Original Paper
1. Novel synthesis of Pyrimido[4,5- e] [1,3,4] thiadiazines

Abdolhassan Doulah

Volume 4, Issue 2 , Summer 2014, Pages 1-7

Abstract
  Treatment of 1-(5-bromo-2-chloro-6-methylpyrimidin-4-yl)-1-methylhydrazine with dimethylthiocarbamoylchloride gave 7-chloro-N,N,1,5-tetramethyl-1H-pyrimido[4,5-e][1,3,4]thiadiazin-3-amine in basic acetonitrile. The latter compounds were reacted with secondary amines in boiling ethanol to afford the related ...  Read More

Original Paper
2. Aminolysis of selected methylpyrimidines in protic solvents

Hossein Eshtiagh-Hosseini; Masoud Mirzaei

Volume 4, Issue 2 , Summer 2014, Pages 8-15

Abstract
  Crystallographic data analyses indicate that three types of prolinium cations, along with two types of hydrogen bonding, produce and stabilize the helical structure of triprolinium 12-phosphomolybdate. There are similarities between this organic-inorganic compound and peptides/proteins. The stronger ...  Read More

Original Paper
3. arylaminotetrazoles : via [2+3] cycloaddition of nitriles and sodium azide via solid acid catalysis

Abbas Teimouri; Alireza Najafi Chermahini

Volume 4, Issue 2 , Summer 2014, Pages 15-24

Abstract
  The [3+2] cycloaddition between various nitriles and sodium azide proceeds smoothly in the presence of zeolite and sulfated Zircona as effective catalyst and in the water and DMF/MeOH, to give the corresponding arylaminotetrazoles in good to high yields. The reaction most probably precedes through the ...  Read More

Original Paper
4. conformational properties and the anomeric effect study of phosphinanes

Javad Azizian; Mahdieh Entezari; Hossein Anaraki Ardakani; Shahab Zomorodbakhsh

Volume 4, Issue 2 , Summer 2014, Pages 25-32

Abstract
  Ab initio HF/6-31G* Methode was employed to calculate the bond length in 2- phosphinanes when electronegative groups was at C-2 tend axial and equatorial positions. The magnitude of the anomeric effect depends on the nature of the substituent, the effect of the substituent can be seen by comparing the ...  Read More

Original Paper
5. preparation of 3, 4-dihydropyrimidin-2(1H)-ones using quaternary ammonium- treated clay in water

Soheil Sayyahi; Sedigheh Jahanbakhshi; Zahra Dehghani

Volume 4, Issue 2 , Summer 2014, Pages 33-42

Abstract
  In this study, a variety of 3, 4-dihydropyrimidin-2(1H)-ones derivatives were synthesized via three-component Biginelli reaction. The quaternary ammonium- treated clay -catalyzed process proved to be simple, efficient, and environmentally friendly.  Read More