Synthesis and characterization of poly(4-oxyalkylenoxy benzoate)s of different chain length

AbstractThree different monomers starting from p-(4-hydroxy)benzoic acid and 3- chloro-1-propanol, 4-chloro-1-butanol and 6-chloro-1-hexanol, respectively, were synthesized and extensively characterized by means of 1H and 13C NMR, MALDITOF MS and elemental analysis. Subsequently, poly(4-oxyalkylenoxy benzoate)s polymers with different chain length were prepared in bulk starting from the mentioned above monomers, employing Ti(OBu)4 as catalyst, according to the usual two-stage polymerization procedure. The polymers were characterized in terms of chemical structure, molecular mass and thermal behaviour. Tg, Tm and the ability to crystallize were found to be affected by the number of methylene groups per repeat unit and the results were explained mainly on the basis of the increment of the chain flexibility.

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The first synthesis and characterization of new metal-free and metallophthalocyanine containing 33-membered crown ether moieties

Journal of Porphyrins and Phthalocyanines ◽

10.1142/s1088424613500594 ◽

2013 ◽

Vol 17 (06n07) ◽

pp. 473-479 ◽

Cited By ~ 1

Author(s):

Fatma Akkuş ◽

Nilgün Kabay ◽

Yaşar Gök

Keyword(s):

Crown Ether ◽

Spectral Data ◽

Elemental Analysis ◽

Synthesis And Characterization ◽

The Novel ◽

Metal Free ◽

C Nmr

The synthesis and characterization of novel metal-free and metallophthalocyanines, fused symmetrically in non-peripheral positions with four octaoxamacrocycle has been synthesized by cyclotetramerization of the 2,5,8,11,14,20,23,26,29,32-decaoxatricyclo [31.2.2.115,19]octatriconta-1(36),15,17,19(38),33(37),34-hexaene-34,35-dicarbonitrile (5) which was prepared by the reaction of 3,6-bis[2-(2-{2-[2-(toluene-4-sulphonyl)-ethoxy]-ethoxy}-ethoxy)-ethoxy]-phthalonitrile (3) and 1,3-dihydroxybenzene (4). The novel compounds were characterized by using elemental analysis, 1 H , 13 C NMR, IR, UV-vis and MS spectral data.

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Synthesis and characterization of novel metal-free and metallophthalocyanines peripherally fused to four 24-membered tetraoxatetraaza macrocycles

Journal of Porphyrins and Phthalocyanines ◽

10.1002/jpp.291 ◽

2001 ◽

Vol 05 (04) ◽

pp. 367-375 ◽

Cited By ~ 18

Author(s):

S. ZEKİ YILDIZ ◽

HALTİ KANTEKİN ◽

YAŞAR GÖK

Keyword(s):

Elemental Analysis ◽

Metal Salt ◽

Synthesis And Characterization ◽

Organic Base ◽

Metal Free ◽

H Nmr ◽

New Compounds ◽

Derivatives Of ◽

C Nmr

New metal-free 5 and metallophthalocyanines 6-11( M = Cu , Ni , Co , Pb , Zn ) fused in peripheral positions with four 24-membered tetraoxatetraaza macrocycles were prepared by cyclotetramerization of 24,25-dicyano-4,10,13,17-tetra(toluene-p-sulfonyl)-1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22-didicontinehydrobenzo[y][3,9,12,18]tetraaza[1,7,16,22]tetraoxatetradicontine in the presence of the corresponding metal salt or a strong organic base. While the N-tosylated derivatives of the phthalocyanines are soluble in common organic solvents, the detosylated derivative of copper phthalocyaninate is soluble in water. The aggregation properties of the phthalocyanines were also investigated as a function of concentration, solvent and oxidative medium. The new compounds are characterized by a combination of elemental analysis and 1 H NMR, 13 C NMR, IR, UV-vis and MS spectral data.

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Synthesis and Characterization of the Water-Soluble Oleoyl Acetyl Chitosan

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.284-286.1782 ◽

2011 ◽

Vol 284-286 ◽

pp. 1782-1785

Author(s):

Wei Chang Ke ◽

Yi Kun Chen ◽

Guo Xi Xiong ◽

Xiang Hong Peng ◽

Chao Zhu ◽

...

