ChemInform Abstract: CLEAVAGE REACTIONS OF 5-ARYLAZO DERIVATIVES OF 1-METHYL-2-BENZYL-2-IMIDAZOLIN-4-ONES

1975 ◽  
Vol 6 (44) ◽  
pp. no-no
Author(s):  
NAZMI ABDEL LATIF KASSAB ◽  
ABDEL HAMID HARHASH ◽  
SANNA OSMAN ABD ALLAH
Keyword(s):  
Cleavage Reactions ◽  
Derivatives Of

Cleavage of the Epimines of 1,6-Anhydrohexoses with Fluoride Anion

2005 ◽  
Vol 70 (12) ◽  
pp. 2075-2085 ◽  
Author(s):  
Jiří Kroutil ◽  
Klára Jeništová
Keyword(s):  
Fluoride Anion ◽  
Ring Cleavage ◽  
Protecting Group ◽  
Reaction Conditions ◽  
Aziridine Ring ◽  
Cleavage Reactions ◽  
Derivatives Of ◽  
Fluoro Derivatives

Aziridine ring cleavage reactions of five N-nosylepimines (2-6) having D-talo, D-galacto, D-manno, and D-allo configurations with potassium hydrogendifluoride under various reaction conditions have been performed. The cleavage regioselectively afforded diaxial isomers of vicinal amino-fluoro derivatives of 1,6-anhydro-β-D-gluco- and mannopyranose 7-11 in 51-94% yields. Removal of 2-nitrobenzenesulfonyl protecting group with benzenethiol has been attempted in the case of compound 10.

Cleavage Reactions of 5-Arylazo Derivatives of 1-Methyl-2-benzyl-2-imidazolin-4-ones

1975 ◽  
Vol 30 (7-8) ◽  
pp. 603-605 ◽  
Author(s):  
Nazmi Abdel Latif Kassab ◽  
Abdel Hamid Harhash ◽  
Sanna Osman Abd Allah
Keyword(s):  
Sodium Hydroxide Solution ◽  
Aqueous Sodium Hydroxide ◽  
The Other ◽  
Ring Cleavage ◽  
Prolonged Heating ◽  
Aqueous Sodium Hydroxide Solution ◽  
Aqueous Sodium ◽  
Triazine Derivatives ◽  
Cleavage Reactions ◽  
Derivatives Of

The 5-arylazo-1-methyl-2-benzyl-2-imidazolin-4-ones (1 a-c) undergo ring cleavage with 1% aqueous sodium hydroxide solution affording α-arylhydrazono-phenacetyl-sarcosine amide (2). Prolonged heating of 1 and 2 with the same reagent yields the cyanamide (3). On the other hand, when 1 a-c were refluxed with acetic acid the triazinones (4) were obtained. The latter adds one mole of Grignards reagent to yield the 5-hydroxy-1,2,4-triazine derivatives (5).

Characterization of Monohalogen and Monopseudohalogen Derivatives of Dimethylgermane

1974 ◽  
Vol 52 (14) ◽  
pp. 2622-2633 ◽  
Author(s):  
Geoffrey K. Barker ◽  
John E. Drake ◽  
Raymond T. Hemmings
Keyword(s):  
Force Field ◽  
Vibrational Spectra ◽  
High Yield ◽  
Normal Coordinate ◽  
Physical Methods ◽  
Valence Force Field ◽  
Fundamental Frequencies ◽  
Cleavage Reactions ◽  
Derivatives Of

The high yield syntheses of Me2GeHX (X = F, Cl, Br, I) and Me2GeHPs (Ps = CN, N3, NCO, NCS, OAc) are reported. The dimethylgermane derivatives are identified and characterized by various physical methods and by cleavage reactions where appropriate. A normal coordinate analysis based on a modified valence force field provides confirmation of the assignments for all the fundamental frequencies, except the torsional modes, in the vibrational spectra of the monohalogeno(dimethyl)germanes, Me2GeHX.

Vinyl Derivatives of the Metals. IX. Cleavage Reactions of Perfluorovinyltin Compounds1,2

1961 ◽  
Vol 26 (8) ◽  
pp. 2934-2937 ◽  
Author(s):  
DIETMAR SEYFERTH ◽  
GUNTER RAAB ◽  
KARL A. BRÄNDLE
Keyword(s):  
Cleavage Reactions ◽  
Vinyl Derivatives ◽  
Derivatives Of

Metabolism of Benzoic Acids and Phenols in Cell Suspension Cultures of Soybean and Mung Bean

1978 ◽  
Vol 33 (5-6) ◽  
pp. 363-367 ◽  
Author(s):  
Wolfgang Barz ◽  
Rita Schlepphorst ◽  
Peter Wilhelm ◽  
Karl Kratzl ◽  
Erich Tengler
Keyword(s):  
Cell Suspension ◽  
Cell Suspension Cultures ◽  
Suspension Cultures ◽  
Ring Cleavage ◽  
Benzoic Acids ◽  
Veratric Acid ◽  
Nitrobenzoic Acids ◽  
Cleavage Reactions ◽  
Derivatives Of ◽  
Soybean Cell

Abstract Uptake of benzoic and salicylic acid by soybean cell suspension cultures is diffusion-mediated and exclusively leads to glucose-esters. - Veratric acid is para-demethylated to vanillic acid which is conjugated to a monoglucoside. - Nitrobenzoic acids are scarcely taken up by cell cultures with glucose-esters as sole products. - Ring-labelled derivatives of vanillylalcohol and creosol are mainly polymerized to insoluble structures, ring cleavage reactions could not be observed.

Synthesis and the structure of 8-tetrahydrofuronium and 8-tetrahydropyronium derivatives of iron bis(dicarbollide)(-I) and their cleavage reactions

2015 ◽  
Vol 44 (4) ◽  
pp. 1571-1584 ◽  
Author(s):  
Irina Lobanova ◽  
Irina Kosenko ◽  
Julia Laskova ◽  
Ivan Ananyev ◽  
Anna Druzina ◽  
...  
Keyword(s):  
Oxonium Derivatives ◽  
Cleavage Reactions ◽  
Derivatives Of

8-oxonium derivatives of iron bis(dicarbollide)(-I) were synthesized and their reactivity towards various nucleophiles was studied.

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