scholarly journals Simple synthesis of 3-acyl-5-alkyl(aryl)isoxazoles from terminal alkynes and nitrates of alkaline metals or ammonium

2005 ◽  
Vol 3 (3) ◽  
pp. 370-376 ◽  
Author(s):  
Victor Rogachev ◽  
Victor Filimonov ◽  
Julya Kulmanakova ◽  
Mehman Yusubov ◽  
Wolfgang Bender
Keyword(s):  
Acetic Acid ◽  
Simple Synthesis ◽  
Terminal Alkynes ◽  
Alkyl Aryl ◽  
Alkaline Metals ◽  
General Synthesis

AbstractA simple and general synthesis of 3-acyl-5-alkyl(aryl)isoxazoles by reaction of terminal alkynes with nitrates in acetic acid in the presence of SO3 or alkaline salts is described.

scholarly journals Green ultrasound-assisted three-component click synthesis of novel 1H-1,2,3-triazole carrying benzothiazoles and fluorinated-1,2,4-triazole conjugates and their antimicrobial evaluation

2017 ◽  
Vol 67 (3) ◽  
pp. 309-324 ◽  
Author(s):  
Nadjet Rezki ◽  
Mohamed Reda Aouad
Keyword(s):  
Antimicrobial Activity ◽  
Cycloaddition Reaction ◽  
Dipolar Cycloaddition ◽  
Terminal Alkynes ◽  
One Pot ◽  
Alkyl Aryl ◽  
Antimicrobial Evaluation ◽  
Ultrasound Assisted ◽  
Click Synthesis

AbstractThe present study describes an efficient and ecofriendly, ultrasound, one-pot click cycloaddition approach for the construction of a novel series of 1,4-disubstituted-1,2,3-triazoles tethered with fluorinated 1,2,4-triazole-benzothiazole molecular conjugates. It involved three-component condensation of the appropriate bromoacetamide benzothiazole, sodium azide and 4-alkyl/aryl-5-(2-fluorophenyl)-3-(prop-2-ynylthio)-1,2,4-triazoles4a-ethrough a Cu(I)-catalyzed 1,3-dipolar cycloaddition reaction. This approach involvesin situgeneration of azidoacetamide benzothiazole, followed by condensation with terminal alkynes in the presence of CuSO4/Na-ascorbate in aqueous DMSO under both conventional and ultrasound conditions. Some of the designed 1,2,3-triazole conjugates6a-owere recognized for their antimicrobial activity against some bacterial and fungal pathogenic strains.

Synthesen von Heterocyclen, CCIV1 Reaktionen mit cyclischen Oxalylverbindungen, XIX2 Eine einfache Synthese von 5-Benzoyl-6-phenyl-1.3-dioxin-4-onen / Syntheses of Heterocycles, CCIV1 Reactions of Cyclic Oxalyl Compounds, XIX 2 A Simple Synthesis of 5 Benzoyl-6-phenyl-1,3-dioxin-4-ones

1977 ◽  
Vol 32 (6) ◽  
pp. 701-704 ◽  
Author(s):  
Gert Kollenz ◽  
Erich Ziegler ◽  
Walter Ott ◽  
Gert Kriwetz
Keyword(s):  
Acetic Acid ◽  
Methyl Ester ◽  
Acrylic Acid ◽  
Acid Methyl Ester ◽  
The Other ◽  
Simple Synthesis ◽  
Acid Methyl ◽  
Other Hand

4-Benzoyl-5-phenyl-2,3-dihydrofuran-2,3-dione (1) reacts with aldehydes or ketones via the acylketene-intermediate (2) yielding the 1,3-dioxin-4-ones (3). The aldehyde derivatives (3 a-e) can be converted into the anilino-chalcone (5) or the anilino acrylic acid (6) by treating with aniline at 20 °C. 6 and diazomethane combine to the acrylic acid methyl ester (7), which by heating (200 °C) is cyclisized to the quinolin-4-ole (8). On the other hand, the keto derivatives 3f-h and aniline give the dibenzoyl acetic acid anilide (9).

Effect of donor modification on the photo-physical and photo-voltaic properties of N-alkyl/aryl amine based chromophores

2019 ◽  
Vol 43 (23) ◽  
pp. 8970-8981 ◽  
Author(s):  
Manoj Jadhav ◽  
Jayraj V. Vaghasiya ◽  
Dinesh Patil ◽  
Saurabh S. Soni ◽  
Nagaiyan Sekar
Keyword(s):  
Acetic Acid ◽  
Conversion Efficiency ◽  
Alkyl Aryl ◽  
Emission Properties ◽  
Aryl Amine ◽  
Photo Voltaic ◽  
Electron Withdrawing Group ◽  
Donor Moiety

Six push–pull sensitizers (MD1 to MD6) having rhodanine-3-acetic acid acting as an electron withdrawing group and N-alkyl/aryl amine as a donor moiety were planned and prepared to rationalize the influence of donor alteration on absorption/emission properties and photon to current conversion efficiency (η).

Versuche zur Oxidation von 1.5-Benzothiazepin — bzw. 1.5-Benzoxazepin- 2.4-3H.5H-dionen / Investigations Concerning Oxidation Reactions of 1,5-Benzthiazepin — and 1,5-Benzoxazepin- 2,4-3H,5H -diones

1984 ◽  
Vol 39 (3) ◽  
pp. 384-389 ◽  
Author(s):  
G. Kollenz ◽  
P. Seidler
Keyword(s):  
Acetic Acid ◽  
Malonic Acid ◽  
Reaction Pathway ◽  
Simple Synthesis ◽  
Oxidation Reactions ◽  
Acetic Acid Lead ◽  
Malonic Acid Derivatives

Attempts to oxidize the 1,5-benzothiazepin-2,4-3H,5H-dione (1) using NaNO2/Acetic acid lead to isolation of two ring contracted products, namely the 1,4-benzthiazin-derivatives 4 and 5. A reasonable reaction pathway concerning the formation of these compounds is discussed. A simple synthesis of 6-methyI-1,5-benzoxazepin-2,4-3H,5H-dione (13) is described, the transformation of which into the corresponding vic. trione fails, even using a great number of oxidizing procedures. In some cases so far unknown malonic acid derivatives 14, 15 and 16 can be obtained.

ChemInform Abstract: A General Synthesis of 4-Alkyl/Aryl-Substituted Saccharins.

ChemInform ◽  
2010 ◽  
Vol 23 (19) ◽  
pp. no-no
Author(s):  
C. SUBRAMANYAM ◽  
M. R. BELL
Keyword(s):  
Alkyl Aryl ◽  
General Synthesis

A general synthesis of esters of acryloyl acetic acid and their homologs.

1972 ◽  
Vol 13 (27) ◽  
pp. 2755-2758 ◽  
Author(s):  
Gilbert Stork ◽  
R.Nath Guthikonda
Keyword(s):  
Acetic Acid ◽  
General Synthesis
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