Keyword(s):

Oleic Acid ◽

Acetic Anhydride ◽

Chemical Structure ◽

Water Soluble ◽

Synthesis And Characterization ◽

Nmr Spectrum ◽

Ft Ir ◽

Oleoyl Chloride ◽

C Nmr

Oleoyl chloride was synthesized by oleic acid and thionyl dichloride (SOCl2), and then reacted with chitosan in dichloromethane to obtain the oleoyl chitosan. Novel water-soluble oleoyl acetyl chitosan (OACh) was synthesized using oleoyl chloride reacted with acetic anhydride in pyridine. The chemical structure of the OACh was characterized by FT-IR, 1H and 13C NMR. There existed the peaks at 1743.9 cm-1 (C=O) and 1658.1 cm-1(C=C) in FT-IR spectrum, and the peaks at 170.8, 171.6 and 172.5 ppm which were assigned to the C=O of the oleoyl and acetyl groups in 13C NMR spectrum. The results indicated that OACh had oleoyl as hydrophobic moieties and acetyl as hydrophilic moieties.

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Synthesis and Characterization of 7 - (3 - (substituted-phenoxy) propoxy) Quinazoline Derivatives

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.781-784.1003 ◽

2013 ◽

Vol 781-784 ◽

pp. 1003-1006

Author(s):

He Ping Yan ◽

Gui Ping Ouyang

Keyword(s):

Elemental Analysis ◽

Synthesis And Characterization ◽

H Nmr ◽

Quinazoline Derivatives ◽

C Nmr

Four compounds of 7-(3- (substituted-phenoxy) propoxy) quinazoline compounds, including 7-(3-(2,4-dichlorophenoxy) propoxy)-N-(3-chlorophenyl)-6-methoxyquinazolin-4-amine, 7-(3-(2-chlo-rophenoxy) propoxy)-N-(3-chlorophenyl)-6-methoxyquinazolin-4-amine, 7-(3-(4-chlorophenoxy) prop-oxy)-N-(3-chlorophenyl)-6-methoxyquinazolin-4-amine, 7-(3-(naphthalen-3-yloxy) propoxy)-N-(3-chl-orophenyl)-6-methoxyquinazolin-4-amine, were synthesized fromN-(5-(3-chloropropoxy)-2-cyano-4-methoxyphen-yl)-N, N-dimethylformamidine by cyclization,etheration, in the yield of 45.9%50.6%56.34% and 80.6% respectively. Their structures were characterized by IR,1H NMR,13C NMR, MS and elemental analysis.

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Synthesis and Characterization of Novel Polyurethanes Based on N,N'-1,2-Ethanediylbis-(4-Hydroxy-Pentanamide) and 4-Hydroxy-N-(2-Hydroxyethyl)-Pentanamide

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.277.112 ◽

2011 ◽

Vol 277 ◽

pp. 112-119 ◽

Cited By ~ 2

Author(s):

Mochamad Chalid

Keyword(s):

Functional Groups ◽

Elemental Analysis ◽

Levulinic Acid ◽

Synthesis And Characterization ◽

H Nmr ◽

Backbone Structure ◽

C Nmr

As diols, N,N'-1,2-ethanediylbis-(4-hydroxy-pentanamide) (1) and 4-hydroxy-N-(2-hydroxyethyl)-pentanamide (2)) are versatile precursors for the manufacture of bio-polymers. Polymer design, by exploiting the variation in structure of both diol and di-isocyanate monomers, such as backbone structure and presence of functional groups, appears to be a promising biopolymer engineering pathway to synthesize polyurethanes. Both diols (1) and (2) were then polymerized by reaction with aliphatic and aromatic di-isocyanates at 140 °C in (N,N-dimethylacetamide (DMA) solvents using triethylamine (TEA) catalysts, to obtain novel polyurethanes. The products were characterized by FTIR, 1H-NMR, 13C-NMR, and Elemental Analysis. This working has created a new chance to synthesis bio-polyurethanes based on levulinic acid, as one of biomass compounds

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Synthesis and Characterization of All Renewable Resources Based Branched Polyester: Poly(2,5-furandicarboxylic acid-co-glycerol)

ISRN Polymer Science ◽

10.1155/2013/645169 ◽

2013 ◽

Vol 2013 ◽

pp. 1-4 ◽

Cited By ~ 7

Author(s):

Ananda S. Amarasekara ◽

Ashfaqur Razzaq ◽

Paul Bonham

Keyword(s):

Elemental Analysis ◽

Renewable Resources ◽

Polyester Resin ◽

Synthesis And Characterization ◽

Ft Ir ◽

Furandicarboxylic Acid ◽

C Nmr

Condensation of all renewable resources based monomers 2,5-furandicarboxylic acid and glycerol in the presence of 2 mol% Sb2O3 catalyst at 210°C gives a branched polyester resin in 70% yield. This resin was characterized by elemental analysis, 1H, 13C NMR, FT-IR, and TGA-DTG.

