Iranian Journal of Organic Chemistry IranJOC Vol. 7, No. 4, 2015 Contents Graphical Abstracts Synthesis of fused [1,3]oxazines from 1,3-dichloro aceton, activated acetylenes pp 1623-1625 and N-methyl imidazole Anvar Mirzaei* and and Hana Khanbabaei Chemistry Department, Fculty of Science, Sanandaj Branch, Islamic Azad University, PO Box 618, Sanandaj, Iran. R R' R O N CH2Cl2 N + + Cl Cl Cl rt, 24 hr O N N R' Cl 1 2 3 4 Dynamic 1H-NMR study of synthesized enamines from reaction between pp 1627-1629 isocyanides and N,N'-dimethylbarbituric acid Ghasem Marandi*a, Malek Taher Maghsoodloub and Ashraf Moradib a Shahid Bakeri High Education Center of Miandoab, Urmia University, Urmia, Iran. b Department of Organic Chemistry, Faculty of Science, the University of Sistan and Baluchestan, P. O. Box 98135-674, Zahedan, Iran. O O H C CH H3C CH3 3 N N 3 N N R N C + O O O O 1 2 H N H 3 R Density functional theory study of molecular structure, chemical reactivity and pp 1631-1640 radical scavenging potency of (+)-curcutetraol Mehdi Nabati* Chemistry Department, Faculty of Science, Azarbaijan Shahid Madani University, Tabriz, Iran. 1619 Green synthesis of stable diionic compounds from 4,4,4-trifluoro-1-thiophen-2-yl- pp 1641-1644 butan-1,3-dione and dialkyl acetylenedicarboxylates in the presence of N- heterocycles Mohammad Bagheri*a,Safa Ali-Asgarib and Khalil Pourshamsianc a Department of Chemistry, Mahallat Branch, Islamic Azad University, Mahallat, Iran. b Department of Chemistry, Shahrood Branch, Islamic Azad University, Shahrood, Iran. c Department of Chemistry, Tonekabon Branch, Islamic Azad University, Tonekabon, Iran. H R'3N CO2R O O CO2R O H + R'3N + F3C S F3C CO2R S R' N 3 CO2R O R 3 1a isoquionoline 1b pyridine 2a Me 1c N-methylimidazole 2b Et R'3N R 10a isoquionoline Me 10b isoquionoline Et 4a pyridine Me 4b pyridine Et 12a N-methylimidazole Me 12b N-methylimidazole Et Catalyst free synthesis of new alfa-amino phosphonates by three component pp 1645-1647 reaction of diphenylphosphite, activated acetylenes and thiazole Anvar Mirzaei* and Chroo Hossaini Chemistry Department, Fculty of Science, Sanandaj Branch, Islamic Azad University, PO Box 618, Sanandaj, Iran. R CHR' R' O N N Toluene O + + PhO P H P S PhO reflux, 24 h S OPh R OPh 1 2 3 4 Ca(OH)2/CaO as a green catalyst for the synthesis of 3,4-dihydropyrimidin-2(1H)- pp 1649-1653 ones derivatives Ali Akbari* Department of Chemistry, Faculty of Science, University of Jiroft, Jiroft, P. O. Box 8767161167, Iran. O R CH3 O O H CH CO NH Ca(OH) / CaO 3 2 RCHO + + 2 H2N NH2 solvent - free, rt O H3C N O H OCH2CH3 1620 Glutamic acid catalyzed multicomponent synthesis of 1-amidoalkyl-2-naphthols pp 1655-1660 from amides, aromatic aldehydes and 2-naphthol in solvent-free conditions Khatereh Khandan-Barani* Department of Chemistry, Islamic Azad University, Zahedan Branch, P.O. Box 98135-978, Zahedan, Iran. Synthesis and antimicrobial evaluation of bis imidazolidinone assembled pp 1661-1668 dihydropyridine ethoxyphthalimide derivatives Bhawana Kherodiya, Prakash Prajapat, Monika Kumawat and Ganpat L. Talesara Synthetic Organic Chemistry Research Laboratory, Department of Chemistry, M.L. Sukhadia University, Udaipur- 313001 (Raj.), India. 1,3,4-Thiadiazole rings as π-spacers in triphenylamine based dyes: A density pp 1669-1678 functional theory study of reactivity, UV/Visible spectra, structural and optical properties Mehdi Nabati* Chemistry Department, Faculty of Science, Azarbaijan Shahid Madani University, Tabriz, Iran. 1621 .