Original Paper
1. Synthesis and characterization of Nanoparticles Poly Ethylene Imine-Functionalized MCM-41by Covalent Anchoring as a Solid Catalyst for Multi-Component Reactions

Hosein Hamadi; Maryam Gholami; Mehdi Khoobi

Volume 1, Issue 4 , Spring 2011, Pages 1-10

Abstract
  A novel magnetically immobilized polyethyleneimine (PEI) fabricated by covalently anchoring on MCM-41 (MCM-41@PEI) was prepared. The synthesized catalyst was characterized by Fourier transform infrared (FT-IR), thermogravimetric analysis (TGA), X-ray powder diffraction (XRD), scanning electron microscopy ...  Read More

Original Paper
2. Synthesis of imidazo[2,1-b]thiazole-3-carboxylate through the reaction of thiohydantoins and ethylbromopyruvate

Nasimeh Zarei; Mohammad Mehdi Ghanbari; Marzieh Jamali; Mahboobeh Kiamarsi; Pegah Mohagheghzadeh

Volume 1, Issue 4 , Spring 2011, Pages 11-14

Abstract
  Imidazo[2,1-b]thiazoles are obtaind in excellent yields from the addition reaction between thiohydantoin and ethylbromopyruvate.  These imidazo[2,1-b]thiazoles in the presence of p-TSA in boiling toluene refluxed for 2.5 hours led to imidazo[2,1-b]thiazole-3-carboxylates in elimination reactions  Read More

Original Paper
3. Synthesis of Novel imidazo[2,1-b]thiazoles from thiohydantoins and Diethyl oxalate

Mahboobeh Kiamarsi; Mohammad Mehdi Ghanbari; Marzieh Jamali; Nasimeh Zarei; Yalda Shaabani

Volume 1, Issue 4 , Spring 2011, Pages 15-17

Abstract
  Novel imidazo[2,1-b]thiazoles were synthesized in good yield via a mild reaction of thiophenytoin and diethyl oxalatein the presence of 10% mol p-TSA.  Read More

Original Paper
4. An efficient method for the preparation of symmetrical disulfides using 1-butyl- 3-methylimidazolium hydroxide in aqueous medium

Somayeh Shagholi; Soheil Sayyahi

Volume 1, Issue 4 , Spring 2011, Pages 15-21

Abstract
  In this study, a one-pot and efficient method is reported for the synthesis of symmetrical disulfides from alkyl halides in the present of sulfur and 1-butyl-3-methylimidazolium hydroxide as a basic reagent and phase transfer catalyst. The reaction proceeded very fast and afforded the desired products ...  Read More

Original Paper
5. Triphenylphosphine mediated synthesis of functionalized aryl-vinyl ethers from7-hydroxy coumarin and methyl acetylene carboxylate

Delaram Abdolahi; Bita Mohtat

Volume 1, Issue 4 , Spring 2011, Pages 22-24

Abstract
  7-hydroxy coumarin undergoes neutral conditions with alkyl propiolates in the presence of triphenylphosphine, and bysubstituation the corresponding aryl vinyl ethers was obtained in good yields  Read More

Original Paper
6. Persian Gulf Marine Sponge/I2: An efficient natural catalyst for quinoline synthesis

Fereshteh farrokhi nejad; Mohammad Reza Shushizadeh

Volume 1, Issue 4 , Spring 2011, Pages 25-37

Abstract
  A natural and efficient method has been developed for the synthesis of quinoline derivatives in good-to-high yields, from various aryl aldehydes, amines and phenyl acethylene, using marine sponge/I2 as a green catalyst  Read More

Original Paper
7. The inhibition effects of melon on mushroom tyrosinase activity

Azadeh Taherian; Alireza Jahangiri; Forogh Namjoyan

Volume 1, Issue 4 , Spring 2011, Pages 38-42

Abstract
  The  inhibition effects seed and peel of melon on diphenolase activity of mashroom tyrosinase were investigated. The IC50 values and Ki values of seed and peel of melon were evaluated. increased the Km value and decreased the Vm value so it show mixed type inhibition on mushroom tyrosinase when ...  Read More

Original Paper
8. An Efficient Synthesis of Vinylphosphonates from Alkyl Cyanoformates, Activated Acetylenes, and Trialkyl Phosphites

Tayebeh Sanaeishoar; Tahereh Shojaee; Parvaneh Shabankareh; Mina Bashirpour

Volume 1, Issue 4 , Spring 2011, Pages 43-49

Abstract
  An efficient synthesis of vinylphosphonates is described. This involves the reaction of alkyl cyanoformates and dialkyl acetylendicarboxylates in the presence of trialkyl phosphites. The 1H, 13C NMR, and 31P NMR spectra of vinylphosphonates having different substitution are consistent with the presence ...  Read More