خلاصه مقالات ارسالی به چهاردهمین کنگره شیمی آلی کشور - زابل

Title: A new theoretical model for assessment of molar mass  in  type  dendrimers

Authors: Massoudi.A.H, Vahedi.H, Louie.O , Sajjadifar.S

Address: Payame nour University .Mashad. Iran

E-Mail:[e-mail]

Abstract:

Dendrimers are architechral macromolecules with a lot of branches in three-dimensional and ordered structures. They have been prepared [1,2] via multistage reaction  in which  the  number of generations produced .The  number of generations are correspond to their  number of the rings . [4,3]

In this research the efficiency of   computational  molar mass  model of  the dendrimer with  alcoholic ,acidic ,amine and tert-Butyl acetate groups terminated in end branches were investigated. According  to our investigation a developed  model was obtained, in which  by the knowledge of molar masses of the core  ( ) and end branch groups ( ) and  number of  active sites in the  core ( ) ,molecular weight  of dendrimer  - type  was achieved .

Reference:

1-A.H.Massoudi,A. Maddahi.” Synthesis of [9]-10-[9] two – directional arborol for adhesion promoter in polymer - on – metal composites  ”Asian Journal of Chemistry .Vol.20,No1(2008),463-467

2. G.R.Newkome  ,Z.Yao, G.R.Baker,V.K.Gupta, ”Cascade Molecules: A New Approach to  micelles .A [27]- Arborol”  ,J.Org.Chem.1985,50,2003-2004

3. G.R.Newkome,C.N.Moorefield, M.J.Saunders,S.H.Grossman,”  Unimolecular      Micelles ”,Angew.Chem., Int.Ed.Engl.1991,30,1178-1180    

  4. G.R.Newkome,J.K.Young,G.R.Baker,R.L.Potter-“Cascade polymers-pH Dependence of Hydrodynamic radii of Acid – Terminated Dendrimers”. Macromolecules 1993-26-2394-2396

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synthesis new 3H-Indoles by fischer synthesis method

Authors: M.M.Baradarani ^*b, J.Khalafi^b, H.Vahedi ^a,A.H. Massoudi ^a , S.Sajjadifar^a,O.Louie ^b

a. Department of chemistry, University of Payame noor, Mashhad, Iran

b. Department of chemistry, Faculty of Science, University of Urmia, Urmia 57135, Iran

E-Mail: [e-mail]

Abstract:

Methylindolenines were prepared by fischer indole synthetic reaction of o,m-tolylhydrazinehydrochloride with methylisopropylketone and   2-methylcyclohexanone in acetic acid at room temperature in high yield.

o,p – Nitrophenylhydrazines were reacted with 2-methylcyclohexanone in acetic acid at reflux to give nitroindolenines , and the reaction of o,p – nitrophenylhydrazines with methylisopropylketone in acetic acid were not successful.

o,p – Nitrophenylhydrazines were reacted with methylisopropylketone in acetic acid , hydrochloric acid to give 2,3,3- trimethyl-5- nitro- indolenine and 2,3,3- trimethyl-7- nitro- indolenine

References:

1. Urech, E., Tagman, E., Helv. Chem. Acta, 36, 1809 (1953).
2. B.Robinson ; Chem. Rev. 1963, 63 , 37 and , 1969 , 69 , 227  .
3. G.M.Robinson and R.Robinson; J.Chem.Soc.,1918,113,639 and,1924 ,125,826  
4. R. E. Lyle and L. Skarlos ; Chem. Comm. , 1966 , 644 .
5. R. B. Carlin and E. E. Fischer ;  J. Am. Chem. Soc. , 1948 , 70 , 3421 .
6. L.F.Fieser and R.G.Kennely; J.Am.Chem.Soc.,57,1611 (1935).