Azométhines et halochromie

Smets, G.; Delvaux, Anne

doi:10.1002/bscb.19470560112

Cited by 16 publications

(1 citation statement)

References 5 publications

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“…Further, we have also communicated studies on TLC of closely related organic compounds [4]. Review of the literature, shows that many researchers have used this method to synthesize the varied aldimines of salicyladehyde and varied anilines and heteroaromatic amines [5]. A solvent free condensation of different aldehydes with two different piperazine based amines, gave a series of imines [6][7].…”

Section: Introductionmentioning

confidence: 99%

Studies on Synthesis of Aldimines: Part-I. Synthesis, Characterization and Biological Activity of Aldimines from Benzaldehyde with variedly substituted anilines

Patil¹,

Patil²,

Patil

2018

RRST

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A conventional condensation reaction of an aromatic aldehyde, Benzaldehyde with seven different aromatic amines viz. Aniline, 2-Choro-aniline, 3-Choro-aniline, 4-Choro-aniline, 2-Nitro-aniline, 3-Nitro-aniline and 4-Nitro-aniline and reacted efficiently to synthesize a series of Aldmines, I to VII, in moderate to high yield and high purity. The reaction was monitored and the products were analyzed by employing the TLC technique. All the products obtained were characterized by their colour, physical constant, TLC, elemental analysis and spectral (UV-Vis and FTIR) method. The synthesized Aldimines were subjected to in vitro biological activity.

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Section: Introductionmentioning

confidence: 99%

Studies on Synthesis of Aldimines: Part-I. Synthesis, Characterization and Biological Activity of Aldimines from Benzaldehyde with variedly substituted anilines

Patil¹,

Patil²,

Patil

2018

RRST

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Azomethines. II. Courbes d'absorption et constitution de bisazométhines

Sevens

Smets

1948

Bulletin des Soc Chimique

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Photochemische Reaktionen von 3‐Phenyl‐2 H ‐1,4‐benzoxazin‐2‐on und von verwandten Verbindungen im Singulett‐ und Triplett‐Zustand

Tauer

Grellmann

1986

Chem. Ber.

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Bei der Belichtung von 3-Phenyl-2H-1,4-benzoxazin-2-on (6) in Losung entsteht unter COAbspaltung 2-Phenylbenzoxazol (2). Die Reaktion verlauft im elektronisch angeregten Singulettzustand iiber andere Zwischenstufen als im angeregten Triplettzustand von 6. In protischen Losungsmitteln entsteht unter RingBffnung iiber den Triplettzustand von 6 noch die Schiffsche Base N-Benzyliden-2-aminophenol(7). Einige bei der Photolyse von 6 entstehende Zwischenverbindungen wurden in kinetischen Experimenten nachgewiesen und charakterisiert. Es wird kurz daruber berichtet, daB die Photolyse des analogen Phenylbenzothiazinons ahnlich verlauft wie die Photolyse von 6, wahrend entsprechende Phenylchinoxalinone anders reagieren. Photochemical Reactions of 3-Phenyl-2H-1,4benzoxazin-2-one and of Related Compounds in the Singlet and Triplet StateIllumination of 3-phenyl-2H-l,4-benzoxazin-2-one (6) leads to the formation of 2-phenylbenzoxazole (2) and CO. From the excited singlet state of 6 other transients are formed than from its triplet state. In protic solvents in addition to 2, the Schiff base N-benzylidene-2-aminophenol (7) is formed under ring opening from the triplet state of 6. In kinetic experiments some transients emerging during the photolysis of 6 were observed and characterized. We show qualitatively that the sulfur-containing analogue to 6, phenylbenzothiazinone, reacts similar to 6 and that corresponding phenylquinoxalinones have different properties.Die vorliegende Arbeit schliel3t an friihere Untersuchungen aromatischer Schflscher Basen an, die folgendes gezeigt haben? Belichtet man Losungen der Schiffschen Basen 1 in Methylcyclohexan (MCH), so entsteht in Gegenwart uon Sauerstoff2-Phenylbenzoxazol(2) und Aldehyd (R' = H) bzw. Keton [GI. (l)].Die Photoreaktion (1) verlauft uber radikalische Zwischenstufen und beginnt mit einem Angriff des Sauerstoffs am aliphatischen a-C-Atom der CarbimidoylgruppeIn entgaster Losung bildet sich 2 nicht. Es lag deshalb nahe, ahnliche Schiffsche Basen zu untersuchen, die am a-C-Atom bereits Sauerstoff tragen. Kondensiert man zu diesem Zweck 2-Aminophenol(3) mit Phenylglyoxylsaure (4), dann erhalt man als stabiles Endprodukt 3-Phenyl-2H-1 ,Cbenzoxazin-2-on (6). Die Schiffsche

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Azométhines et halochromie

Cited by 16 publications

References 5 publications

Studies on Synthesis of Aldimines: Part-I. Synthesis, Characterization and Biological Activity of Aldimines from Benzaldehyde with variedly substituted anilines

Studies on Synthesis of Aldimines: Part-I. Synthesis, Characterization and Biological Activity of Aldimines from Benzaldehyde with variedly substituted anilines

Azomethines. II. Courbes d'absorption et constitution de bisazométhines

Photochemische Reaktionen von 3‐Phenyl‐2 H ‐1,4‐benzoxazin‐2‐on und von verwandten Verbindungen im Singulett‐ und Triplett‐Zustand

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