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Synthesis and characterization of some 1,2,4-triazole-3(4h)-thiones obtained from intramolecular cyclization of new 1-(4-(4-x-phenylsulfonyl)benzoyl)-4-(4-iodophenyl)- thiosemicarbazides

Journal of the Serbian Chemical Society ◽

10.2298/jsc091221122c ◽

2010 ◽

Vol 75 (11) ◽

pp. 1463-1471 ◽

Cited By ~ 18

Author(s):

Olga Cretu ◽

Stefania Barbuceanu ◽

Gabriel Saramet ◽

Constantin Draghici

Keyword(s):

Benzoic Acid ◽

1H Nmr ◽

Intramolecular Cyclization ◽

Elemental Analysis ◽

13C Nmr ◽

Spectral Methods ◽

Heterocyclic Compounds ◽

Synthesis And Characterization ◽

Naoh Solution

This paper presents new heterocyclic compounds from the class of 1,2,4-triazole-3(4H)-thione which were obtained by intramolecular cyclization, in basic media of the some acylthiosemicarbazides containing diphenylsulfone moieties. The new 1-(4-(4-X-phenylsulfonyl)benzoyl)-4- (4-iodophenyl)-thiosemicarbazides (7a-c) were obtained by the reaction of 4-(4-X-phenylsulfonyl)-benzoic acid hydrazides (6a-c) (X=H, Cl or Br) with 4-iodophenylisothiocyanate. The cyclization of the acylthiosemicarbazides 7a-c in the presence of an 8 % NaOH solution resulted in the formation of the new 5-(4-(4-X-phenylsulfonyl)phenyl)-4-(4-iodophenyl)-2H-1,2,4-triazole-3(4H)-thiones (8a-c). The structures of the newly synthesized compounds were elucidated by spectral methods (IR, UV-Vis, 1H-NMR, 13C-NMR and MS spectroscopy) and elemental analysis.

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Semi-Crystalline Hydrophobic Polyamidoamines: A New Family of Technological Materials?

Polymers ◽

10.3390/polym13071018 ◽

2021 ◽

Vol 13 (7) ◽

pp. 1018

Author(s):

Massimo Marcioni ◽

Jenny Alongi ◽

Elisabetta Ranucci ◽

Mario Malinconico ◽

Paola Laurienzo ◽

...

Keyword(s):

Maximum Stress ◽

Water Resistance ◽

Prolonged Exposure ◽

Water Soluble ◽

Synthesis And Characterization ◽

Molecular Weights ◽

New Family ◽

Methylene Groups ◽

Methane Flame

The hitherto known polyamidoamines (PAAs) are not suitable as structural materials because they are usually water-soluble or swellable in water. This paper deals with the synthesis and characterization of semi-crystalline hydrophobic PAAs (H-PAAs) by combining different bis-sec-amines with bis-acrylamides obtained from C6–C12 bis-prim-amines. H-PAAs were initially obtained in a solution of benzyl alcohol, a solvent suitable for both monomers and polymers. Their number average molecular weights, M¯n, which were determined with 1H-NMR by evaluating the percentage of their terminal units, varied from 6000 to >10,000. The solubility, thermal properties, ignitability and water resistance of H-PAAs were determined. They were soluble in organic solvents, semi-crystalline and thermally stable. The most promising ones were also prepared using a bulk process, which has never been previously reported for PAA synthesis. In the form of films, these H-PAAs were apparently unaffected by water. The films underwent tensile and wettability tests. They showed similar Young moduli (260–263 MPa), whereas the maximum stress and the stress at break depended on the number of methylene groups of the starting bis-acrylamides. Their wettability was somewhat higher than that of common Nylons. Interestingly, none of the H-PAAs considered, either as films or powders, ignited after prolonged exposure to a methane flame.

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