Microwave-assisted and classical heating polycondensation reaction of bis(p-amido benzoic acid)-N-trimellitylimido-L-leucine with diisocyanates as a new method for preparation of optically active poly(amide imide)s

2004 ◽  
Vol 93 (4) ◽  
pp. 1647-1659 ◽  
Author(s):  
Shadpour Mallakpour ◽  
Fatemeh Rafiemanzelat
Keyword(s):  
Benzoic Acid ◽  
Optically Active ◽  
New Method ◽  
Polycondensation Reaction ◽  
Microwave Assisted

scholarly journals Microwave-assisted synthesis and characterization of some optically active poly(ester-imide) thermoplastic elastomers

e-Polymers ◽  
2009 ◽  
Vol 9 (1) ◽  
Author(s):  
Saeed Zahmatkesh ◽  
Abdol Reza Hajipour
Keyword(s):  
Thermal Analyses ◽  
Specific Rotation ◽  
Thermoplastic Elastomers ◽  
Optically Active ◽  
Microwave Assisted Synthesis ◽  
H Nmr ◽  
Microwave Assisted ◽  
Diacid Chloride ◽  
Elemental Analyses

AbstractPyromellitic dianhydride (1) was reacted with L-leucine (2) to result in [N,N'-(pyromellitoyl)-bis-L-leucine diacid] (3). This compound (3) was converted to N,N'-(pyromellitoyl)-bis-L-leucine diacid chloride (4) by reaction with thionyl chloride. The microwave-assisted polycondensation of this diacid chloride (4) with polyethyleneglycol-diol (PEG-200) and/or three synthetic bisphenols furnish a series of new PEIs and Co-PEIs in a laboratory microwave oven (Milestone). The resulting polymers and copolymers have inherent viscosities in the range of 0.31- 0.53 dl g-1. These polymers are optically active, thermally stable and soluble in polar aprotic solvents such as DMF, DMSO, NMP, DMAc and sulfuric acid. All of the above polymers were fully characterized by IR spectroscopy, 1H NMR spectroscopy, elemental analyses, specific rotation and thermal analyses. Some structural characterizations and physical properties of these optically active PEIs and Co-PEIs are reported.

Novel optically active poly(amide-imide)s with tetrahydropyrimidinone and tetrahydro-2-thioxopyrimidine moieties by microwave-assisted polycondensation

2001 ◽  
Vol 80 (13) ◽  
pp. 2416-2421 ◽  
Author(s):  
Shadpour E. Mallakpour ◽  
Abdol-Reza Hajipour ◽  
Khalil Faghihi ◽  
Naser Foroughifar ◽  
Javad Bagheri
Keyword(s):  
Optically Active ◽  
Microwave Assisted

A new method of preparing optically active alkyl phenyl phosphonates

1978 ◽  
Vol 19 (39) ◽  
pp. 3741-3742 ◽  
Author(s):  
Toru Koizumi ◽  
Hiroko Amitani ◽  
Eiichi Yoshii
Keyword(s):  
Optically Active ◽  
New Method

Studies of the optically active compunds of anacardiaceae exudates. Vi. The exudate from Pentaspadon officinalis Holmes

1959 ◽  
Vol 12 (2) ◽  
pp. 234 ◽  
Author(s):  
JA Lamberton
Keyword(s):  
Benzoic Acid ◽  
Optically Active

The oil from the wood of Pentaspadon officinalis Holmes (family Anacardiaceae) consists largely of 2-hydroxy-6-(heptadeca-cis-8',cis,-11'-dieny)benzoic acid. It is very similar to the oil from P. motleyi Hook. f. and does not contain optically active cyclohexenones of the type found in Campnosperma exudates.

Analysis of Ni, Cr, Cu, Pb and Cd in marine bioindicators using mixed-micelles with microwave assisted micellar extraction and GF-AAS

2016 ◽  
Vol 8 (39) ◽  
pp. 7141-7149 ◽  
Author(s):  
A. M. Hernández-Martínez ◽  
C. Padrón-Sanz ◽  
M. E. Torres-Padrón ◽  
Z. Sosa-Ferrera ◽  
J. J. Santana-Rodríguez
Keyword(s):  
Heavy Metals ◽  
Mytilus Galloprovincialis ◽  
Mixed Micelles ◽  
New Method ◽  
Micellar Extraction ◽  
Nereis Diversicolor ◽  
Microwave Assisted ◽  
Gf Aas ◽  
Triton X

A new method has been developed for the extraction and determination of the heavy metals Ni, Cu, Cr, Pb, and Cd in mussels (Mytilus galloprovincialis) and polychaetes (Nereis diversicolor), using biodegradable mixed-micelles (SDS and Triton X-100) as the extractant, and GF-AAS analysis.

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