Cyano esters and malononitriles. IV. Cyano(fluorenyl)acetohydrazides and fluorenylpyrazolones

1977 ◽  
Vol 30 (10) ◽  
pp. 2255 ◽  
Author(s):  
N Latif ◽  
N Mishriky ◽  
M Hammad
Keyword(s):  
Phthalic Anhydride ◽  
Sodium Borohydride ◽  
Succinic Anhydride ◽  
Reductive Cleavage ◽  
Open Chain ◽  
Chain Compounds

Cyano(fluoren-9-yl)acetohydrazides cyclize readily under acid or basic conditions to give 3-amino-4-(9-substituted fluoren-9-yl)pyrazol-5(4H)- ones (3). Upon thermolysis of the hydrazides the pyrazolones and/or dimeric products are produced.��� The cyanoacetohydrazides condense with phthalic anhydride to give the 2-(fluoren-9-yl)-N-phthalimidoacetamides(7), whereas, with succinic anhydride, the open-chain compounds (10) are obtained which upon thermolysis afford the dimeric compounds (6). The acetamides (7) undergo unusual reductive cleavage with sodium borohydride affording the fluorenylpyrazolones (3). Electronic, infrared and N.M.R. spectra of the products are discussed.

scholarly journals Preparation and Characterization of Some Hyperbranched Polyesteramides/Montmorillonite Nanocomposites

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Amal Amin ◽  
Moshera Samy
Keyword(s):  
Maleic Anhydride ◽  
Phthalic Anhydride ◽  
Succinic Anhydride ◽  
Thermal Analyses ◽  
Hyperbranched Polymers ◽  
H Nmr ◽  
Tga And Dsc ◽  
Montmorillonite Nanocomposites

Different polyesteramides hyperbranched polymers (HPEA1-6)/montomorillonite clay (MMT) nanocomposites were prepared with three different loading contents of clay (4, 10, and 15 wt%). The obtained nanocomposites were characterized via XRD, thermal analyses, and TEM. Generally, intercalation behavior was observed. The hyperbranched polyesteramides (HPEA1-6) were originally prepared by the bulky reaction between maleic anhydride (MAn), succinic anhydride (ScAn), and phthalic anhydride (PhAn) with either diethanolamine (DEA) or diisopropanolamine (DiPA). The resulting hyperbranched polyesteramides (HPEA1-6) were characterized by GPC, IR,1H-NMR, TGA, and DSC.

AN IMPROVED PREPARATION OF ω-HYDROXY ALIPHATIC ACIDS AND THEIR ESTERS

1960 ◽  
Vol 38 (10) ◽  
pp. 1976-1982 ◽  
Author(s):  
D. G. M. Diaper ◽  
D. L. Mitchell
Keyword(s):  
Sodium Borohydride ◽  
Reductive Cleavage ◽  
Aliphatic Acids ◽  
Aliphatic Esters ◽  
High Yields

Reductive cleavage of the ozonides of aliphatic acids and their esters by sodium borohydride or by hydrogenation produces ω-hydroxy aliphatic acids and ω-hydroxy aliphatic esters, respectively, in high yields.

THE SYNTHESIS OF SOME INDOLYLALKYLAMINOALCOHOLS

1960 ◽  
Vol 38 (9) ◽  
pp. 1434-1438 ◽  
Author(s):  
Gerassimos Frangatos ◽  
Geza Kohan ◽  
Francis L. Chubb
Keyword(s):  
Lithium Aluminum Hydride ◽  
Aluminum Hydride ◽  
Reductive Cleavage ◽  
Lithium Aluminum ◽  
Carbonyl Groups ◽  
Open Chain ◽  
Hydride Reduction

A series of 3-indolylalkylaminoalcohols have been obtained from the lithium aluminum hydride reduction of the amides prepared by the reaction of 3-indoleglyoxylyl chloride and 2-methyl-3-indoleglyoxylyl chloride with primary aminoalcohols. When acetone was used as solvent in the reaction of 3-indoleglyoxylyis chloride and either 2-aminoethanol or 3-aminopropanol, the solvent participated in the reaction resulting in the formation of 2,2-dimethyl-3-(3-indoleglyoxyl)oxazolidine and 2,2-dimethyl-3-(3-indoleglyoxyl)tetrahydro-1,3-oxazine respectively. When the latter two compounds were reduced by lithium aluminum hydride, both carbonyl groups were completely reduced and reductive cleavage of the oxazolidine and tetrahydro-1,3-oxazine rings occurred to form the corresponding open-chain alcohols.

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