scholarly journals Effective methods for the synthesis of hydrazones, quinazolines, and Schiff bases: reaction monitoring using a chemometric approach

RSC Advances ◽  
2020 ◽  
Vol 10 (63) ◽  
pp. 38566-38577
Author(s):  
Jana Pisk ◽  
Ivica Đilović ◽  
Tomica Hrenar ◽  
Danijela Cvijanović ◽  
Gordana Pavlović ◽  
...  
Keyword(s):  
Solid State ◽  
Schiff Bases ◽  
Reaction Monitoring ◽  
Melt Synthesis ◽  
Chemometric Approach

We compare different routes to prepare hydrazones, quinazolines, and hydrazone-Schiff bases: solution-based, vapor-mediated, mechanochemical, and solid-state melt synthesis.

scholarly journals Four Thermochromic o-Hydroxy Schiff Bases of α-Aminodiphenylmethane: Solution and Solid State Study

Crystals ◽  
2017 ◽  
Vol 7 (1) ◽  
pp. 25 ◽  
Author(s):  
Marija Zbačnik ◽  
Katarina Pičuljan ◽  
Jelena Parlov-Vuković ◽  
Predrag Novak ◽  
Andreas Roodt
Keyword(s):  
Solid State ◽  
Schiff Bases ◽  
State Study

Molybdenum(VI) complexes of Schiff bases derived from salicylaldehyde and 2-aminoethanethiol (cysteamine)

1984 ◽  
Vol 37 (11) ◽  
pp. 2235 ◽  
Author(s):  
W Goh ◽  
M Lim
Keyword(s):  
Solid State ◽  
Dimethyl Sulfoxide ◽  
Schiff Bases ◽  
Empirical Formula ◽  
Oxidation Product ◽  
Tetramethylammonium Hydroxide ◽  
Crystalline Solid ◽  
Pale Yellow

The reaction of salicylaldehyde and 2-aminoethanethiol (cysteamine) in methanol results in two distinct products: a yellow oil, 2-(2-mercaptoethyliminomethyl)phenol, and a yellow crystalline solid, 2,2'-[dithiobis(ethane-1,2-diyl)bis(nitrilomethylidyne)]bisphenol, which is an oxidation product of the former. The latter compound may also be prepared from salicylaldehyde and 2,2'-dithio-bis(ethylamine) (cystamine) in methanol. 2-(2''-Mercaptoethyliminomethyl)phenol reacts with MoO2(acac)2 (acac = pentane-2,4-dionate) in methanol to yield a red crystalline solid with empirical formula MoO2(mep) [mep = 2-(2"- mercaptoethyliminomethyl)phenolate]. This red solid exists as a dimer in the solid state. It forms adducts with dimethyl sulfoxide, hexamethylphosphoric acid triamide and pyridine. 2,2'-[Dithiobis(ethane-1,2-diyl)bis(nitrilomethylidyne)]bisphenol reacts with MoO2(acac)2 to yield a pale yellow solid. It is a monomeric compound whose formula is MoO2(dbp) {dbp = 2,2'- [dithiobis(ethane-1,2-diyl)bis(nitrilomethylidyne)]bisphenolate}. It does not form an adduct and is decomposed by an excess of tetramethylammonium hydroxide in methanol.

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