Synthesis of polyesteramides by palladium-catalyzed carbonylation–polycondensation of aromatic diiodides and amino alcohols

Kulkarni, Shrikant M.; Didgikar, Mahesh R.; Chaudhari, Raghunath V.

doi:10.1016/s1381-1169(03)00498-9

Cited by 9 publications

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They included homogeneous and heterogeneous systems and were catalyzed by acid, base, and metals (in solution or suspension), auto-catalyzed, uncatalyzed, and stirred at different rates. Transformations included esterification, ,, transesterification, amidation, imidation, etherification, cyclization, addition, hydrolysis of esters and amides, lactonization, ring cleavage, O-alkylation, acylation, hydrogenation, condensation, carbonylation, and acetalization.…”

Section: Technology For Establishing Alternative Reaction Conditions ...mentioning

confidence: 99%

Toward Rapid, “Green”, Predictable Microwave-Assisted Synthesis

2005

View full text Add to dashboard Cite

Continuous and batch microwave reactors were constructed for efficient, "green" synthesis with low-boiling solvents at high temperature in closed vessels. Capabilities for rapid heating and cooling, concurrent heating and cooling, and differential heating facilitated novel chemical reactions and processes. Commercial microwave systems based on these developments are available. Times required for conventional reactions typically are decreased by 2-3 orders of magnitude. Green processes also have resulted through use of less or no catalyst, readily recyclable solvents, or media and yields that are often higher than normal. Complementary interactive software for calculating optimal conditions was developed.

show abstract

Section: Technology For Establishing Alternative Reaction Conditions ...mentioning

confidence: 99%

Toward Rapid, “Green”, Predictable Microwave-Assisted Synthesis

2005

View full text Add to dashboard Cite

show abstract

“…13,14 The majority of polymers have been prepared by the condensation of diacid monomers or their derivatives with hydroxy compounds. [15][16][17] New kind of heteroaromatic monomers are always focused and employed in the synthesis of advanced polyimide materials. 18,19 In general, the heteroaromatic structure in the main chain of a polymer would impart certain properties to it.…”

Section: Introductionmentioning

confidence: 99%

High performance new heteroaromatic poly(thiourea-imide-ester)s

Kausar

Zulfiqar

Sarwar

2012

High Performance Polymers

View full text Add to dashboard Cite

A new dihydroxy monomer, 1-(2-hydroxypyridin-3-yl)-3-(2-(2-hydroxypyridin-3-yl)-1,3-dioxo-isoindoline-5-carbonyl)thiourea, with preformed trimellitic anhydride chloride-derived imide ring, pyridine and C¼S moieties was synthesized. This compound was exploited to prepare three heteroaromatic poly(thiourea-imide-ester)s (PTIEs) by polycondensation with various diacid chlorides. Structural analysis of polymers was carried out by Fourier transformation infrared and nuclear magnetic resonance spectroscopy. PTIEs were readily soluble in polar solvents such as N,N-dimethylacetamide, dimethylformamide, dimethyl sulfoxide and N-methylpyrrolidone. Inherent viscosity and gel permeation chromatography measurements revealed high molar mass (140 Â 10 2 to 101 Â 10 2 ). One of the polymers showed crystalline behavior according to x-ray diffraction. Thermogravimetric analysis and differential scanning calorimetry were adopted for the thermal analysis of the polymers. Novel aromatic PTIEs possess high weight loss temperature (T 10 ) in the range 524-536 C and glass transition temperature of about 223-230 C.

show abstract