VOLUME 3, NO1, MAR 1981

Synthesis and Characterization of Phenyl/4-pyridyl meso Substituted Porphyrins

The complete series of the six phenyl/4-pyridyl mego substituted porphyrins were synthesized and characterized by analysis. The PMR spectra were consistent with the assigned struc­tural representations. The new compounds, and othep that can be made by similar procedures, will be useful both for kinetic and energy related surfactant studies.read more

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A SHAMIM ,P HAMBRIGHT ,P WORTHINGTON ,

Some of New Derivatives of Strychnine

In the context of studies in the correlation of structure and activity, a number of­new derivatives of"str1chnine with substitution in the benzene ring have been prepared. NMR studies revealed that the ¢lc!ctrophi1ic substitution in strychnine takes place at C-2.read more

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A MALIK ,N AFZA ,

Isolation of Glucotropaeolin from Salvandora Persica L

Glucotropaeolin was isolated and identified from the roots of Salvadora Persica L.Benzyl isothiocyanate was separated by the enzymatic hydrolysis of the g1.ucosinolate. Benzyl nitrile was also detected in the hydrolysate. The presence of the latter compound further substantiates the possible formation of the isothiocyanate, thiocyanate or/and the nitrile derivatives from the thiazarine intermediate.read more

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M MEDHAT ,M S EL NASIR ,S T EZMIRLY ,

Synthesis in Biphenls. Part 1

A number of dinitroacetanilides have been converted into their N-nitrosoderivatives which on decomposition in benzene have afforded unusual biphenyls with two nitr~oups in ortho or para position to each other in one of the rings. The meachnism of their fonnation has been dis­cussed.read more

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M I QURSHI ,Y AHMAD ,

Quantative Analysis of Indole Compounds Via Electron Acceptor Complexes.

The formation of electron-donor acceptor complexes of some carbethoxy derivatives ofindoles with a strong electron acceptor 2,6-dicbloroquinone-4-cblorimide has been investigated quan­tatively by photometric method. This is rather a simple, less time consuming and accurate technique for routine analysis of the samples.read more

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A Q N MANZAR ,

The Composition and Stability of Co(ll), Ni(TI) and Cu(TI)-o-Carboxyphenyl Azodiethylrnalonate Complexes by pH metric Method in Mixed Solvents

8-carboxyphenyl azodiethylmalonate was studied pH-metricallY in different aqueous organic solvents. The pK1&pK2 were calculated to be 4.81 & 10.97,5.60 & 12.21 and 5.15 & 11.57 in 50% and 80% aqueous ethanol and 50% aqueous dioxan respectivily. The stability constants of Co(ll), Ni(II) and Cu(II) were also calculated in the same solvents. It was found that copper foms 1:2 complex in all mixed solvents, while nickel and cobalt fom 1: 1 complexes. There is a good relation between pK;S and dielectric constant of solvents. The pK&pK of ligand and complexes in water can be obtained graghically.read more

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B A EL SHETARY ,W H MAHMOUD ,M F EL SHAHAT ,

A New Approach to the Synthesis of N-Arylated Aromatic Amines- A Novel Carbazofe Synthesis**

A New Approach to the Synthesis of N-Arylated Aromatic Amines- A Novel Carbazofe Synthesis**read more

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A UR REHMAN ,S FIRDOUS ,

Nuclear Magnetic Resonance Study of 4-SubBtituted NN -Linked Bi(Heterocycles)

Nuclear Magnetic Resonance Study of 4-SubBtituted NN -Linked Bi(Heterocycles)read more

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A S AFRIDI ,

Isolation of Glanduloside, D-Mannitol and Hentriacontane from Anticharis Glandulosa Aschers

Isolation of Glandul08ide, D-Mannitol and Hentriacontane from Anticharis Glandulosa Aschers.read more

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L M KHATRI ,M A KAZI ,