Diethyl malonate as leaving group: Facile synthesis of some 1,3,4-benzotriazepines and benzotriazepinones

1969 ◽  
Vol 47 (3) ◽  
pp. 489-494 ◽  
Author(s):  
C. Podesva ◽  
G. Kohan ◽  
K. Vagi
Keyword(s):  
Double Bond ◽  
Hydrazine Hydrate ◽  
Diethyl Malonate ◽  
Facile Synthesis ◽  
Leaving Group ◽  
Diethyl Ethoxymethylenemalonate ◽  
Bond Isomers

Reaction between 2-(2′,2′-bis-carboethoxyvinylamino)-benzophenones, resulting from the condensation of 2-aminobenzophenones with diethyl ethoxymethylenemalonate, and hydrazine hydrate yields 5-hydroxy-5-phenyl-1,3,4-3H-4,5-dihydrobenzotriazepines or their double bond isomers. These products on acetylation afford O,N,N-triacetates, which on treatment with ammonia are transformed into 4-phenylquinazolines. Structure proof of these substances is reported.

Sustainable Waterborne Vanillin-Eugenol-Acrylate Miniemulsion with Suitable Antibacterial Properties as Substitutes for Styrene-Acrylate Emulsion

2021 ◽  
Author(s):  
Lei Zhang ◽  
Jian-Zhong Ma ◽  
Bin Lyu ◽  
Yuehong Zhang ◽  
Vijay Kumar Thakur
Keyword(s):  
Double Bond ◽  
Antibacterial Properties ◽  
Solvent Free ◽  
Facile Synthesis ◽  
Acrylate Emulsion

In this work, we have prepared solvent-free, facile synthesis of renewable aromatic monomers, double bond modified vanillin (DV) and double bond modified eugenol (DE). The resulting DV and DE were...

Facile synthesis of tremelliform Co0.85Se nanosheets: An efficient catalyst for the decomposition of hydrazine hydrate

2012 ◽  
Vol 119-120 ◽  
pp. 139-145 ◽  
Author(s):  
Cheng-Cheng Liu ◽  
Ji-Ming Song ◽  
Jing-Feng Zhao ◽  
Hua-Jun Li ◽  
Hai-Sheng Qian ◽  
...  
Keyword(s):  
Hydrazine Hydrate ◽  
Facile Synthesis ◽  
Efficient Catalyst

scholarly journals A Facile Synthesis of Pyrido[2′,3′:3,4]pyrazolo[1,5-a]pyrimidine and Pyrido[2′,3′:3,4]pyrazolo[5,1-c][1,2,4]triazine Bearing a Thiophene Moiety

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Tilal Elsaman ◽  
Mohamed Fares ◽  
Hatem A. Abdel-Aziz ◽  
Mohamed I. Attia ◽  
Hazem A. Ghabbour ◽  
...  
Keyword(s):  
Hydrazine Hydrate ◽  
Diazonium Salt ◽  
Facile Synthesis ◽  
Amine Derivative ◽  
Thiophene Moiety ◽  
Active Methylene

Pyridinone derivative8was synthesized and transformed into the respective chloropyridine9, which was allowed to react with hydrazine hydrate to afford pyrazolo[3,4-b]pyridin-3-amine derivative11. Compound11was used as a key intermediate for a facile synthesis of the title compounds14,15,17,21a,b, and24a–cwhere the reaction of11with some 1,3-dielecrophiles resulted in the formation of pyrido[2′,3′:3,4]pyrazolo[1,5-a]pyrimidines14,15, and17, whereas diazotization of compound11gave the respective diazonium salt18which was coupled with some active methylene-containing compounds to give the corresponding hydrazones19a,band22a–c. Cyclization of the latter hydrazones yielded the pyrido[2′,3′:3,4]pyrazolo[5,1-c][1,2,4]triazines21a,band24a–c, respectively.

scholarly journals Combining liquid chromatography with ozone-induced dissociation for the separation and identification of phosphatidylcholine double bond isomers

2015 ◽  
Vol 407 (17) ◽  
pp. 5053-5064 ◽  
Author(s):  
Rachel L. Kozlowski ◽  
J. Larry Campbell ◽  
Todd W. Mitchell ◽  
Stephen J. Blanksby
Keyword(s):  
Liquid Chromatography ◽  
Double Bond ◽  
Bond Isomers

Synthesis, separation and N.M.R. spectra of three double bond isomers of leukotriene a methyl ester

1980 ◽  
Vol 21 (42) ◽  
pp. 4123-4126 ◽  
Author(s):  
S.Richard Baker ◽  
William B. Jamieson ◽  
Stuart W. McKay ◽  
Sarah E. Morgan ◽  
David M. Rackham ◽  
...  
Keyword(s):  
Double Bond ◽  
Methyl Ester ◽  
Bond Isomers

Facile synthesis of graphene sheets from fluorinated graphite

RSC Advances ◽  
2015 ◽  
Vol 5 (50) ◽  
pp. 40148-40153 ◽  
Author(s):  
Li Chen ◽  
Jiaojiao Lei ◽  
Fuhui Wang ◽  
Guochao Wang ◽  
Huixia Feng
Keyword(s):  
Hydrazine Hydrate ◽  
Graphene Sheets ◽  
Facile Synthesis ◽  
Fluorinated Graphite ◽  
Chemical Exfoliation

The chemical exfoliation of FGi by hydrazine hydrate to create graphene sheets.

Synthesis and odour evaluation of double‐bond isomers of DAMASCENOLIDE, 4‐(4‐methylpent‐3‐en‐1‐yl)‐2(5 H )‐furanone, which has a citrus‐like odour

2020 ◽  
Vol 35 (3) ◽  
pp. 341-349 ◽  
Author(s):  
Yamato Miyazawa ◽  
Teruhisa Ohashi ◽  
Kenji Kawaguchi ◽  
Naoko Tanaka ◽  
Ryo Katsuta ◽  
...  
Keyword(s):  
Double Bond ◽  
Bond Isomers

Acylation of the 4,5- and 5,6-double bond isomers of 3-steroidal thiazolidines

Tetrahedron ◽  
1981 ◽  
Vol 37 (20) ◽  
pp. 3463-3466 ◽  
Author(s):  
K.B. Sloan ◽  
N. Bodor ◽  
J. Zupan
Keyword(s):  
Double Bond ◽  
Bond Isomers
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