oxides derived from amino acid esters
Jasinski, Marcin,Mloston, Grzegorz,Linden, Anthony,Heimgartner, Heinz
experimental part, p. 1916 - 1933 (2009/02/07)
A series of new optically active 1H-imidazole 3-oxides 5 with a substituted acetate group at N(1) as the chiral unit were prepared by the reaction of α-(hydroxyimino) ketones, α-amino acid methyl esters, and formaldehyde. In an analogous reaction, ethyl 2
An efficient tandem oxidative-protection reaction of benzylic alcohols to corresponding arylhydrazones and oximes
Badri, Rashid,Shushizadeh, Mohammad Reza
, p. 601 - 605 (2007/10/03)
A mild and efficient one-pot synthesis of hydrazones and oximes from the reaction of the oxidation product of benzyl alcohols and phenols by 3,6-bis(triphenylphosphonium)cyclohexene dichromate with phenylhydrazine, 2,4-dinitrophenylhydrazine, and hydroxylamine is described. Copyright Taylor & Francis Group, LLC.
A new and general method for the synthesis of quinoxalines
Tajbakhsh,Bakooie,Ghassemzadeh,Beheshtiha,Heravi
, p. 1232 - 1233 (2007/10/03)
A new and general synthetic method for the preparation of 2,3-disubstituted quinoxalines is described. Treatment of ?-phenylenediamine with α-ketoaldoximes in ethanol affords 2,3-disubstituted quinoxalines in one-step reaction.
