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:O_louie2001@yahoo.com
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
synthesis new 3H-Indoles by fischer synthesis method
Authors: M.M.Baradarani *b, J.Khalafib, H.Vahedi a,A.H. Massoudi a , S.Sajjadifara,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: ss_sajjadifar@yahoo.com
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
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